I just had an electrician ask me if he could install #14 cu. conductors for a pool motor and I said yes but he would need a #12 cu. EGC. Is everyone on this forum in agreement? (ha ha) I know the rules that say the GEC doesn't have to be larger than the circuit conductor (250.122(A)) but there apearently isn't any rule that would let us run less than a #12 cu. GEC for a pool motor. Check 680.21(A).
Hello, I noticed that you are asking about using #14 wire on a pump motor. I dont see any great benefit/savings using #14 for this particular application (unless you are doing a lot of them) but...since you seem to be splitting hairs...why would you mention #14 CU? Do you ever see #14 AL in a raceway?
Re: Conductor size for pool motor.#92910 04/15/0509:57 PM04/15/0509:57 PM
I guess I didn't have to specify cu wire because I don't think they make alum. wire in that gauge. Don't forget, we have a lot of very exacting people on this board so you have to choose your words carefully. And, I agree, there's not much of a savings in using #14 wire for the branch wiring and #12 for the EGC. That's what I told the contractor. If he ends up using #14 with a #12 EGC, I can't quote a violation.
Re: Conductor size for pool motor.#92911 04/15/0509:59 PM04/15/0509:59 PM
#12 cu is the smallest EGC you can use anywhere in a pool as far as I know. In fact I have some left over SJTW wet niche lamp cord that is 14ga with a 12ga ground. I'm not sure what I am going to do with it but they whacked about 60-80' of a 100' cord for 3 lights and it was in the dumpster. It just looked too good to throw away. (I wasn't working there, just visiting my favorite builder)
Re: Conductor size for pool motor.#92912 04/16/0505:47 AM04/16/0505:47 AM
I wouldn't accept it. Me the EC and U/L would have to go round and round. There may be some places where I would accept a U/L stamp that appeared to be a code violation but it would not be in an underwater light. My first guess would be this was some Chicom knockoff of a U/L product, complete with counterfeit listing
Re: Conductor size for pool motor.#92915 04/16/0503:03 PM04/16/0503:03 PM
What code would you cite to require a #12 EGC in the cord?
You are only required to install a #12 or larger EGC to the junction box where the cord terminates. The EGC in the cord must not be smaller than the supply conductors and not smaller than #16. See 680.23(B)(3)
I have never seen a wet niche fixture cord that has a #12 EGC.
[This message has been edited by caselec (edited 04-16-2005).]
Re: Conductor size for pool motor.#92916 04/17/0502:19 PM04/17/0502:19 PM
"(3) Equipment Grounding Provisions for Cords. Wetniche luminaires (lighting fixtures) that are supplied by a flexible cord or cable shall have all exposed non–currentcarrying metal parts grounded by an insulated copper equipment grounding conductor that is an integral part of the cord or cable. This grounding conductor shall be connected to a grounding terminal in the supply junction box, transformer enclosure, or other enclosure. The grounding conductor shall not be smaller than the supply conductors and not smaller than 16 AWG.
680.23(B)(3) this section spells it out pretty good .