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.
Quote from: mahendra on July 07, 2013, 08:07:18 PM
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
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
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.