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Registered
Join Date: May 2001
Location: Peoples Republic of Long Beach, NY
Posts: 21,140
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220 single phase has two 110s and a common. Your 220 house panel has one side of breakers for one leg of 110s and the other side of the panel for the other leg of 110s. The panel 220 breaker bridges both buses.
The panel has a common ground buss. This is where the 220 receptacle common goes. The panel ground buss should also be connected to an "earth" copper rod stuck into the earth. Details can get more elaborate.
you can also install a small industrial surge protector across the two panel 110s for lightning protection. It fastens to the panel and it's not large. It's about $50.
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Ronin LB
'77 911s 2.7
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