Quote:
Originally Posted by 908/930
Two 40A single pole vs one double pole 40A breaker, not the proper way of getting 220v, still rated at 40A though. Pretty sure to pass electrical code they need to be joined together, right now if one circuit tripped you still have 110v 40A going to the dryer, not sure what that would do.
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I worked on a lot of systems wired like that back in the day, though they were all fused. I don't think I ever saw one with breakers wired that way. The usual failure mode was the heating elements, which used both circuits to get 220, would overheat and sag until they touched the housing. They would short out and blow one of the fuses. The motor, which was powered by one of the 110 circuits, would keep running. It would turn the drum all day, but no heat. I cannot explain why it would usually blow the fuse that was
NOT powering the motor, but it seemed to do that more often than not.