Switched power supplies and ON-OFF switches


I have one of those switched power supplies. The 120V side has terminals L, N and G. “G” is ground.

Should I add my power switch to the L side or the N side?

I think of of L and N are grounded so it needs to be the one that isn’t. Right?

4 thoughts on “Switched power supplies and ON-OFF switches

  1. Close enough !. L actually means Line (phase). In multiphase supplies. you can have L1 L2 & L3, respectivly for each phase.

  2. always the LIVE side must be switched as you can get a shock when you are working on it if still plugged in

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