Isolation Transformers and consumer unit RCDs | on ElectriciansForums

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P

paulktreg

Hello

A little help here would be appreciated.

I often use a 230/110VAC 3kW isolation transformer for review testing computer power supplies on 110VAC at home. My problem is that every once in a while I plug the transformer in and the ring main 30A RCD trips out. It's not every time so I presume it's happens when I plug in and the AC is at or approaching its peak. My question is can I replace the 30A breaker with a fusible wire link type cartridge (is this against the regs?) or are there less sensitive RCDs available that will solve my problem. The consumer unit is rather dated, I think it's a Wylex NN (?) with NB30 30A Type 2 breakers on the ring main.

Cheers

Paul
 
Last edited by a moderator:
Is replacing the 30A breaker with 30A fuse wire acceptable these days? A soft start transformer sounds expensive!

Can the soft start circuit be built. Any info anywhere?

Cheers

Paul
 
Last edited by a moderator:

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