Electric Water Heater

tom418August 13, 2013

In a new water heater installation, what method is best to use to run to C/B panel?

Can I use a short vertical length of EMT to run 10/2 romex in (and can I remove the jacket while the romex is enclosed)? The EMT would be no longer than 5 feet in length- to run from top of heater to joist above. I just don't want anything "loose" above heater.

Or, Use armored cable from top of heater to panel? Would this meet code? What about securing it?

I've seen pictures of romex from heater to panel. Is this allowed?


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Type NM in conduit for protection must have the outer jacket intact.

    Bookmark   August 13, 2013 at 9:52PM
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Use NM, MC or flex with thhn inside. Do not use conduit to connect to the water heater. If you do, good luck getting the conductors pulled into the teeny-tiny wiring compartment.

    Bookmark   August 13, 2013 at 10:34PM
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Thanks bus_driver. I was looking at how my basement lights were done when the house was built 13 years ago: One 3 way switch by the Bilco door is in a metal 4x4 box, with conduit running to the ceiling. Romex comes out of the conduit on top(through a cable clamp) and goes to the box at the top of the stairs. There was NO jacket inside the conduit. I was going to follow suit. Glad I asked here.

btharmy: I'll follow your suggestion and use MC as I've seen this in many illustrations. Thanks for the warning against conduit.

This post was edited by tom418 on Tue, Aug 13, 13 at 22:57

    Bookmark   August 13, 2013 at 10:56PM
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