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millipede 11-22-2006 06:19 AM

Underground Wiring
I'm having a pool remodel done and while the ditch for the plumbing is open, I thought I should run an electrical conduit along the same length of the lot. Since I pulled out a totally rotten galvanized one, obviously I would go to plastic. What can I do to drain the condensation in the underground conduit, or should I run underground cable instead? The whole length will be covered by a concrete deck, so I only have one shot to do it right.

Bonus 11-22-2006 10:35 AM

The sparkys will answer your elec. ?

I suggest putting a pipe with a piece of string in it for future use. You can pull new stuff through in the future that you haven't thought about (or hasn't been invented yet). Any time I dig a ditch I do this and it has saved major work when the customer has wanted to upgrade or add something in the future for pennies right now.

concretemasonry 11-22-2006 12:44 PM

Forget about trying to drain condensation, leakage, etc. and assume the area will be wet when you select your conductors.


mdshunk 11-22-2006 05:19 PM

Do not worry about condensation in underground conduits. It will happen, without regard to what you do. You pull wet location rated conductors in undergroud pipe anyhow. DO NOT bury a cable without conduit. It will fail in time. Bury a nice sized conduit, and rest easy. Burying a cable under a concrete pad is akin to shooting yourself in the foot. Cables and conductors to fail in time when underground. If you have a conduit, it's as easy as pulling the old one out and pulling the new one in. Install a poly rope in that conduit if you're not going to use it right now. It will be there for when you do if you tie it off at both ends.

troubleseeker 11-24-2006 10:00 PM

Do not run cable unless in in a conduit. You will regret it in a few years. Absolutely run at least two unused electrical conduits under the concrete. If you don't have any place else to go with them now, just cap them off once beyond the concrete.The same for a water supply line, and a couple of pvc pipes that can be used for irrigation supply. Although I have not used them all yet, when I installed a pool at my house, I ran three extra electrical conduits, two copper water lines and three pvc lines for irrigation zones. Like you said, there is only one chance, and that is now.

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