The rating plate on this Buffalo rice cooker tells you everything: 2,950W at 240V. That works out at around 12.3 amps — right up against the limit of a standard 13A plug and fuse.
Most domestic appliances draw well under their rated maximum for short bursts. Commercial catering equipment is different. A rice cooker in a busy London restaurant kitchen runs at close to full load for hours at a time, every single day.
A 13A plug and socket is technically rated for that current — but only just, and only when the connection is perfect. Over time, pins wear slightly, socket faces soften under heat, resistance creeps up. That resistance generates more heat. The fuse eventually blows as a last resort. You replace the plug, it happens again. The socket gets replaced. Then it happens again.
The fuse is doing its job — but you are asking a domestic fitting to handle a commercial load. That is the real problem.
The right solution for this kind of load is a 16A industrial commando socket on its own dedicated circuit — the round blue sockets you see in commercial kitchens and on construction sites across London. Rated for sustained heavy loads, with a twist-and-lock connection that stays tight and does not arc.
For this installation in Mayfair we also added:
The circuit runs back to its own breaker in the kitchen distribution board — completely separate from the general ring main.
Keeping high-draw equipment on its own circuit means a fault or trip on the rice cooker does not take out the rest of the kitchen. In a central London commercial kitchen, that matters.
Job done. The rice cooker has run without issue since. No more blown fuses, no more melted sockets, no more emergency calls mid-service.
If you are running heavy catering equipment — rice cookers, bain-maries, combi ovens, fryers — from standard 13A sockets and getting warm plugs, blown fuses or discolouration around sockets, do not keep replacing the fuse. The socket is telling you something.
We carry out commercial electrical work across central London and the wider city — Mayfair, the City, Soho, Shoreditch, Canary Wharf and beyond. Whether it is a single commando socket or a full commercial kitchen rewire, get in touch and we will assess what is needed.
That is not a socket that just needs replacing. That is a socket telling you the circuit is wrong for the job. Here is what we did about it.
A call came in from Nathalie, a restaurant in Mayfair, central London. Their large commercial rice cooker kept blowing the fuse in its plug — and the socket face was showing serious heat damage. They had replaced the plug twice. It kept happening.
This is one of the more common commercial electrical problems we deal with across central London restaurants and commercial kitchens — and the fix is straightforward once you understand why it keeps occurring.
