Plumbers & electricians in Walworth

Walworth Road runs south from the Elephant and Castle towards Camberwell, and almost everything either side of it is somebody’s flat. There are surviving Georgian and early Victorian terraces on the quieter squares, the Victorian tenement blocks of the Pullens buildings with their workshop yards, large postwar council blocks from the middle decades of the last century, and, since the Heygate came down, a good deal of new build around Elephant Park. Kennington Park lies off the western edge, where SE17 hands over to SE11.

Buildings that different share very little architecturally, but they share the thing that matters here. A flat is one part of a larger building, and the supply feeding it was sized by somebody else, long ago, for the way people lived then. Whether the block went up in 1830 or 1968, your flat gets a share of what arrives at the building, and every new appliance has to live inside that share. It is also why a boiler repair in Walworth, a new circuit and a blocked drain in Walworth end up being the same week in the same building.

Why a bigger electric shower is not a straight swap in a Walworth flat

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An electric shower is not really a bathroom fitting, it is one of the largest fixed loads in the home. It heats water as it flows, so all of that energy comes down one cable in the moment you stand under it. Divide the rating by the voltage and you get the current: at 230 volts an 8.5 kilowatt unit pulls roughly 37 amps, a 9.5 about 41, and a 10.5 is up near 46. That is more than a whole small flat once drew with everything running. The shower needs its own circuit, its own protective device, a double pole isolator and cable sized for the run, and the older the building the less likely all of that already exists with room to spare.

What people actually notice has nothing to do with electricity. The shower is fine in August and feeble in February, which is exactly what a fixed heat output does when the mains water arrives several degrees colder, because the unit slows the flow right down to reach the same temperature. So they buy a bigger one. Sometimes it will not accept the existing cable. Sometimes it goes in and works, and then the board trips, or things only fail when the oven and the kettle are on together. In a block still running an old fuse board with no spare way, there may be nowhere sensible to put the circuit at all.

The honest way to answer it is to look at what comes into the flat before choosing a unit. That means the rating of the main fuse, the meter tails, the earthing arrangement, whether the consumer unit has a free way, what the other circuits already demand, and how far cable would have to travel to the bathroom. In a block the intake often sits in a communal cupboard, and the main fuse belongs to the network operator, so raising it is a separate job on its own timescale and is not always granted. Quite often the sensible outcome is a smaller unit the supply will comfortably carry, or leaving electric heating of the water alone and running a mixer shower off the boiler or cylinder, which in a lot of these flats gives a better shower than any rewiring would.