Subdood
Photon Wrangler
Hey all,
We have a 3600W 30 gallon water heater which runs on 240VAC. I have a EG4 6500 single phase inverter and would like to run the water heater off of 120VAC during sunny days as a load dump for the solar after it's done charging up the batteries. If it is a sunny day, they're usually recharged by noon or so. So I'd like to use any excess solar to heat the water.
The WH runs on 12awg wires into a 20A DP breaker in the house panel. I have an idea of using a 20A DPDT switch to go between 240V grid and 120V inverter power. The switch would be mounted near my critical loads panel that the inverter powers. I realize that at 120V the tank element would only put out about 900W, but that's not a big deal during the day if there's enough sun.
The circuit would look something like the enclosed pic. The switch would be a 20A DPDT light switch. It would switch the two water tank inputs between the 120V inverter sub panel, and the 240V house panel.
Think this would work? Would it be safe? Code compliant?
Thanks
We have a 3600W 30 gallon water heater which runs on 240VAC. I have a EG4 6500 single phase inverter and would like to run the water heater off of 120VAC during sunny days as a load dump for the solar after it's done charging up the batteries. If it is a sunny day, they're usually recharged by noon or so. So I'd like to use any excess solar to heat the water.
The WH runs on 12awg wires into a 20A DP breaker in the house panel. I have an idea of using a 20A DPDT switch to go between 240V grid and 120V inverter power. The switch would be mounted near my critical loads panel that the inverter powers. I realize that at 120V the tank element would only put out about 900W, but that's not a big deal during the day if there's enough sun.
The circuit would look something like the enclosed pic. The switch would be a 20A DPDT light switch. It would switch the two water tank inputs between the 120V inverter sub panel, and the 240V house panel.
Think this would work? Would it be safe? Code compliant?
Thanks