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Bear in mind that the 433V will be the nominal voltage at full-load. When TX is lightly loaded & assuming, say, 5% regulation, its going to be heading towards 260V at the TX terminals. For this reason its rather difficult to maintain the voltage at the consumer terminals using distribution...

Its not unusual to set a distribution transformer on the 433V tap (ie. -7.5% on the primary side)

From the ISKRA M750 measurement centre on our meter tails at home.... In the approx. 8 years this has been connected, its not unusual to see these kinds of variations.

To answer your original question..... of course they did. We've pretty much had 2 & 3 way switching since the day after we invented 'lectric :) Some of the switching regimes of old were very clever... over-ride switches using the other contact of a 2 way switch to 'force' a lamp ON and using a...

Interesting.... does the manual give any guidance on what can be used for how long? 16A @ 230V is around 4kW. I can't see how the vehicle battery can sustain that kind of drain for hours on end & still be driven away.......

Nah, those little switchfuses pre-date electric showers by a few decades. They contain a single porcelain BS3036 rewireable fuseholder rated at, I think, 15A max.

The MEM single switchfuse (small brown square one) is intriguing.... The WYLEX skeleton consumers unit with its built-in meter cupboard post dates the MEM by a good 10 years... whats it doing in there?

Yes. In some Nottinghamshire Estates it was strung between the chimney stacks of the semi's. zig-zagging its way down the street. I think the majority of the street furniture is long gone & those sections of cable that remain are falling into disrepair - just like the section on your house.

That looks to me like a Rediffusion Cable TV distribution cable. Rediffusion was a cable TV distribution system that existed long before the likes of VirginMedia. It started as a cable radio service in the 1920s and then TV in the 30s. I think the system ceased operation in the 1980s The...

Not necessarily high current devices. Alot of modern consumer electronics use switch mode power supplies (SMPSUs) as the device to turn the mains into low voltage DC. These have a rectifier & a large capacitor on the front end. Each of these can easily draw several tens of amps for a few cycles...

Care you explain how you think that's possible?

I agree with that, to a point. I think that is what the lower knob is doing - reducing the flowrate = less flow through the heater = greater temperature rise for the same power. However, I think that the upper knob allows the selection of either no elements (ie. cold flow), one element (often...

When a current flows through a resistor, the resistance causes power to be dissipated. This power is I*I*R and will cause the resistor to get warm. So, to answer your question, yes, it should get warm. As to whether its "too warm", well a resistor has a power rating, 0.6W, 1W, 2W are common...

True enough ....... unfortunately the OP has 32A sockets....:p That supplier has some rather..... interesting leads in his collection. One is a 32A 3P+N+E plug to 16A 3P+N+E in-line socket plus 16A 2P+E socket, without any inline protection. And the infamous 32A to 2 x 16A unfused splitter...

MK did make a 13A square pin socket that fitted onto a round BESA box back in the 70s' ... I'll try & find a pic. They also made a 5A round pin versions &, I think, a 15A round version too.

Indeed. Its quite worrying how some believe that the earth fault current 'disappears' into the general mass of 'earth' and don't appreciate that it MUST pop out again at some point & return to the 'source' ie. the supply transformer. I've had some very long arguments with others trying to get...

So that you can isolate it & drain it down in winter so that it doesn't freeze.

Probably not. My experience of these is that the trip coil is very much 'short time rated'. If it is powered, 'wanting to trip', for any significant length of time then they tend to burn themselves out. Consider that in, normal operation, once the device has tripped then the 'problem' has gone...

Unless it is something transformer based. If the OP is measuring the DC resistance of a small transformer, its AC impedance will be much higher & hence pulling nothing like 330W at 50Hz

How do you create hot water?