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Can you use white for one leg of 240V circuit?
On May 7, 3:08*pm, Metspitzer wrote:
On Sat, 7 May 2011 14:46:49 -0400, "Twayne" wrote: Yes, as long as it's labelled or colored at each end what its color should be. I think It's in the NEC but I can't cite it. IIRC, and you might want to check this out for su In such a ckt, the norm is: RED = Always hot Blk = switched hot WH = Neutral I always made the red the switched. *So much for normal. I had a foreman once that ordered purple to use for travelers and switch legs. *I always thought that was a good idea. Purple must have been used in 120/240v service for travellers... It would have been confused as a phase conductor in 277/480v Wye power systems... Where it wouldn't be confused with the phase conductors -- in serious commercial/industrial applications all of the wiring from the panel to the farthest end of each circuit is colored by phase: In 120/240v systems it is common to use the following colors for circuit conductors: L1: Black L2: Red L3: Blue N: White G: Green or Green/Yellow stripe Where you would also mark a "high leg" in a Delta wired system with Orange... In 277/480v systems you would use the following colors: L1: Brown L2: Orange (delta) Purple (wye) L3: Yellow N: Grey G: Green Those color "common practices" are not code but they are generally adhered to due to the ease of servicing such installations without needing to resort to numbering each conductor and using wiring diagrams every time you open up connections to work on them... When you remove a cover plate on a switch for lighting and see the colors of the wires you would know which voltage you are working on... As far as switch legs in residential construction: White in a two-wire cable used as a switch leg is always to be the supply side of the leg, the switched load is to be on the Black conductor... Although this is going to be a moot point going forward as there is now a new code requirement that a neutral be provided at every switch location... That means three wire cables and White being the neutral... In general practice in switch circuits Black is usually constant power, only being switched if there are multiple groups of lighting being fed off the one cable -- this is useful where you might have a ceiling fan where the fan portion is controlled by the pull string on the fan or an integral remote control... The lights on the fan would be powered by the Red conductor which is switched... This logic also applies to wiring for receptacles, where with a three wire cable you could have a switched receptacle (or several switched receptacles) in a room where the Black conductor is constant power and the Red conductor is the switched load... If only more people wired their houses with three or four wire cable they would be able to do many more interesting things later on down the road without needing to rip into the walls or snake additional wires in finished walls... ~~ Evan |
Can you use white for one leg of 240V circuit?
On May 7, 3:08*pm, Metspitzer wrote:
On Sat, 7 May 2011 14:46:49 -0400, "Twayne" wrote: Yes, as long as it's labelled or colored at each end what its color should be. I think It's in the NEC but I can't cite it. IIRC, and you might want to check this out for su In such a ckt, the norm is: RED = Always hot Blk = switched hot WH = Neutral I always made the red the switched. *So much for normal. I had a foreman once that ordered purple to use for travelers and switch legs. *I always thought that was a good idea. NO NO SPITFIRE...RED IS HOT ALWAYS..WHERE THE HECK IS YOUR COMMON SENSE DUDE??? SHAPE UP OR SHIP OUT...... TGITM |
Can you use white for one leg of 240V circuit?
On May 7, 8:49*pm, Evan wrote:
On May 7, 3:08*pm, Metspitzer wrote: On Sat, 7 May 2011 14:46:49 -0400, "Twayne" wrote: Yes, as long as it's labelled or colored at each end what its color should be. I think It's in the NEC but I can't cite it. IIRC, and you might want to check this out for su In such a ckt, the norm is: RED = Always hot Blk = switched hot WH = Neutral I always made the red the switched. *So much for normal. I had a foreman once that ordered purple to use for travelers and switch legs. *I always thought that was a good idea. Purple must have been used in 120/240v service for travellers... It would have been confused as a phase conductor in 277/480v Wye power systems... Where it wouldn't be confused with the phase conductors -- in serious commercial/industrial applications all of the wiring from the panel to the farthest end of each circuit is colored by phase: In 120/240v systems it is common to use the following colors for circuit conductors: L1: Black L2: Red L3: Blue N: White G: Green or Green/Yellow stripe Where you would also mark a "high leg" in a Delta wired system with Orange... In 277/480v systems you would use the following colors: L1: Brown L2: Orange (delta) *Purple (wye) L3: Yellow N: Grey G: Green Those color "common practices" are not code but they are generally adhered to due to the ease of servicing such installations without needing to resort to numbering each conductor and using wiring diagrams every time you open up connections to work on them... *When you remove a cover plate on a switch for lighting and see the colors of the wires you would know which voltage you are working on... As far as switch legs in residential construction: White in a two-wire cable used as a switch leg is always to be the supply side of the leg, the switched load is to be on the Black conductor... *Although this is going to be a moot point going forward as there is now a new code requirement that a neutral be provided at every switch location... *That means three wire cables and White being the neutral... In general practice in switch circuits Black is usually constant power, only being switched if there are multiple groups of lighting being fed off the one cable -- this is useful where you might have a ceiling fan where the fan portion is controlled by the pull string on the fan or an integral remote control... *The lights on the fan would be powered by the Red conductor which is switched... This logic also applies to wiring for receptacles, where with a three wire cable you could have a switched receptacle (or several switched receptacles) in a room where the Black conductor is constant power and the Red conductor is the switched load... If only more people wired their houses with three or four wire cable they would be able to do many more interesting things later on down the road without needing to rip into the walls or snake additional wires in finished walls... ~~ Evan WHAT ARE YOU ??? AN ELECTRIC CABLE MANUFACTURER TRYING TO SEREPTICIOUSLY BOOST YOUR SALES HERE :) TAKE A HIKE MISTER ! BOOOWAHAHA ! TGITM |
Can you use white for one leg of 240V circuit?
On 5/7/2011 7:49 PM, Evan wrote:
On May 7, 3:08 pm, wrote: On Sat, 7 May 2011 14:46:49 -0400, "Twayne" wrote: Yes, as long as it's labelled or colored at each end what its color should be. I think It's in the NEC but I can't cite it. IIRC, and you might want to check this out for su In such a ckt, the norm is: RED = Always hot Blk = switched hot WH = Neutral I always made the red the switched. So much for normal. I had a foreman once that ordered purple to use for travelers and switch legs. I always thought that was a good idea. Purple must have been used in 120/240v service for travellers... It would have been confused as a phase conductor in 277/480v Wye power systems... Where it wouldn't be confused with the phase conductors -- in serious commercial/industrial applications all of the wiring from the panel to the farthest end of each circuit is colored by phase: In 120/240v systems it is common to use the following colors for circuit conductors: L1: Black L2: Red L3: Blue N: White G: Green or Green/Yellow stripe Where you would also mark a "high leg" in a Delta wired system with Orange... In 277/480v systems you would use the following colors: L1: Brown L2: Orange (delta) Purple (wye) L3: Yellow N: Grey G: Green Those color "common practices" are not code but they are generally adhered to due to the ease of servicing such installations without needing to resort to numbering each conductor and using wiring diagrams every time you open up connections to work on them... When you remove a cover plate on a switch for lighting and see the colors of the wires you would know which voltage you are working on... As far as switch legs in residential construction: White in a two-wire cable used as a switch leg is always to be the supply side of the leg, the switched load is to be on the Black conductor... Although this is going to be a moot point going forward as there is now a new code requirement that a neutral be provided at every switch location... That means three wire cables and White being the neutral... In general practice in switch circuits Black is usually constant power, only being switched if there are multiple groups of lighting being fed off the one cable -- this is useful where you might have a ceiling fan where the fan portion is controlled by the pull string on the fan or an integral remote control... The lights on the fan would be powered by the Red conductor which is switched... This logic also applies to wiring for receptacles, where with a three wire cable you could have a switched receptacle (or several switched receptacles) in a room where the Black conductor is constant power and the Red conductor is the switched load... If only more people wired their houses with three or four wire cable they would be able to do many more interesting things later on down the road without needing to rip into the walls or snake additional wires in finished walls... ~~ Evan The guy insisting on purple for travelers may have been using 277volt lighting. Most of the 120 volt travelers I've ever seen were blue. TDD |
Can you use white for one leg of 240V circuit?
On May 7, 10:04*pm, The Daring Dufas
wrote: On 5/7/2011 7:49 PM, Evan wrote: On May 7, 3:08 pm, *wrote: On Sat, 7 May 2011 14:46:49 -0400, "Twayne" *wrote: Yes, as long as it's labelled or colored at each end what its color should be. I think It's in the NEC but I can't cite it. IIRC, and you might want to check this out for su In such a ckt, the norm is: RED = Always hot Blk = switched hot WH = Neutral I always made the red the switched. *So much for normal. I had a foreman once that ordered purple to use for travelers and switch legs. *I always thought that was a good idea. Purple must have been used in 120/240v service for travellers... It would have been confused as a phase conductor in 277/480v Wye power systems... Where it wouldn't be confused with the phase conductors -- in serious commercial/industrial applications all of the wiring from the panel to the farthest end of each circuit is colored by phase: In 120/240v systems it is common to use the following colors for circuit conductors: L1: Black L2: Red L3: Blue N: White G: Green or Green/Yellow stripe Where you would also mark a "high leg" in a Delta wired system with Orange... In 277/480v systems you would use the following colors: L1: Brown L2: Orange (delta) *Purple (wye) L3: Yellow N: Grey G: Green Those color "common practices" are not code but they are generally adhered to due to the ease of servicing such installations without needing to resort to numbering each conductor and using wiring diagrams every time you open up connections to work on them... *When you remove a cover plate on a switch for lighting and see the colors of the wires you would know which voltage you are working on... As far as switch legs in residential construction: White in a two-wire cable used as a switch leg is always to be the supply side of the leg, the switched load is to be on the Black conductor... *Although this is going to be a moot point going forward as there is now a new code requirement that a neutral be provided at every switch location... *That means three wire cables and White being the neutral... In general practice in switch circuits Black is usually constant power, only being switched if there are multiple groups of lighting being fed off the one cable -- this is useful where you might have a ceiling fan where the fan portion is controlled by the pull string on the fan or an integral remote control... *The lights on the fan would be powered by the Red conductor which is switched... This logic also applies to wiring for receptacles, where with a three wire cable you could have a switched receptacle (or several switched receptacles) in a room where the Black conductor is constant power and the Red conductor is the switched load... If only more people wired their houses with three or four wire cable they would be able to do many more interesting things later on down the road without needing to rip into the walls or snake additional wires in finished walls... ~~ Evan The guy insisting on purple for travelers may have been using 277volt lighting. Most of the 120 volt travelers I've ever seen were blue. TDD You wouldn't want to use the purple color out of phase... So perhaps on a lighting circuit fed from L2 he could have used purple travelers... Some installations are fairly anal about maintaining that color coding so you can tell instantly what phase your circuit is powered on the second you take off a cover plate or open an enclosure... ~~ Evan |
Can you use white for one leg of 240V circuit?
"The Daring Dufas" wrote in message
... stuff snipped My walls would be hollow and wide enough to walk through. I would install the obligatory portraits with the eye holes cut out and I'd dig an escape tunnel into the woods behind the house that had rails and a jet propelled exit sled. And I'd have a moat and drawbridge with a secret trap door to send Saturday morning door-knocking, save your soul religious types straight to a moat baptism while fighting off the alligators and piranhas in the water. That way, I could get to look down at them and say: "You disagreed with something that ate you." -- Bobby G. I used to have fun frightening those Jesus freaks when they came to the door by claiming to be in the middle of Satanic ritual sacrifice of a nubile virgin. If I saw them in the area going from house to house and had the time, I would call some friends to get in on it and setup a whole faux Satanic ritual to confront the proselytizers with. I had a couple of gal pals who did the greatest evil diva act which would send many of the door knockers running in terror. It was such fun back then. ^_^ It's too bad I don't have time for much fun with them anymore. I did mount a 12" alarm bell right above the front door to discourage the more persistent ones. They're the ones who knock forever (and could easily be looking for homes to target for burglary) and upset all the neighborhood dogs. It's easy to tell when they are "working the area." The best part is watching them skulk away like they didn't do anything. The worst of the bunch was not Jehovah's Witlesses, but some kids Verizon hired to peddle FIOS. Verizon went from "no information about FIOS in your area is available" to banging my door down every few days. -- Bobby G. |
Can you use white for one leg of 240V circuit?
On 5/8/2011 1:05 PM, Robert Green wrote:
"The Daring wrote in message ... stuff snipped My walls would be hollow and wide enough to walk through. I would install the obligatory portraits with the eye holes cut out and I'd dig an escape tunnel into the woods behind the house that had rails and a jet propelled exit sled. And I'd have a moat and drawbridge with a secret trap door to send Saturday morning door-knocking, save your soul religious types straight to a moat baptism while fighting off the alligators and piranhas in the water. That way, I could get to look down at them and say: "You disagreed with something that ate you." -- Bobby G. I used to have fun frightening those Jesus freaks when they came to the door by claiming to be in the middle of Satanic ritual sacrifice of a nubile virgin. If I saw them in the area going from house to house and had the time, I would call some friends to get in on it and setup a whole faux Satanic ritual to confront the proselytizers with. I had a couple of gal pals who did the greatest evil diva act which would send many of the door knockers running in terror. It was such fun back then. ^_^ It's too bad I don't have time for much fun with them anymore. I did mount a 12" alarm bell right above the front door to discourage the more persistent ones. They're the ones who knock forever (and could easily be looking for homes to target for burglary) and upset all the neighborhood dogs. It's easy to tell when they are "working the area." The best part is watching them skulk away like they didn't do anything. The worst of the bunch was not Jehovah's Witlesses, but some kids Verizon hired to peddle FIOS. Verizon went from "no information about FIOS in your area is available" to banging my door down every few days. -- Bobby G. Some of them don't understand what "No Soliciting" or "No Salesmen" on a sign at your front gate means. Pepper spray helps train them. :-) TDD |
Can you use white for one leg of 240V circuit?
Followed by one leg of the 240 VAC circuit?
-- Christopher A. Young Learn more about Jesus www.lds.org .. "The Daring Dufas" wrote in message ... Some of them don't understand what "No Soliciting" or "No Salesmen" on a sign at your front gate means. Pepper spray helps train them. :-) TDD |
Can you use white for one leg of 240V circuit?
In ,
The Daring Dufas typed: On 5/7/2011 7:49 PM, Evan wrote: On May 7, 3:08 pm, wrote: On Sat, 7 May 2011 14:46:49 -0400, "Twayne" wrote: Yes, as long as it's labelled or colored at each end what its color should be. I think It's in the NEC but I can't cite it. IIRC, and you might want to check this out for su In such a ckt, the norm is: RED = Always hot Blk = switched hot WH = Neutral I always made the red the switched. So much for normal. I had a foreman once that ordered purple to use for travelers and switch legs. I always thought that was a good idea. Purple must have been used in 120/240v service for travellers... It would have been confused as a phase conductor in 277/480v Wye power systems... Where it wouldn't be confused with the phase conductors -- in serious commercial/industrial applications all of the wiring from the panel to the farthest end of each circuit is colored by phase: In 120/240v systems it is common to use the following colors for circuit conductors: L1: Black L2: Red L3: Blue N: White G: Green or Green/Yellow stripe Where you would also mark a "high leg" in a Delta wired system with Orange... In 277/480v systems you would use the following colors: L1: Brown L2: Orange (delta) Purple (wye) L3: Yellow N: Grey G: Green Those color "common practices" are not code but they are generally adhered to due to the ease of servicing such installations without needing to resort to numbering each conductor and using wiring diagrams every time you open up connections to work on them... When you remove a cover plate on a switch for lighting and see the colors of the wires you would know which voltage you are working on... As far as switch legs in residential construction: White in a two-wire cable used as a switch leg is always to be the supply side of the leg, the switched load is to be on the Black conductor... Although this is going to be a moot point going forward as there is now a new code requirement that a neutral be provided at every switch location... That means three wire cables and White being the neutral... In general practice in switch circuits Black is usually constant power, only being switched if there are multiple groups of lighting being fed off the one cable -- this is useful where you might have a ceiling fan where the fan portion is controlled by the pull string on the fan or an integral remote control... The lights on the fan would be powered by the Red conductor which is switched... This logic also applies to wiring for receptacles, where with a three wire cable you could have a switched receptacle (or several switched receptacles) in a room where the Black conductor is constant power and the Red conductor is the switched load... If only more people wired their houses with three or four wire cable they would be able to do many more interesting things later on down the road without needing to rip into the walls or snake additional wires in finished walls... ~~ Evan The guy insisting on purple for travelers may have been using 277volt lighting. Most of the 120 volt travelers I've ever seen were blue. TDD That sounds more like a European spec; brown, blue & |
Can you use white for one leg of 240V circuit?
The Daring Dufas posted for all of us...
On 5/7/2011 2:29 PM, RBM wrote: wrote in message ... On Sat, 7 May 2011 14:46:49 -0400, "Twayne" wrote: Yes, as long as it's labelled or colored at each end what its color should be. I think It's in the NEC but I can't cite it. IIRC, and you might want to check this out for su In such a ckt, the norm is: RED = Always hot Blk = switched hot WH = Neutral I always made the red the switched. So much for normal. I had a foreman once that ordered purple to use for travelers and switch legs. I always thought that was a good idea. ** That's fine if you're pulling your own conductors. The Nec has no specific colors for switched legs, other than not using the white wire of a cable, as the return from a switch. All colors are considered "hot" except green, white, and natural gray. and no, I have no idea what the difference is between gray, and natural gray. Natural gray is really old and cranky wire. ^_^ TDD Is the "Just for Wire" ? -- Tekkie |
Can you use white for one leg of 240V circuit?
On 5/9/2011 10:08 AM, Tekkie® wrote:
The Daring Dufas posted for all of us... On 5/7/2011 2:29 PM, RBM wrote: wrote in message ... On Sat, 7 May 2011 14:46:49 -0400, "Twayne" wrote: Yes, as long as it's labelled or colored at each end what its color should be. I think It's in the NEC but I can't cite it. IIRC, and you might want to check this out for su In such a ckt, the norm is: RED = Always hot Blk = switched hot WH = Neutral I always made the red the switched. So much for normal. I had a foreman once that ordered purple to use for travelers and switch legs. I always thought that was a good idea. ** That's fine if you're pulling your own conductors. The Nec has no specific colors for switched legs, other than not using the white wire of a cable, as the return from a switch. All colors are considered "hot" except green, white, and natural gray. and no, I have no idea what the difference is between gray, and natural gray. Natural gray is really old and cranky wire. ^_^ TDD Is the "Just for Wire" ? Yea, whenever you want to renew the color of your old wiring. It renews the color of the wiring but doesn't do much for the cracks in the insulation. There are other products that work for filling in the cracks and wrinkles in your old wiring, I think one is called "Almay Electra". ^_^ TDD |
Can you use white for one leg of 240V circuit?
On May 9, 9:57*am, "Twayne" wrote:
, The Daring Dufas typed: On 5/7/2011 7:49 PM, Evan wrote: On May 7, 3:08 pm, wrote: On Sat, 7 May 2011 14:46:49 -0400, "Twayne" *wrote: Yes, as long as it's labelled or colored at each end what its color should be. I think It's in the NEC but I can't cite it. IIRC, and you might want to check this out for su In such a ckt, the norm is: RED = Always hot Blk = switched hot WH = Neutral I always made the red the switched. *So much for normal. I had a foreman once that ordered purple to use for travelers and switch legs. *I always thought that was a good idea. Purple must have been used in 120/240v service for travellers... It would have been confused as a phase conductor in 277/480v Wye power systems... Where it wouldn't be confused with the phase conductors -- in serious commercial/industrial applications all of the wiring from the panel to the farthest end of each circuit is colored by phase: In 120/240v systems it is common to use the following colors for circuit conductors: L1: Black L2: Red L3: Blue N: White G: Green or Green/Yellow stripe Where you would also mark a "high leg" in a Delta wired system with Orange... In 277/480v systems you would use the following colors: L1: Brown L2: Orange (delta) *Purple (wye) L3: Yellow N: Grey G: Green Those color "common practices" are not code but they are generally adhered to due to the ease of servicing such installations without needing to resort to numbering each conductor and using wiring diagrams every time you open up connections to work on them... *When you remove a cover plate on a switch for lighting and see the colors of the wires you would know which voltage you are working on... As far as switch legs in residential construction: White in a two-wire cable used as a switch leg is always to be the supply side of the leg, the switched load is to be on the Black conductor... *Although this is going to be a moot point going forward as there is now a new code requirement that a neutral be provided at every switch location... *That means three wire cables and White being the neutral... In general practice in switch circuits Black is usually constant power, only being switched if there are multiple groups of lighting being fed off the one cable -- this is useful where you might have a ceiling fan where the fan portion is controlled by the pull string on the fan or an integral remote control... *The lights on the fan would be powered by the Red conductor which is switched... This logic also applies to wiring for receptacles, where with a three wire cable you could have a switched receptacle (or several switched receptacles) in a room where the Black conductor is constant power and the Red conductor is the switched load... If only more people wired their houses with three or four wire cable they would be able to do many more interesting things later on down the road without needing to rip into the walls or snake additional wires in finished walls... ~~ Evan The guy insisting on purple for travelers may have been using 277volt lighting. Most of the 120 volt travelers I've ever seen were blue. TDD That sounds more like a European spec; brown, blue & Nope... Just sounds like you haven't worked in many commercial or industrial facilities is all... ~~ Evan |
Can you use white for one leg of 240V circuit?
On May 9, 8:01*pm, Evan wrote:
On May 9, 9:57*am, "Twayne" wrote: , The Daring Dufas typed: On 5/7/2011 7:49 PM, Evan wrote: On May 7, 3:08 pm, wrote: On Sat, 7 May 2011 14:46:49 -0400, "Twayne" *wrote: Yes, as long as it's labelled or colored at each end what its color should be. I think It's in the NEC but I can't cite it. IIRC, and you might want to check this out for su In such a ckt, the norm is: RED = Always hot Blk = switched hot WH = Neutral I always made the red the switched. *So much for normal. I had a foreman once that ordered purple to use for travelers and switch legs. *I always thought that was a good idea. Purple must have been used in 120/240v service for travellers... It would have been confused as a phase conductor in 277/480v Wye power systems... Where it wouldn't be confused with the phase conductors -- in serious commercial/industrial applications all of the wiring from the panel to the farthest end of each circuit is colored by phase: In 120/240v systems it is common to use the following colors for circuit conductors: L1: Black L2: Red L3: Blue N: White G: Green or Green/Yellow stripe Where you would also mark a "high leg" in a Delta wired system with Orange... In 277/480v systems you would use the following colors: L1: Brown L2: Orange (delta) *Purple (wye) L3: Yellow N: Grey G: Green Those color "common practices" are not code but they are generally adhered to due to the ease of servicing such installations without needing to resort to numbering each conductor and using wiring diagrams every time you open up connections to work on them... *When you remove a cover plate on a switch for lighting and see the colors of the wires you would know which voltage you are working on... As far as switch legs in residential construction: White in a two-wire cable used as a switch leg is always to be the supply side of the leg, the switched load is to be on the Black conductor... *Although this is going to be a moot point going forward as there is now a new code requirement that a neutral be provided at every switch location... *That means three wire cables and White being the neutral... In general practice in switch circuits Black is usually constant power, only being switched if there are multiple groups of lighting being fed off the one cable -- this is useful where you might have a ceiling fan where the fan portion is controlled by the pull string on the fan or an integral remote control... *The lights on the fan would be powered by the Red conductor which is switched... This logic also applies to wiring for receptacles, where with a three wire cable you could have a switched receptacle (or several switched receptacles) in a room where the Black conductor is constant power and the Red conductor is the switched load... If only more people wired their houses with three or four wire cable they would be able to do many more interesting things later on down the road without needing to rip into the walls or snake additional wires in finished walls... ~~ Evan The guy insisting on purple for travelers may have been using 277volt lighting. Most of the 120 volt travelers I've ever seen were blue. TDD That sounds more like a European spec; brown, blue & Nope... *Just sounds like you haven't worked in many commercial or industrial facilities is all... ~~ Evan WHO, TWANG??? HE WORKS WELL IN GUITARS AND PIANOS AND SUCH..IT'S A MYSTERY TO EVERYONE HOW HE RESONATES AT ALL IN HERE :/ TGITM |
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