So I was watching David Poz on YouTube and saw his hot water video and decided to try building a similar system to preheat my spa. So I bought 4 used 305w Sunpower Solar Panels (~60v at ~5.9amps) @$90 each, a Camco 04382/04383 1500W 240V Universal Flange Water Heater Element - High Watt Density @$11, a used Murray ghn321nw 30 amp 240vac/250vdc disconnect switch with fen-r-30 fuses @$10 and some InstallGear 8 Gauge wire @$33. I got it all installed (panels in series for ~240vdc @ ~5.9 amps) At the terminals when the disconnect switch is in the off position, but when I throw the switch to the on position there’s nothing...any ideas why that is? Are the fuses interfering somehow? I checked for continuity before connecting the solar panels to the disconnect switch and there’s no resistance so...?
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