All About Circuits

Low voltage AC power source

DGElder

DGElder

Joined Apr 3, 2016
351
crutschow said:
Not true.
It's the neutral of the standard mains outlet being connected to earth ground that is the electrocution danger.
The isolation of neutral from earth ground that's performed by an isolation transformer is what provides safety from electrocution in case of the hot wire being touched while being in contact with earth ground.
Isolation of the safety ground, which is connected to earth, is not a factor in that protection.
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You are correct, but if, in your DUT, a connection to either side of the secondary is purposely or accidentally in contact with the pass through ground then everything connected to the other side becomes a hazard to anyone or any instrument providing a path to ground. Using a two prong plug on my unit, as I prescribed, provides complete isolation.
 
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