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Tankless water heater - 2 X 40a #164058
05/24/07 02:53 AM
05/24/07 02:53 AM
aldav53  Offline OP
Joined: Aug 2001
Posts: 545
Chandler, AZ USA
Residential home - I'm wiring a tankless water heater that calls for 2 - 40 amp 240 volt ckts. It has 2 separate heaters. I was going to run 4-#8's and 1-#8 ground to a junction box on the flat roof (splice there) of the house then go in with 2-#8 NM's into the attic then down to 2 disconnects then to the tankless water heater.
Would it be legal to run 2-#4's instead to the junction box then split off with the 2-#8 NM's to the water heater (2 ckts). Probably be better to keep both cicuits separate all the way.

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Re: Tankless water heater - 2 X 40a [Re: aldav53] #164061
05/24/07 05:50 AM
05/24/07 05:50 AM
Roger  Offline
Joined: May 2002
Posts: 1,716



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