To get any sort of valid comparison there would need to be some accurate way of determing what proportion of those domestic electrocutions in each country were down to work done by those trading as electricians, which might be quite difficult.
True - but, quite honestly, what probably makes these discussions even more moot is the fact that I doubt that many (of the tiny number of) domestic electrocutions in the UK (and probably other countries) are "down to" a person who worked on the electrical installation at all. If anyone is 'to blame', it's probably most likely to be the person who gets electrocuted.To get any sort of valid comparison there would need to be some accurate way of determing what proportion of those domestic electrocutions in each country were down to work done by those trading as electricians, which might be quite difficult.
Interesting that they mentioned 19 strand cable. The stiffness of the more common 7 strand cable makes it (IMO) put a lot of mechanical strain on the connections, and the mounting of the main switch - of more concern where the DIN rail is plastic and so the live bar ends up providing some of the mechanical support for the main switch !Here is some tests on some main switch terminals ...
Hager have it coveredInteresting that they mentioned 19 strand cable. The stiffness of the more common 7 strand cable makes it (IMO) put a lot of mechanical strain on the connections, and the mounting of the main switch - of more concern where the DIN rail is plastic and so the live bar ends up providing some of the mechanical support for the main switch !Here is some tests on some main switch terminals ...
Indeed, I would love to use the 25mm² insulated and sheathed tri rated cable we use for telecoms DC supplies. Not sure if it's permitted for meter tails use, but with ferrules on each end would remove the strain from the terminals. Not to mention being much easier to install.The stiffness of the more common 7 strand cable makes it (IMO) put a lot of mechanical strain on the connections, ...
That looks much flimsier than the earlier clamp with 2 screws.Hager have it covered
Completely irrelevant.I do not know why electricians are not registered but if (in Britain) three thousand a year were killed by electrical installations something would likely be done.
Is it any better where electricians are registered legally?
So long as "properly qualified" doesn't mean somebody who has been on a 5-day course to get some worthless "domestic installer" certificate or whatever it's called but still barely even understands Ohm's Law.a system which prevents people from trading as electricians (or plumbers or carpenters or roofers or builders or gardeners or mechanics or... or.... or...) unless they are properly qualified.
Well, yes, but the problem obviously is that, at present, there is no 'requirement' (legislated or otherwise) for someone to be 'properly qualified' in order to trade as 'an electrician', nor any definition of what 'properly qualified' would mean in that context. In practice, were such a requirement to become mandatory, the most obvious way to implement/administer/police/enforce it would be to have some sort of system of registration/licensing - just as with taxi drivers, pub landlords or whatever."Registration" may or may not be a good idea, or necessary, but what is necessary is a system which prevents people from trading as electricians (or plumbers or carpenters or roofers or builders or gardeners or mechanics or... or.... or...) unless they are properly qualified.
I'm far from convinced that they teach Ohm's Law at all on such 5-day courses!So long as "properly qualified" doesn't mean somebody who has been on a 5-day course to get some worthless "domestic installer" certificate or whatever it's called but still barely even understands Ohm's Law.
I don't think there are any specific regs for meter tails (cue someone stating otherwise ) beyond being suitable for the job and sheathed (ie not just single insulation). Do you have any reference/code for it and then perhaps someone could look it up ?Indeed, I would love to use the 25mm² insulated and sheathed tri rated cable we use for telecoms DC supplies. Not sure if it's permitted for meter tails use, but with ferrules on each end would remove the strain from the terminals. Not to mention being much easier to install.
Indeed, I would love to use the 25mm² insulated and sheathed tri rated cable we use for telecoms DC supplies. Not sure if it's permitted for meter tails use, but with ferrules on each end would remove the strain from the terminals. Not to mention being much easier to install.
I'm far from convinced that they teach Ohm's Law at all on such 5-day courses!
There would clearly have to be work done to establish what constituted "properly qualified", and legislation put in place.Well, yes, but the problem obviously is that, at present, there is no 'requirement' (legislated or otherwise) for someone to be 'properly qualified' in order to trade as 'an electrician', nor any definition of what 'properly qualified' would mean in that context.
Quite possibly.In practice, were such a requirement to become mandatory, the most obvious way to implement/administer/police/enforce it would be to have some sort of system of registration/licensing - just as with taxi drivers, pub landlords or whatever.
Together with regulators, examiners, enforcement procedures, guidance, and all the associated bureaucracy. Do we really need all that, given the tiny number of serious electrical accidents in domestic premises that can be attributed to poor workmanship?There would clearly have to be work done to establish what constituted "properly qualified", and legislation put in place.
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