Bigger Supplies Needed.

On the face of it, three 100 A fuses give you 69 kVA, but I doubt that such a high power ADMD would be agreed with the supplier.

69 kVA for, say 12 hours a day for 3 months, would cost about £15k!!!

Well to compete with the temperatures achieved  by gas heating in solid walled houses the price of leccy needs to come down a lot, to be the same as or cheaper than gas per kW. Or as noted above we need to start demolishing older housing stock, and rebuilding with cavity walls that can be insulated and so on. If not there will simply be a lot of cold houses, or at least ones with only one heated room. However, folk have lived to a ripe old age like that in the past, so they may well do so again - most if the UK housing stock not only pre-dates WW2  it also pre-dates central heating...

At the daily mail level that's not such a bad description of a 3 phase supply considering the sort of dogs dinner we usually get when they try to describe anything technical.

3 phase need not be stronger. Plenty of the world gives 3 phases at 32A per phase in places where we would have 1 at 100A, it just makes for more flexible meter tails and lower pscc.

Oddly I was disabusing someone of the 6 foot rule only the other day in relation to two sockets in the same lab -they wanted to make an HS near miss, it isn't.

And even when it was a rule, all it needed was a warning label, and phase barriers inside switchgear supplied by more than one phase - we had plently of places where alll 3 phases came into the same box.

Mike.

Well to compete with the temperatures achieved  by gas heating in solid walled houses the price of leccy needs to come down a lot, to be the same as or cheaper than gas per kW. Or as noted above we need to start demolishing older housing stock, and rebuilding with cavity walls that can be insulated and so on. If not there will simply be a lot of cold houses, or at least ones with only one heated room. However, folk have lived to a ripe old age like that in the past, so they may well do so again - most if the UK housing stock not only pre-dates WW2  it also pre-dates central heating...

At the daily mail level that's not such a bad description of a 3 phase supply considering the sort of dogs dinner we usually get when they try to describe anything technical.

3 phase need not be stronger. Plenty of the world gives 3 phases at 32A per phase in places where we would have 1 at 100A, it just makes for more flexible meter tails and lower pscc.

Oddly I was disabusing someone of the 6 foot rule only the other day in relation to two sockets in the same lab -they wanted to make an HS near miss, it isn't.

And even when it was a rule, all it needed was a warning label, and phase barriers inside switchgear supplied by more than one phase - we had plently of places where alll 3 phases came into the same box.

Mike.