I have posted a piece here which is also on the TT topic, but is more general and I think a new thread would be better. Your voice is heard. See below.
The example that I gave of the utility and kitchen circuits is an example of the folly of this new approach. Most people would have the large appliances on the same circuit as the sockets above the work surfaces. Splitting the circuit into two has not, of course, made a jot of difference to the overall load, but it has potentially made the installation non-compliant under the new rules.
I would be surprised if this particular house ever draws 63 A total. It is well insulated, has gas CH, and coal fires (not that there will be any coal soon). If the boiler broke down, there might just be 1 x 3 kW immersion, 1 x 2 kW fan heater, 1 x 1.5 kW washing machine, 1 x 1.5 kW kettle, and a few other bits and bobs on simultaneously, but not for long.
The crucial thing is that there will be no electric showers, no EVCP (on this CU), and no heat pump for the pool (there isn't one).
My interpretation is that the installation is compliant.
Incidentally, the customer's "nuisance tripping" in his current home is due to inappropriate design or use (e.g. woodworking machinery on a type B MCB) and shoddy workmanship.
The example that I gave of the utility and kitchen circuits is an example of the folly of this new approach. Most people would have the large appliances on the same circuit as the sockets above the work surfaces. Splitting the circuit into two has not, of course, made a jot of difference to the overall load, but it has potentially made the installation non-compliant under the new rules.
I would be surprised if this particular house ever draws 63 A total. It is well insulated, has gas CH, and coal fires (not that there will be any coal soon). If the boiler broke down, there might just be 1 x 3 kW immersion, 1 x 2 kW fan heater, 1 x 1.5 kW washing machine, 1 x 1.5 kW kettle, and a few other bits and bobs on simultaneously, but not for long.
The crucial thing is that there will be no electric showers, no EVCP (on this CU), and no heat pump for the pool (there isn't one).
My interpretation is that the installation is compliant.
Incidentally, the customer's "nuisance tripping" in his current home is due to inappropriate design or use (e.g. woodworking machinery on a type B MCB) and shoddy workmanship.
