Jim R. · 4106
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You may have noticed that fusing a 220V circuit is half of the fusing requirement of 120V. 220V circuits balanced voltage circuits, whereas 120V circuits are single ended.
Now you've sparked my interest, I was unaware that 220V was produced any other way than as a balanced circuit. Could you explain in what case(s) an unbalanced 220V system is used? Thanks.
I thought using 2 fuses was dangerous, at least for the usual non balanced wiring - you wouldn't put a fuse on the neutral and hot lines. In your balanced case, seems like the same danger exists. If only one fuse blows, you'll still have a live 60Vac running in the chassis.