Tim Howard

B32 MCB -> Socket -> Unfused RCD Plug -> flex -> 60 Amp MCB -> SWA -> CU -> B32 breaker -> ambitiously loaded ring circuit peaking at...

The builder: 1 - removed some tails from a full 5 way Henley block to make room to power his new CU for the extension 2 - cut the end...

Thanks - trouble is I did that last time! I don't think I have any old style left now.

I had a similar problem to solve with an 18 gang MK grid switch about 5 years ago, the cost of completely replacing that for a couple of...

99% certain the new front plates don't fit the old back boxes as the old boxes are smaller.

I think the new stuff is compatible with the old. If I'm wrong someone will soon say 😀 If you do change the surface boxes, I would just...

I'm sure someone instantly knows... I have an old style 2 row mk grid box, with 3 switches on each row...the old sort with the metal...

Agree , try the above first,

monitor one phase amperage logging unit meter i use a the mooshi !

I used to work for the MOD (RAF civvie) repairing avionics,,, when we filled out the paperwork we never wrote “calibrated” as our test...

Tong test (Clamp on amp meter) on the 3 phases one at a time going to the motor, they should be equal and not above the name plate rated...

Check the fan on the back of the motor is intact and not blocked, i.e. it is generating enough cooling air for the motor.

Thanks for suggestions. Yes it sounds like … a motor! I’m not sure yet how easily I can get to the other two but will see if I can...

check your supply voltage. check all contacts etc. bad connection and you'll get similar to running without a phase try turning the...

Check connections are sound at the relay, these are thermal in operation so lose connections can cause issues. Check the FLC of the...