DIY Doctor UK DIY Forums

Posted: **Wed May 13, 2009 4:27 pm**

If your changing an mcb to an rcbo, according to the iee 17 edition wiring regulations: https://www.diydoctor.org.uk/projects/iee.htm do you have to re test the circuit?

Posted: **Thu May 14, 2009 12:58 pm**

In theory, if you changed the fuse or mcb it should be tested, so yes you do.
You will also need to do an RCD test on your RCBO
KB

Changing an MCB to an RCBO 17 edition wiring regulations