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Post by tyrednexited on Dec 5, 2020 20:28:25 GMT
...odd those Germans. Vorsprung durch Technik and all that, but some curious practice.
German built motorhomes, for instance, use quite a bit of 230v spec flex cable to run 230v circuits. They also use some of the same in the 12v circuits (non-flex in either case not being sensible in moving vehicles).
The 230v circuits are (generally) wired conventionally, with Brown as live. The 12v circuits are (also generally) wired with Brown as earth and Blue as live. ??!
It has caused some interesting events when people have augmented the 12v wiring (which happens quite a bit in the motorhome fraternity as accessories are added).
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Deleted
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Post by Deleted on Dec 5, 2020 20:36:54 GMT
Plumbing is also a similar load of balls. Grey water, sewerage when you get to extra bathrooms what's the difference ? Until someone starts using wet wipes mixed with dishwasher output  |
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Deleted
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Post by Deleted on Dec 7, 2020 8:59:43 GMT
Only when I have to, unless sparky has some other Edinburgh connotation like fud ? I had a FIAT Coupe with a FUD number plate which got some smiles in Edinburgh !  Once I got completely confused with a dual set of switches with dimmers in Miss pre-BPG flat in Edinburgh. Took me a few hours to work out what the flip was going on with them and I didn't have a meter for that. The registration of my second Alfa 33 ended in DUD. I really should have taken the hint. It was that car which snapped its cambelt and took the engine out on the M25 in a monsoon, on the way to the garage which was going to replace the cambelt.... |
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WDB
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Post by WDB on Dec 18, 2020 10:32:01 GMT
The phrase ‘my second Alfa’ suggests that taking hints is not your strong suit.
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Post by bromptonaut on Dec 19, 2020 15:37:08 GMT
Found myself last weekend looking at a similar set up to that pictured by TnE.
I'd decided (finally) to replace a failed shaving light over the basin in our en-suite. Some safety interlock between the diffuser and the bulb had packed up - charged shaver etc but no light.
The original had been installed by the builder and the muppets to whom the electrics were subbed had initially wired it through the same switch as the fan which was on a two gang with the ensuite's main light; I'd have had to leave that fan on to charge a toothbrush. After a complaint to the developer they changed it so it was on a live feed and went on/off on its own switch and the socket was live 24/7. They presumably achieved this via some magic in the pattress box.
New light should have been a simple swap but whilst the old one was double insulated the new one required an earth. Although there was an earth core in the cable I was cautious enough to check it for continuity; there was none!!. Turned out to be relatively simple to find the other end of the cable and strip it back to expose earth and attach it to the earth grubb in the box. The rest of the wiring was a spaghetti of red wires; even after studying it for half an hour I still cannot work out what's connected to what. However I now have a working shaver light and the two switches on the wall outside still control (a) main light and (b) fan.
As a bonus the new light has a green tell tale LED to indicate voltage selected for the shaver socket. It's just bright enough to obviate the need for a bathroom light when taking a leak in the small hours.
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