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I suppose everything is bigger in America! So it looks like some of the appliances could be moved on to a new 20A there, hopefully stress free. FrodoOne, are you sure it would need to be a RCBO? Wouldn't a usual Type B single pole suffice.

As promised. There's no room for another B20 on the top rail unless the busbar was extended.

Maybe the Fridge and / or boiler could be put on to the immersion circuit - it draws approx 12.4A (a 2.85kw element) through 2.5mmsq protected by a 20A, so there would appear to be room for it - but does this go against regs? They are all fixed permanent devices with switched isolator units, if...

Away now until next week, from memory they're all General Electric, box included

No I can't see it unless a lot of big electric heaters plugged in at the same time. With diversity in mind also it would be just fine. The existing 63A should be fine then, I was thinking about overcurrent protection rather than residual.. think that would be an RCBO not a RCD.

That seems like a great idea. There are currently 5x B20s protected by a 63A RCD so I could ask to have one upgraded. It's not much, should handle it. Also a great idea, pushing it though unless changing out the 63A RCD for a 80? A 25A swap for the 20A might be easiest (and cheapest!).

That's my worry :( Occasionally we have had a heater plugged at Christmas when using a lot of sockets and the breaker has tripped. But it might be a big job to remedy it. We would have to put in a new circuit and corresponding MCB, that could take some of the load. Too big a job to change to a...

It's a built in microwave though :(

Thanks for your reply! I guess it's better to put a FCU on it because if it has a problem, it won't affect the whole line I don't think? i.e if it trips for some reason, the boiler and fridge etc stay on? It is a 1000W microwave so would require a double pole FCU I believe.

Hello Everyone, I just want to make sure I'm ok adding this new socket for a microwave. I plan on putting in a single socket on a 13A fused switch and linking it as a spur from the existing radial circuit. It will be in 2.5mm2 T+E, running from a circuit which is protected by a 20A circuit...