Yes certain UL standards have accepted the Lt Blue for the neutral. But therein lies the conflict. The NEC states that the neutral (grounded conductor) must be white or nat. Gray. Has there been an acceptance by the NEC for the blue neutral??
-----Original Message----- From: [email protected] [mailto:[email protected]] Sent: Thursday, December 02, 1999 7:25 PM To: Rich Nute Cc: Mavis, Robert; [email protected] Subject: Re: AC Mains Color Coding Rich: If my memory serves me right, then UL and CSA have accpted brn - lt. blu - grn/yel several years ago. Sorry, but I don't see a reason for this uproar. Bogdan. Rich Nute wrote: > Hi Robert: > > Here's a table that should explain the use of single- > phase mains wiring colors: > > -------------------+--------------CONDUCTOR---------------+ > |-----Europe-------|---North America---| > | L N PE | L N PE | > -------------------|------------------|-------------------| > | | | > Within a product | n/a n/a Y-G | n/a n/a G-Y | > | n/a n/a G-Y | n/a n/a Y-G | > -------------------|------------------|-------------------| > | | | > Cordage | Bro Blu Y | n/a W G | > (connecting the | Bro Blu Y-G | n/a W G-Y | > product to the | Bro Blu G-Y | n/a Blu G | > building) | | n/a Blu G-Y | > | | ((Blk) W G) | > | | ((Bro) Blu G-Y)| > -------------------|------------------|-------------------| > | | | > Within a building | Bro Blu Y | (Blk) W G | > | | (Blk) W G-Y | > -------------------+--------------------------------------+ > > where: n/a = not applicable (no rule) > Y = Yellow > G = Green > Y-G = Yellow with green stripe > G-Y = Green with yellow stripe > Bro = Brown > Blu = Blue > Blk = Black > W = White > ( ) = by convention, not by rule > L = Live or Line > N = Neutral > PE = Protective Earth (grounding) > > References: > Cords: NEC Articles 200(c), 400-22(c), 400-23. > Buildings: NEC Articles 200-7, 210-5. > Products: IEC 950, Sub-clause 2.5.5. > > Best regards, > Rich > > --------- > This message is coming from the emc-pstc discussion list. > To cancel your subscription, send mail to [email protected] > with the single line: "unsubscribe emc-pstc" (without the > quotes). For help, send mail to [email protected], > [email protected], [email protected], or > [email protected] (the list administrators). --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators). Note: If you are not the intended recipient of this e-mail, contact [email protected] or call (559) 292-1981. Information contained may be confidential. Dissemination, distribution or copying of this e-mail is prohibited if you are not the intended recipient.
