As I said, my experience of such things is not far from zero, so I have to take your word for that.
Kind Regards, John
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Kind Regards, John
Like EFLI, I disagree. If something is considered electrically acceptable in one country, then it leads one to at least question why it should not also be considered acceptable in another. Electricity, and electrical safety considerations, do not understand political boundaries.
Kind Regards, John
Excuse me but have I missed something? Is it not electrically necessary by UK regs to provide an OCPD for a thin cable? Physics aside the rules happen to be different in different countries. God forbid the results if a UK vehicle were to be driven on the left...
of a German Autobahn.
But so what. We have them! the origin is irrelevant and they are an excellent way to provide the OCPD required for safely completing the job according to UK regs.
I have no idea if it is or isn't different or if different rules are applied.
Indeed it is - and, hopefully, the same is true in terms of the regs of any other (sensible) country.
Yes, but if the rules are electrically satisfactory/adequate in one country, then it can be suspected that any 'more demanding' rules in any other country may well be (electrically-speaking) 'unnecessarily demanding'.
Kind Regards, John
However different countries do have differing levels of safety awareness and rules, accordingly I'd not be surprised if their electrical rules follow suit.
One only has to look at the plethora of youtube videos to see how different countries installations are performed, should we all take a leaf out of the Indian book or perhaps USA?
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Yes, of course but the goalposts have moved from the original "a 3A fuse must be used for a boiler" (or extractor fan).
Obviously - but would you argue that driving on the left in the UK is safer than on the right elsewhere?
Again, that is the point; rules do not alter physics. I don't think it takes much working out.
Yes, but we are talking about EU countries, and I would not expect them to have appreciably 'more lax' safety awareness than does the UK, would you?
After all, for example, we are always being reminded that Germany has for a long time (perhaps for ever) not regarded Type AC RCDs as 'safe enough', whereas they have been the norm in the UK for decades.
Kind Regards, John
I missed the bit where this discussion is restricted to EU however my working experience is.
Whether any country has better or worse regs than us is totally irrelevant when discussing the wiring regs pertinent to a particular country. Just as most that has proceeded.
I thought the whole discussion is about UK wiring regs. It wasn't me whos raised 0.5mm² wiring
Did I say it was or wasn't safer?
Maybe not but I still don't know how or if derating factors vary between UK and overseas.
... and, although not explicitly stated, it's pretty obvious that the discussion about 'other countries has related to the EU, hasn't it?
As has been said, it is relevant to look at regs in other countries when discussing whether people feel that those in the UK are 'OK', 'not safe enough' or 'unnecessarily demanding'.
However, I would remind you again that this whole discussion started because Simon suggested that the MIs for boilers sold in the UK might be 'as they are' in order that they would also be applicable in other countries - which makes the question of other countries regs very relevant.
In terms of specifics, I doubt that any (sensible0 country's regs would say that it was acceptable to have a 0.5mm² cable protected by an OPD with a rating of 13A or above. However, nor would I really expect that any country's regs would require an item of equipment (which itself {and the cable feeding it}} did not require such an external OPD) be protected by a 3A OPD 'just in case' someone connected a 0.5mm² conductor to it.
Kind Regards, John.
I didn't mean to send the conversation down that rabbit hole
I realise that you didn't, but what you wrote seems to have unwittingly and unintentionally 'touched some nerves'I didn't mean to send the conversation down that rabbit hole
Kind Regards, John
I still don't see anything obvious about it, in fact I see just the opposite which is why I mentioned 2 different continents.
As you have now expanded the specifics of the cable size, the specific point I (and others) have mentioned is in the UK that is catered for in our regs. Others seem to be saying the cable size seems to be ignored in other countries.
Applying common sense tells me other countries may be putting their installations at risk of overheating.
If the disconnect imes and adibatic pass for short-circuits and the load is deemed unlikely to cause an overload (or there is downstream overcurrent protection) then why not?
I suppose I asked for that, by mentioning only the first two of those considerations and not qualifying what I wrote by "when overload protection is required" - since, as you imply, at least in terms of UK regs, there are situations in which such protection may be omitted
Having said that, some people (including Sunray himself, and bernard) are capable of arguing that virtually any sort of of load is capableof causing an overload (under fairly exceptional circumstances)!
Kind Regards, John
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