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I am looking for a high voltage DC relay than can take 220 -240v DC for at least 4 hours and not over heat and burn up....any suggestions? I have been toying with hot water heater straight from my panels with about 97 or so volts at about 13 amps and using it on top of tank with good results...

I have been experimenting with this project for 2 weeks now.. I started with 24v dc heating element off my battery bank, but found I was using much to much power from my bank....So then I tried using a 120v ac element 2000w element with my solar array 250w x6 panels, 3 in series x2 in...