I will do but it will have to wait for the next power cut (we had a 6-hour beauty yesterday when the network infrastructure caught fire) or my next late night or early morning.If you could take out 3 mcbs and the rear coloured part nearest the switch.
See if the one to the left of the switch has an extra cut out for the tab to go into.
If it does, could you see if the one to the right of the switch does too. Thanks
JohnD has a photo.I actually Meant JohnD, but yes you could do that as well
I don't think I said otherwise, albeit my terminology may not be correct.It doesn't work like that.
The number and rating of MCBs connected does not cause power used to increase or decrease
OK.It doesn't work like that either.
An RCD does not trip on current usage.
I disagree. He would certainly have told me if my hunt for a B40 was pointless.he doesn't "passively confirm" that. He did not answer your question. he just said they are no longer offered. Your CU might have been designed to accept one or more 40A MCBs; this would be seen by the presence of (I think always only one) MCB-socket that was larger than the others and was capable of accepting the intentionally-larger (green?) 40A MCB used at the time. I don't see such a position in your pics.
At the time your CU was made, the MCBs were a different design, with two push-buttons. Yours has the (much) later switch type and perhaps when they were offered the B40 no longer had the protrusions. B40 were always very rare on Wylex Standard CUs.
Consumer units having rewirable fuses can continue to provide satisfactory service (cover removed for illustrative purposes)
If you hunted through my loft you might find one.He would certainly have told me if my hunt for a B40 was pointless.
Correct - without that, overheating and failure is inevitable.I seem to remember a stronger clip to hold the MCB/Fuse over 30 amp.
Thank you, I think these are your pictures, showing switch 60 amp rating,Correct - without that, overheating and failure is inevitable.
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