09:18AM | 07/27/07
Member Since: 07/26/07
1 lifetime posts
I have a hot tub that I have added solar heat and I am in the process of adding some new wiring ( remote heater switch, ozonator and circulation pump).

My heater is 220v 5.5kw with only a BLACK and RED leg. It is bolted to the outside of my hot tub controllers' metal grounded box.

My Question is can I split one leg (black or red) with a relay and not have power going through my heater coil USING POWER?




12:19PM | 07/27/07
Member Since: 04/25/05
1915 lifetime posts
I am not sure what you are asking.

Bur for CONTROL of 240v loads you only need to break on of the legs.

But you still need a disconnect that will break both legs for service and safety.


01:53AM | 08/30/07
Member Since: 08/27/07
23 lifetime posts
im not totally sure what your wanting to do, are you wanting to know how to turn your heater on and off with a relay, but dont have a neutral for the relay coil? if that is what your wanting to know, just get a relay or contactor with a 240v. coil or you can set a small transformer and run controls off of 24 volts....


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