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I get strong bticino Domino vibes but that seems unlikely as well.

I know but inferred from the electrician‘s comments that the existing conduit is too small for another three 6 mm2 singles, which means you‘d have to chase for another length of conduit, probably 25 mm.

As far as I know the two single-phase circuit option is only used in the Netherlands but that’s more of an education assumption than factual knowledge.

It will probably work on even a 2.5 mm2/20 A circuit unless you try to put on four pots of cold water at the same time. You definitely want a dedicated circuit though and if you‘re already opening up walls I‘d go for 6 mm2.

Most of Europe had settled on 220/380 or 240/415 V 50 Hz AC for new supplies around WWI but there were plenty of legacy systems in place until well after WWII, both DC and AC with various frequencies and voltages. Electric railways in rural areas would sometimes supply villages along the line...

Sounds like a textbook example of a neutral to earth fault. Any substantial load on the same RCD causes a voltage drop on the neutral, which then causes current to flow from neutral to earth and that trips the RCD. These faults are pretty much impossible to find without an insulation resistance...

The heat generation is pretty much entirely resistive and the big problem with extension leads is lack of heat dissipation.

I‘d be tempted to go with two pendants for ambient lighting and LED battens under the cupboards to light up the work tops in front of anyone standing there. My kitchen is smaller, about 2.5x3 and I‘ve got one hanging light with glass shades and two 6 W LEDs plus under-cabinet lights, the...

Found it, Wieland GST18, rated for 16 A/250 V.

I think those modular connectors (can’t remember their name) are rated for 16 A. They’re quite popular for commercial lighting and IKEA used or uses them for modular power strips.

Don’t bother measuring, start tracing the missing earth connection. Unfortunately not the ideal time of the year to crawl around lofts trying to find junction boxes buried under fibreglass in most of Europe.

In an ideal world you‘d probably put both fused connection units onto the ring instead of running a spur cable to each of them from the socket because that saves you the hassle of having four 2.5 mm2 wires in one socket terminal. In practice that involves moving one leg of the ring from the...

The only technical arguments I can see are strain on the solid copper conductors and strain relief at the other end of the cable. In theory someone tripping over this contraption could yank on the cable hard enough to break it at the terminal in the next socket, assuming the cables run in...

I‘d think your best way to code this would be along the lines of adequate fixing of the T&E. I‘m sure it would be quite rare in reality but in theory solid copper cores could break if moved around enough.

At least the stuffing gland hopefully provides strain relief. Most times I‘ve seen setups like this there was flex with exposed cores hanging out of the pattress box. PS: that floating power strip wasn’t plugged in. A Swiss news web site tracked down an entire album of pictures from that event...

Two random ones I found...

These days you can get pretty decent battery-powered LED work lights cheap as chips. One of these can light up a whole room and last for several hours on one charge. They start around 20 quid I think.

No it wouldn’t. A radial circuit would most likely come down through sockets 1 and 2 and split at socket 3, one leg going right and one left. In fact, you‘d use considerably less copper than with a ring.

I read that as „sockets that do comply with the listed standards may be used“ although you‘re definitely right that 553.1.201 explicitly mandates shuttered sockets.

The quote on the previous page explicitly mentions BS EN 60309-2 and one could most certainly supply an entire house from a blue 63 or 100 A socket.