Just to be clear, when I suggested they should be harmonized, I didn't mean according to polarity, I just meant the sizes would each be coloured the same across Europe or the world.
Thanks all for the advice! I went for
Deutsch Farbschema Ferrulen in the end (had to look that up!) as the 1.5 and 2.5 are red and blue respectively, the same as our butt splices.
Lol, should have guessed this one would get political! Personally I don't like any political leaders, and as for civil servants...
I'd always assumed our red, blue and yellow butt splice crimps were a harmonized standard (never really thought about it). But now I do think about it, maybe it's...
Hi Folks
TLC have bootlace ferrules in French or German colours. Is it legit to use these in the UK? If so, is either preferable and why? And why have these not been harmonized?
Look at that. Notice anything odd? Where is the test button? I can tell as I bought a couple the other day. It's right under the switch and while I haven't fitted them yet, I'm pretty confident pressing said button will result in a painful whack on the finger from the switch! Come on Wylex...
Yup second hairy. On the primary I'm just connecting it to its own circuit consisting of a 6A MCB and very short length of 1.5mm T & E. The MCB will protect the cable and the transformer can look after itself.
What would the symbol look like? Is it in the regs book anywhere (just had a quick look in the index and can't see anything about impedance protection).
I guess I could try to measure I<sub>sc</sub> with my MFT. Not sure if it'll work at 8V but worth a try to see if I can save spending money/time buying fuses and holders. I guess I should do this anyway to make sure I<sub>sc</sub> does not exceed the breaking capacity of the fuse I buy, though...
Just what I was worrying about. Only the secondary wires are not as easy to replace as a fuse, and nor are they enclosed to prevent them damaging surrounding materials like a fuse.
OK thanks, I'm just trying to imagine what would happen in the event of a short circuit. Could this not lead to overloading of the bellwire and/or transformer in the absence of any protection? And why do at least some of the old transformers have fuses?
Thanks for all your replies folks, you've got me wondering now. Thought I remembered reading (perhaps on here) that bell transformers have to have it, plus the old one I've removed has a couple of cartridge fuses visible when the cover is removed. But now I come to think of it as it's a single...
Hi Folks
I bought one of these Door Bell Transformer | Stevenson Plumbing & Electrical Supplies - https://www.stevensonplumbing.co.uk/door-bell-transformer.html?gclid=EAIaIQobChMIwLOp8p7A3QIV7grTCh3TzQvbEAkYAiABEgIxmvD_BwE as it's SELV and supports illuminated pushes, but can't find any...
Hi, yes, kinda crazy really IMHO, exactly the same thing done to different standards according to who's doing it. And I wonder how the poor sole doing an EICR is supposed to know if the isolator was fitted by the DNO or a regular spark. Hay ho.
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