Pool pump circuit- why in conduit?

[pierre]

Re: Pool pump circuit- why in conduit?

Section 680.21 Takes a little extra reading to fully (if that is possible) understand it.
In dwellings, the wiring methods for branch circuits 'INSIDE' the building [680.21(A)(4)] can be a 'Chapter 3' method. Once the wiring 'leaves' the building, the installer has to follow 680.21(A)(1). This only permits a raceway type method or MC type cable listed for the location. So you cannot use UF cable to feed it outside.
Why do they only permit these types of wiring methods in my 'guess' would be their concern about Chlorine and the Protection of the EGC. If one was to locate the year this decision was made, then you could read in the ROP or ROC the substantiation of the decision.

Pierre

 

[bennie]

Re: Pool pump circuit- why in conduit?

Conduit underground, makes the situation worse. Clorine in the conduit is a disaster. Should we install a seal off?

 

[flightline]

Re: Pool pump circuit- why in conduit?

Bennie,

With respect to your request of Tom and the NEC Digest article, here's a link. It only gives a blurb, but I believe that it was written by a member that visits this forum, John M. Caloggero. I hope that I'm refferencing the one Tom intended.

 

[pierre]

Re: Pool pump circuit- why in conduit?

Bennie, I agree that chlorine in the conduit is worse, not only for the EGC, but all the conductors. I never thought about it, but a seal such as duct seal would not be a bad idea.
My train of thought about the conduit was for physical protection.
One of the benefits of this forum is that all the input by others, stretches our thought process beyond our normal view. Whether or not I agree with some ideas here, I always think about them.
Because I do not agree with them does not make them wrong either. Sometimes I am slow to change my mind, thats all. Also it is hard to picture all the different situations that can occur in this vast country of ours. The variety of environments across the country we all deal with is staggering.

Pierre

[ July 17, 2003, 12:14 PM: Message edited by: pierre ]

 

[russ]

Re: Pool pump circuit- why in conduit?

NEC 2002 680.21 does seem to lead you to believe that the pool receptacle underground wiring is required to be in a raceway.

NEC 1999 and 2002 680-10 makes me think, that you only have to be in a raceway, if the underground wiring is within 5ft of the pool or under it.

The code I use is pretty much the same as the 99 NEC.
I've been allowing UF to be used for pool receptacles. I think by the way it's worded (or lack of wording) in the 99, I will continue to do so.

Russ