Why could my mains RCD be tripping on higher rated MCBs

Linksy5 · Jul 7, 2017

Hello
Looking for advise please.
Our mains RCD switch 60A 30mA MK LN 5760 is tripping when either one of my larger mcbs is turned on.
- 32A shower
- 30A sockets
- 30A cooker
I turned every breaker off and individually turned them on. All three mentioned above individually trip the mains RCD.

Andy™ · Jul 7, 2017

N-E fault most likely. unplug everything and try again. if it still doesnt work them best get someone who knows how to fault find

ProDave · Jul 7, 2017

Another vote for N-E fault. The more load that is drawn (from any source) the more the leakage will be and the more likely it will trip.

A competent electrician will find the fault easily.

Why could my mains RCD be tripping on higher rated MCBs

Help Support Talk Electrician Forum:

Linksy5

New member

Andy™

©Resident Geordie™

ProDave

Twatt ™

Similar threads

Latest posts

Why could my mains RCD be tripping on higher rated MCBs

Help Support Talk Electrician Forum:

Linksy5

New member

Andy™

©Resident Geordie™

ProDave

Twatt ™

Similar threads

Latest posts

Join the conversation!

Join today and get all the highlights of this community direct to your inbox. It's FREE!