dump load water heater

[mahendra]

hi i have read that an ac (120/240 vac) water heater can be used on the classic as a dump load. is this true if yes how can it be done.

[TomW]

hi i have read that an ac (120/240 vac) water heater can be used on the classic as a dump load. is this true if yes how can it be done.

Yes, several of us have / are doing this.

You can simply drive a solid state relay with AUX1 to control the AC to the water heater.

I actually used a relay on mine switching on at a high voltage and off at a low voltage set point.

Look up posts by Chris Olson he posted extensively on the subject.

Good luck with it.

Tom

[Halfcrazy]

Yep I will echo what Tom said. I am doing the same thing here with a 40 gallon water heater and a solid state relay driven from Aux1 on the Classic.

Ryan

[ananthapriya]

 I am considering using a 50gal water heater as a dump load for my PV and wind turbine. The wind turbine must have a load on it at all times. The combined PV and turbine could be 40A at 48V nominal. I was going to use a Tristar controller as the dump load controller. One of the elements in the water heater would be replaced with a 48V element. The wind turbine has a controller with dump load and will use that as a failsafe.