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Strain relief for electrical cord on old appliance?
We have a very old appliance that has an electrical cord with no
strain relief. The cord comes out of a square hole in the back. I have replaced the original cord with one that it more heavy-duty, but it still eventually shorts out. I'm going to go get a piece of stiff tubing about 1" long that will fit into the hole and run the cord through that. Is there a better idea? |
Strain relief for electrical cord on old appliance?
On 2/8/2011 1:25 AM, Prof Wonmug wrote:
We have a very old appliance that has an electrical cord with no strain relief. The cord comes out of a square hole in the back. I have replaced the original cord with one that it more heavy-duty, but it still eventually shorts out. I'm going to go get a piece of stiff tubing about 1" long that will fit into the hole and run the cord through that. Is there a better idea? There are commercially available strain reliefs which can be found on the Internet, depending on the cord size, the cut-out hole size, and the shape of the cut-out. See, as a single example: http://www.parts-express.com/wizards...gag=2243855113 A Google search will yield many other options. The approach you are using with tubing may work perfectly well. Another approach is to use some RTV / silicone caulk to fill the void, essentially building your own custom gasket. This would be particularly useful if the cut-out hole is a "D" shape or some other irregular cut-out. |
Strain relief for electrical cord on old appliance?
The early plugs were designed to be used with an "Underwriter's Knot"
for strain relief. Here is a link to a pictu http://www.robertacory.com/RobertaCo...es/Page412.htm Handy to know... /paul W3FIS |
Strain relief for electrical cord on old appliance?
Go to the electrical section of your local hardware, and ask
for a "Romex connector". Should look like this. http://www.electrical-forensics.com/...e-1b-Large.jpg You'll have to enlarge the hole in the back of the appliance, but it will save you labor in the long run, not replacing the cord. And much safer. Any electrician should have them, and will probably give you one free, if you ask politely. He may also have the necessary punch, to enlarge the hole in back of your appliance. -- Christopher A. Young Learn more about Jesus www.lds.org .. "Prof Wonmug" wrote in message ... We have a very old appliance that has an electrical cord with no strain relief. The cord comes out of a square hole in the back. I have replaced the original cord with one that it more heavy-duty, but it still eventually shorts out. I'm going to go get a piece of stiff tubing about 1" long that will fit into the hole and run the cord through that. Is there a better idea? |
Strain relief for electrical cord on old appliance?
Will an Underwriters Knot help keep the metal case from
wearing through the insullation and shorting out the wires? Methinks thou hast misunderstood the question. -- Christopher A. Young Learn more about Jesus www.lds.org .. "deadgoose" wrote in message ... The early plugs were designed to be used with an "Underwriter's Knot" for strain relief. Here is a link to a pictu http://www.robertacory.com/RobertaCo...es/Page412.htm Handy to know... /paul W3FIS |
Strain relief for electrical cord on old appliance?
On 2/8/2011 7:25 AM, deadgoose wrote:
The early plugs were designed to be used with an "Underwriter's Knot" for strain relief. Here is a link to a pictu http://www.robertacory.com/RobertaCo...es/Page412.htm Handy to know... /paul W3FIS I've seen reproduction electrical items from a company that copies old fixtures for interior decorating and the cost of the reproduction cloth covered cords is outrageous. Of course, I would expect the new reproduction wire to be superior to the old cloth and rubber but DANG! TDD |
Strain relief for electrical cord on old appliance?
On 2/8/2011 12:25 AM, Prof Wonmug wrote:
We have a very old appliance that has an electrical cord with no strain relief. The cord comes out of a square hole in the back. I have replaced the original cord with one that it more heavy-duty, but it still eventually shorts out. I'm going to go get a piece of stiff tubing about 1" long that will fit into the hole and run the cord through that. Is there a better idea? Smarty posted a link to something that was probably the original type strain relief. The part snaps into a squared off hole that usually rounded at the top and bottom. The flat lamp cord lays in it and the retainer pushes the cable down into the housing which then snaps into the hole. It's easily done with slip joint pliers. You may find the strain reliefs in the parts drawers in the electrical aisle at Home Depot or in plastic bags hanging with other small electrical parts there. TDD |
Strain relief for electrical cord on old appliance?
On Tue, 08 Feb 2011 02:47:10 -0500, Smarty wrote:
On 2/8/2011 1:25 AM, Prof Wonmug wrote: We have a very old appliance that has an electrical cord with no strain relief. The cord comes out of a square hole in the back. I have replaced the original cord with one that it more heavy-duty, but it still eventually shorts out. I'm going to go get a piece of stiff tubing about 1" long that will fit into the hole and run the cord through that. Is there a better idea? There are commercially available strain reliefs which can be found on the Internet, depending on the cord size, the cut-out hole size, and the shape of the cut-out. See, as a single example: http://www.parts-express.com/wizards...gag=2243855113 When I did a search, the results were all way too big, like these: http://www.alliedelec.com/search/pro...px?SKU=2330976 http://www.grainger.com/Grainger/str...ecatalog/N-8fq http://www.drillspot.com/products/43...ight_Mesh_Grip The opening in the housing is just barely larger than the cord and had no fitting whatsoever right now. That's why I was thinking rubber tubing that I could squeeze into the opening. |
Strain relief for electrical cord on old appliance?
On Tue, 8 Feb 2011 05:25:19 -0800 (PST), deadgoose
wrote: The early plugs were designed to be used with an "Underwriter's Knot" for strain relief. Here is a link to a pictu http://www.robertacory.com/RobertaCo...es/Page412.htm Handy to know... Yes, that's very handy to know. In this case, the strain is not inside where it connects, it's right at the opening. The cord gets bent back and forth and over time the wires inside break, causing a short. I long ago replaced the bare wires wrapped around the screws with crimp terminals, so that's working great. Also, there isn't room inside there for a knot, but this is a nice trick that I'll file away somewhere for future use. |
Strain relief for electrical cord on old appliance?
On Tue, 8 Feb 2011 08:30:56 -0500, "Stormin Mormon"
wrote: Will an Underwriters Knot help keep the metal case from wearing through the insullation and shorting out the wires? Methinks thou hast misunderstood the question. I also didn't say anything about the case wearing through the insulation. Methinks thou hast spent too much time reading your Book of Moron and not enough reading posts carefully. |
Strain relief for electrical cord on old appliance?
On Tue, 08 Feb 2011 07:44:37 -0600, The Daring Dufas
wrote: On 2/8/2011 12:25 AM, Prof Wonmug wrote: We have a very old appliance that has an electrical cord with no strain relief. The cord comes out of a square hole in the back. I have replaced the original cord with one that it more heavy-duty, but it still eventually shorts out. I'm going to go get a piece of stiff tubing about 1" long that will fit into the hole and run the cord through that. Is there a better idea? Smarty posted a link to something that was probably the original type strain relief. The part snaps into a squared off hole that usually rounded at the top and bottom. The flat lamp cord lays in it and the retainer pushes the cable down into the housing which then snaps into the hole. It's easily done with slip joint pliers. You may find the strain reliefs in the parts drawers in the electrical aisle at Home Depot or in plastic bags hanging with other small electrical parts there. I'm going to stop by The Borg later today and see what they have. The opening is very tight. I don't think any of the metal or hard plastic ones will work. I tried a Bing search which turned up some nylon versions, which might work if they come small enough: http://www.connex-electronics.com/?u..._pgnpt_p5.html http://www.connex-electronics.com/?u...edbody_p8.html They also look nicer. Then I found these from Heyco, a company that specializes in wire protection, which look to be exactly what I need: http://www.heyco.com/products/sec_03/3-06-2b.html http://www.heyco.com/products/sec_03/3-17a.html Not finding a shopping cart, I called to inquire and was directed to the Sample Request page, where I was able to request 2-3 samples. Very cool. |
Strain relief for electrical cord on old appliance?
On Feb 8, 8:29*am, "Stormin Mormon"
wrote: Go to the electrical section of your local hardware, and ask for a "Romex connector". Should look like this. * *http://www.electrical-forensics.com/...er-MyHome-1b-L... You'll have to enlarge the hole in the back of the appliance, but it will save you labor in the long run, not replacing the cord. And much safer. Any electrician should have them, and will probably give you one free, if you ask politely. He may also have the necessary punch, to enlarge the hole in back of your appliance. -- Christopher A. Young Learn more about Jesus *www.lds.org . "Prof Wonmug" wrote in message ... We have a very old appliance that has an electrical cord with no strain relief. The cord comes out of a square hole in the back. I have replaced the original cord with one that it more heavy-duty, but it still eventually shorts out. I'm going to go get a piece of stiff tubing about 1" long that will fit into the hole and run the cord through that. Is there a better idea? Automotive stores offer a wide range of rubber plugs and grommets that may be useful. When I need one I tend to be more interested in finding a plug that will fit because I can always make a hole in it. Use these with the Underwriter's knot Jimmie |
Strain relief for electrical cord on old appliance?
On Feb 8, 8:29*am, "Stormin Mormon"
wrote: Go to the electrical section of your local hardware, and ask for a "Romex connector". Should look like this. * *http://www.electrical-forensics.com/...er-MyHome-1b-L... You'll have to enlarge the hole in the back of the appliance, but it will save you labor in the long run, not replacing the cord. And much safer. Any electrician should have them, and will probably give you one free, if you ask politely. He may also have the necessary punch, to enlarge the hole in back of your appliance. -- Christopher A. Young Learn more about Jesus *www.lds.org . "Prof Wonmug" wrote in message ... We have a very old appliance that has an electrical cord with no strain relief. The cord comes out of a square hole in the back. I have replaced the original cord with one that it more heavy-duty, but it still eventually shorts out. I'm going to go get a piece of stiff tubing about 1" long that will fit into the hole and run the cord through that. Is there a better idea? |
Strain relief for electrical cord on old appliance?
On 2/8/2011 8:25 AM, deadgoose wrote:
The early plugs were designed to be used with an "Underwriter's Knot" for strain relief. Here is a link to a pictu http://www.robertacory.com/RobertaCo...es/Page412.htm Handy to know... /paul W3FIS That picture is bothering me. Put more of the dang wire under the screws!!!!!!!!!!! |
Strain relief for electrical cord on old appliance?
Prof Wonmug wrote:
We have a very old appliance that has an electrical cord with no strain relief. The cord comes out of a square hole in the back. I have replaced the original cord with one that it more heavy-duty, but it still eventually shorts out. I'm going to go get a piece of stiff tubing about 1" long that will fit into the hole and run the cord through that. Is there a better idea? There is a thing called 'black electrical tape'. Wrap the cord so that it fits tight in the hole. A knot in the inside will also provide strain relief. Or buy a plastic cord clamp that fits the hole. |
Strain relief for electrical cord on old appliance?
On Feb 8, 1:25*am, Prof Wonmug wrote:
We have a very old appliance that has an electrical cord with no strain relief. The cord comes out of a square hole in the back. I have replaced the original cord with one that it more heavy-duty, but it still eventually shorts out. I'm going to go get a piece of stiff tubing about 1" long that will fit into the hole and run the cord through that. Is there a better idea? A strain relief is also suppose to reduce the amount of travel the cord bends at any point. Some "strain reliefs" do NOT do this. I often use multiple heat shrinking on cords. Using a piece of tubing is also good. I use a Tywrap to secure, and often use hot melt glue to stabilize. greg |
Strain relief for electrical cord on old appliance?
On Tue, 08 Feb 2011 12:51:44 -0500, LSMFT wrote:
Prof Wonmug wrote: We have a very old appliance that has an electrical cord with no strain relief. The cord comes out of a square hole in the back. I have replaced the original cord with one that it more heavy-duty, but it still eventually shorts out. I'm going to go get a piece of stiff tubing about 1" long that will fit into the hole and run the cord through that. Is there a better idea? There is a thing called 'black electrical tape'. Wrap the cord so that it fits tight in the hole. A knot in the inside will also provide strain relief. Or buy a plastic cord clamp that fits the hole. Electrical tape is a good idea if I can't find a grommet that will fit. Thanks. |
Strain relief for electrical cord on old appliance?
"Prof Wonmug" wrote in message ... We have a very old appliance that has an electrical cord with no strain relief. The cord comes out of a square hole in the back. I have replaced the original cord with one that it more heavy-duty, but it still eventually shorts out. I'm going to go get a piece of stiff tubing about 1" long that will fit into the hole and run the cord through that. Is there a better idea? PW What I use is a coiled spring slide over cord and then twisted into the opening. The spring is the compression type. This allows the cord to bend in a larger radius sort of like the cords on a clothes iron. WW |
Strain relief for electrical cord on old appliance?
You said "it still shorts out". So, tell me. Aside from the
metal cutting the wire and making connection between, how would it "still short out"? Please describe one of the "shorts out" and tell us all how that happens? -- Christopher A. Young Learn more about Jesus www.lds.org .. "Prof Wonmug" wrote in message ... On Tue, 8 Feb 2011 08:30:56 -0500, "Stormin Mormon" wrote: Will an Underwriters Knot help keep the metal case from wearing through the insullation and shorting out the wires? Methinks thou hast misunderstood the question. I also didn't say anything about the case wearing through the insulation. Methinks thou hast spent too much time reading your Book of Moron and not enough reading posts carefully. |
Strain relief for electrical cord on old appliance?
Prof Wonmug wonmug moo.gov wrote:
We have a very old appliance that has an electrical cord with no strain relief. The cord comes out of a square hole in the back. I have replaced the original cord with one that it more heavy-duty, but it still eventually shorts out. I'm going to go get a piece of stiff tubing about 1" long that will fit into the hole and run the cord through that. Is there a better idea? If you're good with hot melt glue, you can make strain relief for plugs with that. As always, clean the parts and make sure they get very hot. |
Strain relief for electrical cord on old appliance?
On 2/8/2011 10:41 AM, Prof Wonmug wrote:
On Tue, 08 Feb 2011 07:44:37 -0600, The Daring Dufas wrote: On 2/8/2011 12:25 AM, Prof Wonmug wrote: We have a very old appliance that has an electrical cord with no strain relief. The cord comes out of a square hole in the back. I have replaced the original cord with one that it more heavy-duty, but it still eventually shorts out. I'm going to go get a piece of stiff tubing about 1" long that will fit into the hole and run the cord through that. Is there a better idea? Smarty posted a link to something that was probably the original type strain relief. The part snaps into a squared off hole that usually rounded at the top and bottom. The flat lamp cord lays in it and the retainer pushes the cable down into the housing which then snaps into the hole. It's easily done with slip joint pliers. You may find the strain reliefs in the parts drawers in the electrical aisle at Home Depot or in plastic bags hanging with other small electrical parts there. I'm going to stop by The Borg later today and see what they have. The opening is very tight. I don't think any of the metal or hard plastic ones will work. I tried a Bing search which turned up some nylon versions, which might work if they come small enough: http://www.connex-electronics.com/?u..._pgnpt_p5.html http://www.connex-electronics.com/?u...edbody_p8.html They also look nicer. Then I found these from Heyco, a company that specializes in wire protection, which look to be exactly what I need: http://www.heyco.com/products/sec_03/3-06-2b.html http://www.heyco.com/products/sec_03/3-17a.html Not finding a shopping cart, I called to inquire and was directed to the Sample Request page, where I was able to request 2-3 samples. Very cool. OK that one is better because it's the same bushing Smarty and me are referring to but it has the tail which keeps the wire from bending at a sharp angle. I used to repair a lot of CB radios and I had a stock of fine wire springs that I slid over the microphone cable and hooked a bent out section to crimp to the connector to keep the cable from being bent at a sharp angle which would break the wires inside. TDD |
Strain relief for electrical cord on old appliance?
On 08 Feb 2011 19:51:26 GMT, John Doe wrote:
Prof Wonmug wonmug moo.gov wrote: We have a very old appliance that has an electrical cord with no strain relief. The cord comes out of a square hole in the back. I have replaced the original cord with one that it more heavy-duty, but it still eventually shorts out. I'm going to go get a piece of stiff tubing about 1" long that will fit into the hole and run the cord through that. Is there a better idea? If you're good with hot melt glue, you can make strain relief for plugs with that. As always, clean the parts and make sure they get very hot. That's beyond my skill level. ;-) |
Strain relief for electrical cord on old appliance?
In article ,
Prof Wonmug wrote: We have a very old appliance that has an electrical cord with no strain relief. The cord comes out of a square hole in the back. I have replaced the original cord with one that it more heavy-duty, but it still eventually shorts out. I'm going to go get a piece of stiff tubing about 1" long that will fit into the hole and run the cord through that. Is there a better idea? There are hundreds of different sizes and configurations of strain reliefs, and you may or may not get lucky in finding one that matches the original closely enough to be serviceable. Put a wire tie on the wire to keep it from pulling through the hole and go back to watching TV. |
Strain relief for electrical cord on old appliance?
On 2/8/2011 10:58 AM, Prof Wonmug wrote:
On Tue, 08 Feb 2011 02:47:10 -0500, wrote: On 2/8/2011 1:25 AM, Prof Wonmug wrote: We have a very old appliance that has an electrical cord with no strain relief. The cord comes out of a square hole in the back. I have replaced the original cord with one that it more heavy-duty, but it still eventually shorts out. I'm going to go get a piece of stiff tubing about 1" long that will fit into the hole and run the cord through that. Is there a better idea? There are commercially available strain reliefs which can be found on the Internet, depending on the cord size, the cut-out hole size, and the shape of the cut-out. See, as a single example: http://www.parts-express.com/wizards...gag=2243855113 When I did a search, the results were all way too big, like these: http://www.alliedelec.com/search/pro...px?SKU=2330976 http://www.grainger.com/Grainger/str...ecatalog/N-8fq http://www.drillspot.com/products/43...ight_Mesh_Grip The opening in the housing is just barely larger than the cord and had no fitting whatsoever right now. That's why I was thinking rubber tubing that I could squeeze into the opening. Then the rubber tubing sounds like the better solution. Your original post / question did not make any reference to "barely larger", which is why I originally offered the possibility of a commercial strain relief or RTV. |
Strain relief for electrical cord on old appliance?
On Feb 8, 1:25*am, Prof Wonmug wrote:
We have a very old appliance that has an electrical cord with no strain relief. The cord comes out of a square hole in the back. I have replaced the original cord with one that it more heavy-duty, but it still eventually shorts out. I'm going to go get a piece of stiff tubing about 1" long that will fit into the hole and run the cord through that. Is there a better idea? So rather than tell people this idea won't fit or that idea won't work because you don't know how to work with that kind of material -- why not post some pictures of the appliance in question... At least one showing the cord where it exits the outside of the case and if you wanted SUPER advice, probably one of the inside of that point of the machine as well so that people can actually give you specific gizmos you could use to solve your problem... ~~ Evan |
Strain relief for electrical cord on old appliance?
On Tue, 08 Feb 2011 21:51:55 -0500, Smarty wrote:
On 2/8/2011 10:58 AM, Prof Wonmug wrote: On Tue, 08 Feb 2011 02:47:10 -0500, wrote: On 2/8/2011 1:25 AM, Prof Wonmug wrote: We have a very old appliance that has an electrical cord with no strain relief. The cord comes out of a square hole in the back. I have replaced the original cord with one that it more heavy-duty, but it still eventually shorts out. I'm going to go get a piece of stiff tubing about 1" long that will fit into the hole and run the cord through that. Is there a better idea? There are commercially available strain reliefs which can be found on the Internet, depending on the cord size, the cut-out hole size, and the shape of the cut-out. See, as a single example: http://www.parts-express.com/wizards...gag=2243855113 When I did a search, the results were all way too big, like these: http://www.alliedelec.com/search/pro...px?SKU=2330976 http://www.grainger.com/Grainger/str...ecatalog/N-8fq http://www.drillspot.com/products/43...ight_Mesh_Grip The opening in the housing is just barely larger than the cord and had no fitting whatsoever right now. That's why I was thinking rubber tubing that I could squeeze into the opening. Then the rubber tubing sounds like the better solution. Your original post / question did not make any reference to "barely larger", which is why I originally offered the possibility of a commercial strain relief or RTV. Yeah, I know. I never know how much information to include. I suppose I could have uploaded a photo and saved 1,000 words. ;-) I just heard from Heyco that the strain relief bushings shipped today. We'll see. |
Strain relief for electrical cord on old appliance?
On Tue, 08 Feb 2011 18:49:40 -0800, Smitty Two
wrote: In article , Prof Wonmug wrote: We have a very old appliance that has an electrical cord with no strain relief. The cord comes out of a square hole in the back. I have replaced the original cord with one that it more heavy-duty, but it still eventually shorts out. I'm going to go get a piece of stiff tubing about 1" long that will fit into the hole and run the cord through that. Is there a better idea? There are hundreds of different sizes and configurations of strain reliefs, and you may or may not get lucky in finding one that matches the original closely enough to be serviceable. Put a wire tie on the wire to keep it from pulling through the hole and go back to watching TV. It's not that it pulls through the hole. I didn't make that clear. The copper wire inside the code eventually breaks from the bending back and forth just beyond the housing. I think I've found a solution from Heyco.com. |
Strain relief for electrical cord on old appliance?
On Tue, 8 Feb 2011 19:41:59 -0800 (PST), Evan
wrote: On Feb 8, 1:25*am, Prof Wonmug wrote: We have a very old appliance that has an electrical cord with no strain relief. The cord comes out of a square hole in the back. I have replaced the original cord with one that it more heavy-duty, but it still eventually shorts out. I'm going to go get a piece of stiff tubing about 1" long that will fit into the hole and run the cord through that. Is there a better idea? So rather than tell people this idea won't fit or that idea won't work because you don't know how to work with that kind of material -- why not post some pictures of the appliance in question... At least one showing the cord where it exits the outside of the case and if you wanted SUPER advice, probably one of the inside of that point of the machine as well so that people can actually give you specific gizmos you could use to solve your problem... Yup. I should have done that. I thought this was a simple question, so I didn't bother. Also, the last time I posted a photo, I used a photo-sharing site and a couple of people complained that the link caused problems for their browser. Anyway, I think I have a solution. Thanks. |
Strain relief for electrical cord on old appliance?
So, one of these days. You should tell us some more
information about the wire shorting out. How did it short out, aside from the case wearing through the insulation? -- Christopher A. Young Learn more about Jesus www.lds.org .. "Prof Wonmug" wrote in message ... It's not that it pulls through the hole. I didn't make that clear. The copper wire inside the code eventually breaks from the bending back and forth just beyond the housing. I think I've found a solution from Heyco.com. |
Strain relief for electrical cord on old appliance?
On 2/8/2011 8:33 AM, The Daring Dufas wrote:
On 2/8/2011 7:25 AM, deadgoose wrote: The early plugs were designed to be used with an "Underwriter's Knot" for strain relief. Here is a link to a pictu http://www.robertacory.com/RobertaCo...es/Page412.htm Handy to know... /paul W3FIS I've seen reproduction electrical items from a company that copies old fixtures for interior decorating and the cost of the reproduction cloth covered cords is outrageous. Of course, I would expect the new reproduction wire to be superior to the old cloth and rubber but DANG! TDD I used to deal a lot with "Antique Electronics Supply" before they were bought out and went wild with their prices. (about 20? years ago) I did a search and this place looks very competitive with a great selection! http://www.sundialwire.com/clothcoveredwire-1.aspx |
Strain relief for electrical cord on old appliance?
On 2/8/2011 11:41 AM, Prof Wonmug wrote:
On Tue, 08 Feb 2011 07:44:37 -0600, The Daring Dufas wrote: On 2/8/2011 12:25 AM, Prof Wonmug wrote: We have a very old appliance that has an electrical cord with no strain relief. The cord comes out of a square hole in the back. I have replaced the original cord with one that it more heavy-duty, but it still eventually shorts out. I'm going to go get a piece of stiff tubing about 1" long that will fit into the hole and run the cord through that. Is there a better idea? Smarty posted a link to something that was probably the original type strain relief. The part snaps into a squared off hole that usually rounded at the top and bottom. The flat lamp cord lays in it and the retainer pushes the cable down into the housing which then snaps into the hole. It's easily done with slip joint pliers. You may find the strain reliefs in the parts drawers in the electrical aisle at Home Depot or in plastic bags hanging with other small electrical parts there. I'm going to stop by The Borg later today and see what they have. The opening is very tight. I don't think any of the metal or hard plastic ones will work. I tried a Bing search which turned up some nylon versions, which might work if they come small enough: http://www.connex-electronics.com/?u..._pgnpt_p5.html http://www.connex-electronics.com/?u...edbody_p8.html They also look nicer. Then I found these from Heyco, a company that specializes in wire protection, which look to be exactly what I need: http://www.heyco.com/products/sec_03/3-06-2b.html http://www.heyco.com/products/sec_03/3-17a.html Not finding a shopping cart, I called to inquire and was directed to the Sample Request page, where I was able to request 2-3 samples. Very cool. Not pretty, but in a pinch I've wrapped a 2" section of cord with electrical tape fat enough so it just fits through the hole, then put a cable tie on each side to hold it in place. It's cheap and fast. And yes someone will probably tell me it's dangerous or not code but it's a hell of a lot better than what he has now. |
Strain relief for electrical cord on old appliance?
On Feb 9, 1:21*am, Prof Wonmug wrote:
On Tue, 08 Feb 2011 18:49:40 -0800, Smitty Two wrote: In article , Prof Wonmug wrote: We have a very old appliance that has an electrical cord with no strain relief. The cord comes out of a square hole in the back. I have replaced the original cord with one that it more heavy-duty, but it still eventually shorts out. I'm going to go get a piece of stiff tubing about 1" long that will fit into the hole and run the cord through that. Is there a better idea? There are hundreds of different sizes and configurations of strain reliefs, and you may or may not get lucky in finding one that matches the original closely enough to be serviceable. Put a wire tie on the wire to keep it from pulling through the hole and go back to watching TV.. It's not that it pulls through the hole. I didn't make that clear. The copper wire inside the code eventually breaks from the bending back and forth just beyond the housing. I think I've found a solution from Heyco.com. "The copper wire inside the code eventually breaks from the bending back and forth just beyond the housing. " I'll assume you meant inside the "cord" not "code". Tells us how that causes a short. Broken wires usually cause an open. |
Strain relief for electrical cord on old appliance?
I've also asked the same question. He says the wire shorts,
but says the case doesn't wear through the insullation. -- Christopher A. Young Learn more about Jesus www.lds.org .. "DerbyDad03" wrote in message ... Tells us how that causes a short. Broken wires usually cause an open. |
Strain relief for electrical cord on old appliance?
On 2/9/2011 3:27 PM, Tony Miklos wrote:
On 2/8/2011 8:33 AM, The Daring Dufas wrote: On 2/8/2011 7:25 AM, deadgoose wrote: The early plugs were designed to be used with an "Underwriter's Knot" for strain relief. Here is a link to a pictu http://www.robertacory.com/RobertaCo...es/Page412.htm Handy to know... /paul W3FIS I've seen reproduction electrical items from a company that copies old fixtures for interior decorating and the cost of the reproduction cloth covered cords is outrageous. Of course, I would expect the new reproduction wire to be superior to the old cloth and rubber but DANG! TDD I used to deal a lot with "Antique Electronics Supply" before they were bought out and went wild with their prices. (about 20? years ago) I did a search and this place looks very competitive with a great selection! http://www.sundialwire.com/clothcoveredwire-1.aspx COOL! Thanks for that link. I made a new bookmark category "Electrical, Vintage & Reproduction" There are lots of folks who have old items they want repaired/restored who have the money to pay for it. :-) I can't imagine the cost of wiring a theme restaurant or bar with knob and tube wiring. It would be a very interesting undertaking(no pun). :-) TDD |
Strain relief for electrical cord on old appliance?
On 02/09/2011 09:25 PM, The Daring Dufas wrote:
On 2/9/2011 3:27 PM, Tony Miklos wrote: On 2/8/2011 8:33 AM, The Daring Dufas wrote: On 2/8/2011 7:25 AM, deadgoose wrote: The early plugs were designed to be used with an "Underwriter's Knot" for strain relief. Here is a link to a pictu http://www.robertacory.com/RobertaCo...es/Page412.htm Handy to know... /paul W3FIS I've seen reproduction electrical items from a company that copies old fixtures for interior decorating and the cost of the reproduction cloth covered cords is outrageous. Of course, I would expect the new reproduction wire to be superior to the old cloth and rubber but DANG! TDD I used to deal a lot with "Antique Electronics Supply" before they were bought out and went wild with their prices. (about 20? years ago) I did a search and this place looks very competitive with a great selection! http://www.sundialwire.com/clothcoveredwire-1.aspx COOL! Thanks for that link. I made a new bookmark category "Electrical, Vintage & Reproduction" There are lots of folks who have old items they want repaired/restored who have the money to pay for it. :-) I can't imagine the cost of wiring a theme restaurant or bar with knob and tube wiring. It would be a very interesting undertaking(no pun). :-) TDD I don't think that it would pass inspection today. but I have found while looking for other old stuff that the old pushbutton light switches and switch plates are being reproduced... I remember those from my grandparents' house and always thought they were kind of cool. nate -- replace "roosters" with "cox" to reply. http://members.cox.net/njnagel |
Strain relief for electrical cord on old appliance?
On 2/9/2011 8:29 PM, Nate Nagel wrote:
On 02/09/2011 09:25 PM, The Daring Dufas wrote: On 2/9/2011 3:27 PM, Tony Miklos wrote: On 2/8/2011 8:33 AM, The Daring Dufas wrote: On 2/8/2011 7:25 AM, deadgoose wrote: The early plugs were designed to be used with an "Underwriter's Knot" for strain relief. Here is a link to a pictu http://www.robertacory.com/RobertaCo...es/Page412.htm Handy to know... /paul W3FIS I've seen reproduction electrical items from a company that copies old fixtures for interior decorating and the cost of the reproduction cloth covered cords is outrageous. Of course, I would expect the new reproduction wire to be superior to the old cloth and rubber but DANG! TDD I used to deal a lot with "Antique Electronics Supply" before they were bought out and went wild with their prices. (about 20? years ago) I did a search and this place looks very competitive with a great selection! http://www.sundialwire.com/clothcoveredwire-1.aspx COOL! Thanks for that link. I made a new bookmark category "Electrical, Vintage & Reproduction" There are lots of folks who have old items they want repaired/restored who have the money to pay for it. :-) I can't imagine the cost of wiring a theme restaurant or bar with knob and tube wiring. It would be a very interesting undertaking(no pun). :-) TDD I don't think that it would pass inspection today. but I have found while looking for other old stuff that the old pushbutton light switches and switch plates are being reproduced... I remember those from my grandparents' house and always thought they were kind of cool. nate You don't think a local country club with a membership that includes a number of politicians couldn't get a waiver? Here's a link to vintage style switches, plates and vintage look dimmers. http://preview.tinyurl.com/49nzlja TDD |
Strain relief for electrical cord on old appliance?
The Daring Dufas wrote:
I can't imagine the cost of wiring a theme restaurant or bar with knob and tube wiring. It would be a very interesting undertaking(no pun). :-) TDD Not obvious where knob & tube came from in this thread. Knob & tube is, specifically, concealed wiring. Wouldn't be any point in a theme restaurant if you can't see it. Could always install fake wiring. There is a restaurant here with a fake elevated train complete with sparks. If it is in the open it is "open wiring on insulators". Use in the current code is limited to "industrial and agricultural establishments". Maybe if they serve agricultural products.... -- bud-- |
Strain relief for electrical cord on old appliance?
On 2/9/2011 9:25 PM, The Daring Dufas wrote:
On 2/9/2011 3:27 PM, Tony Miklos wrote: On 2/8/2011 8:33 AM, The Daring Dufas wrote: On 2/8/2011 7:25 AM, deadgoose wrote: The early plugs were designed to be used with an "Underwriter's Knot" for strain relief. Here is a link to a pictu http://www.robertacory.com/RobertaCo...es/Page412.htm Handy to know... /paul W3FIS I've seen reproduction electrical items from a company that copies old fixtures for interior decorating and the cost of the reproduction cloth covered cords is outrageous. Of course, I would expect the new reproduction wire to be superior to the old cloth and rubber but DANG! TDD I used to deal a lot with "Antique Electronics Supply" before they were bought out and went wild with their prices. (about 20? years ago) I did a search and this place looks very competitive with a great selection! http://www.sundialwire.com/clothcoveredwire-1.aspx COOL! Thanks for that link. I made a new bookmark category "Electrical, Vintage & Reproduction" There are lots of folks who have old items they want repaired/restored who have the money to pay for it. :-) I needed some of the bright red cotton covered wire for inside a 1940's juke box, but I couldn't find it then. Only part of the juke run, (certain serial numbers) used that color (inside where no one can see) so I had to use the gold like most of those jukes had. It seems it was common to run out of a color wire and use something else. Stamped on a lot of 60's pinball machine schematics was something like: "Due to wire shortages wire colors on this schematic may or may not match actual wire colors in machine." And they had a lot of colors, then with 1 or 2 different color strips also. That sucked when it came down to tracing wires. |
Strain relief for electrical cord on old appliance?
On 2/9/2011 4:58 PM, Stormin Mormon wrote:
I've also asked the same question. He says the wire shorts, but says the case doesn't wear through the insullation. The average person who knows nothing about electric seldom knows the difference between a short and an open. You know the type, they ask were along the wall is a "plug in" for their lamp. |
Strain relief for electrical cord on old appliance?
On 2/10/2011 12:33 PM, bud-- wrote:
The Daring Dufas wrote: I can't imagine the cost of wiring a theme restaurant or bar with knob and tube wiring. It would be a very interesting undertaking(no pun). :-) TDD Not obvious where knob & tube came from in this thread. Knob & tube is, specifically, concealed wiring. Wouldn't be any point in a theme restaurant if you can't see it. Could always install fake wiring. There is a restaurant here with a fake elevated train complete with sparks. If it is in the open it is "open wiring on insulators". Use in the current code is limited to "industrial and agricultural establishments". Maybe if they serve agricultural products.... You are obviously not that familiar with knob and tube wiring. The earliest knob and tube wiring had parts that were exposed in areas like wall switches. It would be exposed in basements, attics and garages or anywhere the walls were not covered. I doubt most wiring was concealed during the rural electrification project in the 1930's. :-) TDD |
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