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Using crimped bullet connectors for earth continuity
I'm guessing this is not kosher on the basis the connection can be quite easily pulled apart? Are there any regs on the subject? (groan like there's NOT going to be!)
ta. |
Using crimped bullet connectors for earth continuity
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Using crimped bullet connectors for earth continuity
On Sunday 11 August 2013 16:45 wrote in uk.d-i-y:
I'm guessing this is not kosher on the basis the connection can be quite easily pulled apart? Are there any regs on the subject? (groan like there's NOT going to be!) ta. I do not see any probem with properly made crimps - a proper crimp will NOT pull apart. It may pull apart if you use a crap halfords set of "scissor" crimps though. One you get to main earth connections, likelihood is you will be out of standard insulated crimps and into larger uninsulated crimps. What is the conductor size and what type of earth are you proposing to crimp? -- Tim Watts Personal Blog: http://squiddy.blog.dionic.net/ http://www.sensorly.com/ Crowd mapping of 2G/3G/4G mobile signal coverage Reading this on the web? See: http://wiki.diyfaq.org.uk/index.php?title=Usenet |
Using crimped bullet connectors for earth continuity
ARW wrote:
wrote: I'm guessing this is not kosher on the basis the connection can be quite easily pulled apart? Are there any regs on the subject? (groan like there's NOT going to be!) Nothing wrong with crimps. But is there anything wrong with bullet connectors, not good to allow the earth to be disconnected easily, separate to the other conductors? |
Using crimped bullet connectors for earth continuity
On Sun, 11 Aug 2013 17:05:32 +0100, Tim Watts wrote:
On Sunday 11 August 2013 16:45 wrote in uk.d-i-y: I'm guessing this is not kosher on the basis the connection can be quite easily pulled apart? Are there any regs on the subject? (groan like there's NOT going to be!) ta. I do not see any probem with properly made crimps - a proper crimp will NOT pull apart. It may pull apart if you use a crap halfords set of "scissor" crimps though. One you get to main earth connections, likelihood is you will be out of standard insulated crimps and into larger uninsulated crimps. What is the conductor size and what type of earth are you proposing to crimp? The crimps are OK, but for something safety critical like an earth, I'd not want easily detachable (tool-less) connections to it! I think electrical earths require a continuous conductor between the earth bar and clamps etc., |
Using crimped bullet connectors for earth continuity
Andy Burns wrote:
ARW wrote: wrote: I'm guessing this is not kosher on the basis the connection can be quite easily pulled apart? Are there any regs on the subject? (groan like there's NOT going to be!) Nothing wrong with crimps. But is there anything wrong with bullet connectors, not good to allow the earth to be disconnected easily, separate to the other conductors? Ah. I read it as through connectors. Bullet connectors are a no no. Thanks Andy. -- Adam |
Using crimped bullet connectors for earth continuity
On Sunday, 11 August 2013 18:05:32 UTC+2, Tim Watts wrote:
I do not see any probem with properly made crimps - a proper crimp will NOT pull apart. It may pull apart if you use a crap halfords set of "scissor" crimps though. Er, bullet connectors are *supposed* to be pull-apartable and I'm concerned they may do so accidentally thereby disconnecting the earth. One you get to main earth connections, likelihood is you will be out of standard insulated crimps and into larger uninsulated crimps. What is the conductor size and what type of earth are you proposing to crimp? 230V motor grounding, 2.5mm^2 x-section earth wire. For the purposes of this temporary lash-up, I'm using the blue connectors. They ARE crimped properly, but It just doesn't seem right somehow to make this arrangement permanent. |
Using crimped bullet connectors for earth continuity
On Sunday 11 August 2013 17:58 Andy Burns wrote in uk.d-i-y:
ARW wrote: wrote: I'm guessing this is not kosher on the basis the connection can be quite easily pulled apart? Are there any regs on the subject? (groan like there's NOT going to be!) Nothing wrong with crimps. But is there anything wrong with bullet connectors, not good to allow the earth to be disconnected easily, separate to the other conductors? Don;t use bullet connectors anywhere near mains. They are good for bugger all apart from your car radio, -- Tim Watts Personal Blog: http://squiddy.blog.dionic.net/ http://www.sensorly.com/ Crowd mapping of 2G/3G/4G mobile signal coverage Reading this on the web? See: http://wiki.diyfaq.org.uk/index.php?title=Usenet |
Using crimped bullet connectors for earth continuity
"Tim Watts" wrote in message ... On Sunday 11 August 2013 16:45 wrote in uk.d-i-y: I'm guessing this is not kosher on the basis the connection can be quite easily pulled apart? Are there any regs on the subject? (groan like there's NOT going to be!) ta. I do not see any probem with properly made crimps - a proper crimp will NOT pull apart. It may pull apart if you use a crap halfords set of "scissor" crimps though. Bullet connectors are designed to pull apart. |
Using crimped bullet connectors for earth continuity
harryagain wrote:
"Tim Watts" wrote in message ... On Sunday 11 August 2013 16:45 wrote in uk.d-i-y: I'm guessing this is not kosher on the basis the connection can be quite easily pulled apart? Are there any regs on the subject? (groan like there's NOT going to be!) ta. I do not see any probem with properly made crimps - a proper crimp will NOT pull apart. It may pull apart if you use a crap halfords set of "scissor" crimps though. Bullet connectors are designed to pull apart. As pointed out by Andy Burns over 2 hours ago -- Adam |
Using crimped bullet connectors for earth continuity
On Sun, 11 Aug 2013 20:13:29 +0100, Tim Watts wrote:
On Sunday 11 August 2013 18:47 wrote in uk.d-i-y: On Sunday, 11 August 2013 18:05:32 UTC+2, Tim Watts wrote: I do not see any probem with properly made crimps - a proper crimp will NOT pull apart. It may pull apart if you use a crap halfords set of "scissor" crimps though. Er, bullet connectors are *supposed* to be pull-apartable and I'm concerned they may do so accidentally thereby disconnecting the earth. One you get to main earth connections, likelihood is you will be out of standard insulated crimps and into larger uninsulated crimps. What is the conductor size and what type of earth are you proposing to crimp? 230V motor grounding, 2.5mm^2 x-section earth wire. For the purposes of this temporary lash-up, I'm using the blue connectors. They ARE crimped properly, but It just doesn't seem right somehow to make this arrangement permanent. There is no problem at all with what you are doing. Well done crimps are better than screw terminals and you'd use those wouldn't you? Either screws or crimped... all a bit academic if the bullet connector has been parted...! |
Using crimped bullet connectors for earth continuity
On 11/08/2013 20:23, ARW wrote:
harryagain wrote: "Tim wrote in message ... On Sunday 11 August 2013 16:45 wrote in uk.d-i-y: I'm guessing this is not kosher on the basis the connection can be quite easily pulled apart? Are there any regs on the subject? (groan like there's NOT going to be!) ta. I do not see any probem with properly made crimps - a proper crimp will NOT pull apart. It may pull apart if you use a crap halfords set of "scissor" crimps though. Bullet connectors are designed to pull apart. As pointed out by Andy Burns over 2 hours ago Indeed. But if you want it make it less likely that they will pull apart when you don't want them to, you can always fold the wires back on each other and put some cable ties round them (the wires, that is) for strain relief. Almost certainly wouldn't meet any relevant regs, but it should *work*. -- Cheers, Roger ____________ Please reply to Newsgroup. Whilst email address is valid, it is seldom checked. |
Using crimped bullet connectors for earth continuity
On Sunday 11 August 2013 20:30 steve wrote in uk.d-i-y:
On Sun, 11 Aug 2013 20:13:29 +0100, Tim Watts wrote: On Sunday 11 August 2013 18:47 wrote in uk.d-i-y: On Sunday, 11 August 2013 18:05:32 UTC+2, Tim Watts wrote: I do not see any probem with properly made crimps - a proper crimp will NOT pull apart. It may pull apart if you use a crap halfords set of "scissor" crimps though. Er, bullet connectors are *supposed* to be pull-apartable and I'm concerned they may do so accidentally thereby disconnecting the earth. One you get to main earth connections, likelihood is you will be out of standard insulated crimps and into larger uninsulated crimps. What is the conductor size and what type of earth are you proposing to crimp? 230V motor grounding, 2.5mm^2 x-section earth wire. For the purposes of this temporary lash-up, I'm using the blue connectors. They ARE crimped properly, but It just doesn't seem right somehow to make this arrangement permanent. There is no problem at all with what you are doing. Well done crimps are better than screw terminals and you'd use those wouldn't you? Either screws or crimped... all a bit academic if the bullet connector has been parted...! I shoudl clarify that I mean "crimped barrel connectors" NOT any sort of easily seperated connector. -- Tim Watts Personal Blog: http://squiddy.blog.dionic.net/ http://www.sensorly.com/ Crowd mapping of 2G/3G/4G mobile signal coverage Reading this on the web? See: http://wiki.diyfaq.org.uk/index.php?title=Usenet |
Using crimped bullet connectors for earth continuity
In article , Andy
Burns scribeth thus ARW wrote: wrote: I'm guessing this is not kosher on the basis the connection can be quite easily pulled apart? Are there any regs on the subject? (groan like there's NOT going to be!) Nothing wrong with crimps. But is there anything wrong with bullet connectors, not good to allow the earth to be disconnected easily, separate to the other conductors? No No and three times No!. Bullet connectors are not to be used on Earth systems. Crimped with a good ratchet crimper and decent crimps are just fine as good as cold welding ... -- Tony Sayer |
Using crimped bullet connectors for earth continuity
On Sun, 11 Aug 2013 21:34:32 +0100, Tim Watts wrote:
On Sunday 11 August 2013 20:30 steve wrote in uk.d-i-y: On Sun, 11 Aug 2013 20:13:29 +0100, Tim Watts wrote: On Sunday 11 August 2013 18:47 wrote in uk.d-i-y: On Sunday, 11 August 2013 18:05:32 UTC+2, Tim Watts wrote: I do not see any probem with properly made crimps - a proper crimp will NOT pull apart. It may pull apart if you use a crap halfords set of "scissor" crimps though. Er, bullet connectors are *supposed* to be pull-apartable and I'm concerned they may do so accidentally thereby disconnecting the earth. One you get to main earth connections, likelihood is you will be out of standard insulated crimps and into larger uninsulated crimps. What is the conductor size and what type of earth are you proposing to crimp? 230V motor grounding, 2.5mm^2 x-section earth wire. For the purposes of this temporary lash-up, I'm using the blue connectors. They ARE crimped properly, but It just doesn't seem right somehow to make this arrangement permanent. There is no problem at all with what you are doing. Well done crimps are better than screw terminals and you'd use those wouldn't you? Either screws or crimped... all a bit academic if the bullet connector has been parted...! I shoudl clarify that I mean "crimped barrel connectors" NOT any sort of easily seperated connector. I'm sure you did mean that, but your initial advice, along with an electrician's was wrong and could have been dangerous. |
Using crimped bullet connectors for earth continuity
On Sunday 11 August 2013 22:01 steve wrote in uk.d-i-y:
I'm sure you did mean that, but your initial advice, along with an electrician's was wrong and could have been dangerous. I think we all blanked out the "bullet" bit - my sanity filter certainly removed it as a "why would anyone do that - does not compute..."? The important thing is that it has been clarified - 1) No partable connectors 2) Crimped permanant joints are fine if done with the correct tools. -- Tim Watts Personal Blog: http://squiddy.blog.dionic.net/ http://www.sensorly.com/ Crowd mapping of 2G/3G/4G mobile signal coverage Reading this on the web? See: http://wiki.diyfaq.org.uk/index.php?title=Usenet |
Using crimped bullet connectors for earth continuity
On Sunday, 11 August 2013 22:43:12 UTC+2, tony sayer wrote:
No No and three times No!. Bullet connectors are not to be used on Earth systems. Crimped with a good ratchet crimper and decent crimps are just fine as good as cold welding ... Non-sequitur alert! I seem to have broken several otherwise-perfectly-intelligent people's brains with this simple query. ;) |
Using crimped bullet connectors for earth continuity
On 11/08/2013 23:36, wrote:
On Sunday, 11 August 2013 22:43:12 UTC+2, tony sayer wrote: No No and three times No!. Bullet connectors are not to be used on Earth systems. Crimped with a good ratchet crimper and decent crimps are just fine as good as cold welding ... Non-sequitur alert! I seem to have broken several otherwise-perfectly-intelligent people's brains with this simple query. ;) It might be the similarity between butt crimps and bullet crimps. The former (permanent cable jointing method) are fine, the latter (demountable), not. -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
Using crimped bullet connectors for earth continuity
On 11/08/2013 21:34, Tim Watts wrote:
On Sunday 11 August 2013 20:30 steve wrote in uk.d-i-y: On Sun, 11 Aug 2013 20:13:29 +0100, Tim Watts wrote: On Sunday 11 August 2013 18:47 wrote in uk.d-i-y: On Sunday, 11 August 2013 18:05:32 UTC+2, Tim Watts wrote: I do not see any probem with properly made crimps - a proper crimp will NOT pull apart. It may pull apart if you use a crap halfords set of "scissor" crimps though. Er, bullet connectors are *supposed* to be pull-apartable and I'm concerned they may do so accidentally thereby disconnecting the earth. One you get to main earth connections, likelihood is you will be out of standard insulated crimps and into larger uninsulated crimps. What is the conductor size and what type of earth are you proposing to crimp? 230V motor grounding, 2.5mm^2 x-section earth wire. For the purposes of this temporary lash-up, I'm using the blue connectors. They ARE crimped properly, but It just doesn't seem right somehow to make this arrangement permanent. There is no problem at all with what you are doing. Well done crimps are better than screw terminals and you'd use those wouldn't you? Either screws or crimped... all a bit academic if the bullet connector has been parted...! I shoudl clarify that I mean "crimped barrel connectors" NOT any sort of easily seperated connector. For the avoidance of doubt: http://wiki.diyfaq.org.uk/index.php?...:BlueCrimp.jpg -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
Using crimped bullet connectors for earth continuity
On Monday, 12 August 2013 01:55:37 UTC+2, John Rumm wrote:
On 11/08/2013 21:34, Tim Watts wrote: On Sunday 11 August 2013 20:30 steve wrote in uk.d-i-y: On Sun, 11 Aug 2013 20:13:29 +0100, Tim Watts wrote: On Sunday 11 August 2013 18:47 wrote in uk.d-i-y: On Sunday, 11 August 2013 18:05:32 UTC+2, Tim Watts wrote: I do not see any probem with properly made crimps - a proper crimp will NOT pull apart. It may pull apart if you use a crap halfords set of "scissor" crimps though. Er, bullet connectors are *supposed* to be pull-apartable and I'm concerned they may do so accidentally thereby disconnecting the earth. One you get to main earth connections, likelihood is you will be out of standard insulated crimps and into larger uninsulated crimps. What is the conductor size and what type of earth are you proposing to crimp? 230V motor grounding, 2.5mm^2 x-section earth wire. For the purposes of this temporary lash-up, I'm using the blue connectors. They ARE crimped properly, but It just doesn't seem right somehow to make this arrangement permanent. There is no problem at all with what you are doing. Well done crimps are better than screw terminals and you'd use those wouldn't you? Either screws or crimped... all a bit academic if the bullet connector has been parted...! I shoudl clarify that I mean "crimped barrel connectors" NOT any sort of easily seperated connector. For the avoidance of doubt: http://wiki.diyfaq.org.uk/index.php?...:BlueCrimp.jpg Indeed. These are the 'permanent' type. I have to admit to struggling a bit these days with the crimping process (my age, no doubt). I wonder if there's a civilised alternative to those clumping great ratchet thingies you have to be Popeye to close fully? I know there are hydraulic types available for thicker cables, but it would be nifty if something similar were obtainable for the red/blue/yellow standard as well. |
Using crimped bullet connectors for earth continuity
On Sun, 11 Aug 2013 21:43:12 +0100, tony sayer
wrote: In article , Andy Burns scribeth thus ARW wrote: wrote: I'm guessing this is not kosher on the basis the connection can be quite easily pulled apart? Are there any regs on the subject? (groan like there's NOT going to be!) Nothing wrong with crimps. But is there anything wrong with bullet connectors, not good to allow the earth to be disconnected easily, separate to the other conductors? No No and three times No!. Bullet connectors are not to be used on Earth systems. Unless you put isolating switches on both sides of the connectors, thus preventing a risk of shock when breaking the earth circuit ;-). AB Crimped with a good ratchet crimper and decent crimps are just fine as good as cold welding ... |
Using crimped bullet connectors for earth continuity
On Sunday 11 August 2013 23:36 wrote in uk.d-i-y:
On Sunday, 11 August 2013 22:43:12 UTC+2, tony sayer wrote: No No and three times No!. Bullet connectors are not to be used on Earth systems. Crimped with a good ratchet crimper and decent crimps are just fine as good as cold welding ... Non-sequitur alert! I seem to have broken several otherwise-perfectly-intelligent people's brains with this simple query. ;) Why are you using bullet connectors anyway? Did you not have any barrel crimps? -- Tim Watts Personal Blog: http://squiddy.blog.dionic.net/ http://www.sensorly.com/ Crowd mapping of 2G/3G/4G mobile signal coverage Reading this on the web? See: http://wiki.diyfaq.org.uk/index.php?title=Usenet |
Using crimped bullet connectors for earth continuity
On 12/08/2013 01:01, wrote:
Indeed. These are the 'permanent' type. I have to admit to struggling a bit these days with the crimping process (my age, no doubt). I wonder if there's a civilised alternative to those clumping great ratchet thingies you have to be Popeye to close fully? I know there are hydraulic types available for thicker cables, but it would be nifty if something similar were obtainable for the red/blue/yellow standard as well. A couple of lengths of appropriately sized tubing to fit over the end of the handles of the ratchet crimper and extend them a few inches would do the trick. -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
Using crimped bullet connectors for earth continuity
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Using crimped bullet connectors for earth continuity
On Monday, 12 August 2013 07:33:10 UTC+2, Tim Watts wrote:
Why are you using bullet connectors anyway? Did you not have any barrel crimps? Yeah, loads of them. But this was just a temporary lash-up to see if the motor functioned, so I took no trouble over cable routing. |
Using crimped bullet connectors for earth continuity
On 12/08/2013 11:31, wrote:
On Monday, 12 August 2013 07:33:10 UTC+2, Tim Watts wrote: Why are you using bullet connectors anyway? Did you not have any barrel crimps? Yeah, loads of them. But this was just a temporary lash-up to see if the motor functioned, so I took no trouble over cable routing. Would something like this be a better for testing? http://www.burntec.com/Quick_Test_Mains_Connection_Box (First hit on google, not necessarily the cheapest/best supplier) -- Toby... Remove pants to reply |
Using crimped bullet connectors for earth continuity
On 12/08/2013 13:10, Toby wrote:
On 12/08/2013 11:31, wrote: On Monday, 12 August 2013 07:33:10 UTC+2, Tim Watts wrote: Why are you using bullet connectors anyway? Did you not have any barrel crimps? Yeah, loads of them. But this was just a temporary lash-up to see if the motor functioned, so I took no trouble over cable routing. Would something like this be a better for testing? http://www.burntec.com/Quick_Test_Mains_Connection_Box (First hit on google, not necessarily the cheapest/best supplier) Not exactly three phase though is it? ;-) -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
Using crimped bullet connectors for earth continuity
On 12/08/2013 22:29, John Rumm wrote:
On 12/08/2013 13:10, Toby wrote: On 12/08/2013 11:31, wrote: On Monday, 12 August 2013 07:33:10 UTC+2, Tim Watts wrote: Why are you using bullet connectors anyway? Did you not have any barrel crimps? Yeah, loads of them. But this was just a temporary lash-up to see if the motor functioned, so I took no trouble over cable routing. Would something like this be a better for testing? http://www.burntec.com/Quick_Test_Mains_Connection_Box (First hit on google, not necessarily the cheapest/best supplier) Not exactly three phase though is it? ;-) Then glue two together then ;-) -- Toby... Remove your pants to reply |
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