There is an article in PE and I have just received it via email.
I am disappointed that the article seems to suggest that it contains all you need to know yet no mention is made of earthing systems
There is an article in PE and I have just received it via email.
I am disappointed that the article seems to suggest that it contains all you need to know yet no mention is made of earthing systems
well I would of course, but then I am quite happy to justify my exceptions.
However, not being a member of any approved scheme, for my own domestic stuff I occasionally find myself trying to convince a third party or a building control chap that something I have done is kosher. Resistance to anything that is not like ‘normal’ is remarkable.
However, having worked for a little while in a country where 3 phases at 32A each was the norm for a house, and 16A/ phase for a small flat or bedsit, I must say I appreciate the advantages. water heaters in 3 cores of 2.5mm, thinner sub-mains lower PSSC, negligible neutral to terra-firma offset voltages, what is not to like. Oh yes, the bloody awful plugs, especially the older Russian ones. Still with lights and power on combined 16A radials the fuseboards are simple, and the no of fuse sizes or breaker ratings used is negligible, well one size really, 16A C type…
Certainly until recently plastic 3 phase consumer units existed. No use in BS7671 land, but the rest of the planet seems OK with the idea. Needs a 3 part bus bar under the breaker and separate neutral bar.
Mike.
well I would of course, but then I am quite happy to justify my exceptions.
However, not being a member of any approved scheme, for my own domestic stuff I occasionally find myself trying to convince a third party or a building control chap that something I have done is kosher. Resistance to anything that is not like ‘normal’ is remarkable.
However, having worked for a little while in a country where 3 phases at 32A each was the norm for a house, and 16A/ phase for a small flat or bedsit, I must say I appreciate the advantages. water heaters in 3 cores of 2.5mm, thinner sub-mains lower PSSC, negligible neutral to terra-firma offset voltages, what is not to like. Oh yes, the bloody awful plugs, especially the older Russian ones. Still with lights and power on combined 16A radials the fuseboards are simple, and the no of fuse sizes or breaker ratings used is negligible, well one size really, 16A C type…
Certainly until recently plastic 3 phase consumer units existed. No use in BS7671 land, but the rest of the planet seems OK with the idea. Needs a 3 part bus bar under the breaker and separate neutral bar.
Mike.