General > General Technical Chat
Grumpy rant #783
coppice:
--- Quote from: Gyro on October 14, 2023, 09:49:57 pm ---Why would the government mandate it? For the reasons listed above, it makes no [Edit: practical or implementational] sense.
--- End quote ---
There have been a lot of things in the UK wiring regulations that only seemed to be there to force people to buy stuff.
themadhippy:
--- Quote ---There have been a lot of things in the UK wiring regulations that only seemed to be there to force people to buy stuff.
--- End quote ---
The regs aint retrospective (nor statutory) so if your told your old wylex rewireable fuseboard is illegal then the smell of bullshit is in the air.
TimFox:
--- Quote from: Connecteur on October 14, 2023, 08:39:34 pm ---If the government mandates it, all new wiring will require it.
--- End quote ---
Therefore, all good men should strive to keep the government from listening to twerps like you about what to mandate.
AVGresponding:
--- Quote from: themadhippy on October 15, 2023, 12:37:56 am ---
--- Quote ---There have been a lot of things in the UK wiring regulations that only seemed to be there to force people to buy stuff.
--- End quote ---
The regs aint retrospective (nor statutory) so if your told your old wylex rewireable fuseboard is illegal then the smell of bullshit is in the air.
--- End quote ---
Indeed, but if you do something that doesn't comply with the regs and someone gets hurt/property is damaged, you might be in for a bad time in court.
You can keep your Wylex rewireable board if it's your property and you live there, if you rent it out it'll have to be replaced.
Gyro:
--- Quote from: coppice on October 14, 2023, 10:37:59 pm ---
--- Quote from: Gyro on October 14, 2023, 09:49:57 pm ---Why would the government mandate it? For the reasons listed above, it makes no [Edit: practical or implementational] sense.
--- End quote ---
There have been a lot of things in the UK wiring regulations that only seemed to be there to force people to buy stuff.
--- End quote ---
I don't think @Connecteur has the slightest clue when he talks about "new houses going forward could be wired with safe USB throughout the house, but higher wattage appliances could be wired directly to high-current power" (reply#84). Looking at the latest USB-C spec, it specifies 5A @ 48V for 240W maximum. Other lower voltages demand 5A capability too. That means that for every three Dual USB-C outlets we're looking at 30A max. Now for a mains 30A radial circuit (I don't think anyone would be suggesting USB ring mains at this point!) we're looking at 4mm2 (clipped direct) or 6mm2 (surrounded by thermal insulation) for current handling and acceptable voltage drop (relative to mains) over normal domestic distances.
For the tighter voltage tolerance requirements of USB, we're going to be looking at a minimum of 6mm2 cabling, and thats just for three dual outlets, now multiply that by the actual number of outlets in a house. There's no way anyone is going to mandate putting that volume of copper into a house. ELV USB wiring is never going to replace mains wiring for non-fixed appliances, the losses, cable csa, and currents would simply be to large (higher than the fixed appliances at mains voltage). It wouldn't even be safer - more high current wiring terminations to that many outlets in a radial circuit would be more of a fire risk.
The idea is in cloud cuckoo land.
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