In article ,
Tough Guy no. 1265 wrote:
Why do builders have isolating transformers then?

Generally, because the tools are 110v.

Going back years in TV studios, any domestic equipment or musical
instrument that needed mains power was fed via an isolating transformer.

These days, using an RCD provides the same safety requirement, and at
far less cost.

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*The last thing I want to do is hurt you. But it's still on my list.

Dave Plowman London SW
To e-mail, change noise into sound.