Water Heater

[H. Sharrott]

No question is stupid ? I just installed my 1st double element, 240V water heater..all ok, it works but what is used for the comon or ground wire? The tank and romax cable ??? Thanks. Howie

[Big_Jake]

The ground screw (tied to the tank) and the romex ground.

JK

[kennybs]

The question's not stupid, just the person that completed the installation and turned it on with out finding out the answer first.

kenny b

[H. Sharrott]

The little Green green screw was un-used on the old tank now the new tank..same bare ground screw. The romax conduit must be the ground ??? Thanks Jake

[H. Sharrott]

Hi Ken..The old tank had NO wire to the green ground screw, Just had a Red and a Black wire running thru a romax conduit wall box to tank. This is an apartment complex and they all seem to be like that..The heater is working ok..What say you ? Thanks. Howie

[Mark M.]

Romex is the plastic covered stuff. Greenfield is the flexible conduit made of metal and can serve as ground must it be secured with a connector to the water heater.

Mark

[H. Sharrott]

Thanks Mark...I learned something...Greenfield ? What did they call that OLD type flex cable that had the 2 wires inside wrapped in paper.the type that was always shorting out...causing fires ??? Howie

[Mark M.]

BX.

Mark