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No GFCI will save you on the secondary side of a transformer. My point is: working with standard 120/230V requires just following codes and guidelines. Tinkerin
by kosma 8y ago
No GFCI will save you on the secondary side of a transformer. My point is: working with standard 120/230V requires just following codes and guidelines. Tinkering with HV in non-standard setups requires understanding of how and why.
- zaarn 8y agoThe secondary side of a transformer can be a lot safer if there is no potential to ground. If there is the GFCI will trigger. But yes, working with codes and guidelines is the best option here.
- jacquesm 8y agoYou might get silly and insert more than one hand into a working device.
- zaarn 8y agoI don't get silly above 50V. edit: also, in case you put two hands in a device, it won't matter much if it's on the other side of an isolating transformer or not. The GFCI might not trigger in this case.
- jacquesm 8y ago> also, in case you put two hands in a device, it won't matter much if it's on the other side of an isolating transformer or not. The GFCI might not trigger in this case. That was my point.
- bluGill 8y agoThere is always potential for ground. The secondary side of the transformer has a much more dangerous potential: a unknown fault puts something at ground, and then thinking there is no ground you touch ground and the other side. Normally that would be harmless, but since there is an unknown ground it is deadly. In many ways mains power would be safer if there was no ground, and a lot cheaper. However a couple failure cases are even worse without ground, and they are the type you only find out about when somebody dies. Thus we put ground in houses.