URGeNT wiring the disconnect to 3000 watt water heater

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Pyro71

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Hi, I'm replacing oil water heater with 3000 watt electric. square d main panel. bi pole 20 amp breaker. 12/2 wire to a eaton dp221ngb 30 amp disconnect. I have 118v on both conductors going in disconnect but no power coming out. two 15amp glass type p fuses are in the disconnect. Why is there no power on the out? fuses tested good. Thx
 
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Pyro71 said:
Hi, I'm replacing oil water heater with 3000 watt electric. square d main panel. bi pole 20 amp breaker. 12/2 wire to a eaton dp221ngb 30 amp disconnect. I have 118v on both conductors going in disconnect but no power coming out. two 15amp glass type p fuses are in the disconnect. Why is there no power on the out? fuses tested good. Thx
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Tank is 240v
 
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