3 phase domestic

Depends on the requirements. In some WP areas I think the idea is that all the 'normal' stuff goes on one phase, anything extra - like EV charge points or heat pumps - go on another (the DNO then rotate the phases between houses to balance things out). So in that case you'd have an ordinary single phase CU as normal, plus either a small additional CU or something like a switchfuse for the other.

In other situations the idea might be to allow the use of 3-phase equipment - both EV and heatpumps come in 3-phase variants - and it might be useful for other things as well (e.g. DIY workshops that might want things with 3-phase motors). In these cases a 3-phase DB might make more sense - or you could go for a combination of a single phase CU plus some small 3-phase switchgear. As with anything new it's best to have some detailed discussions with both the customer/specifier and the DNO - as there are likely to be quite a few different assumptions floating about until some common practice gets established.

    - Andy.

Depends on the requirements. In some WP areas I think the idea is that all the 'normal' stuff goes on one phase, anything extra - like EV charge points or heat pumps - go on another (the DNO then rotate the phases between houses to balance things out). So in that case you'd have an ordinary single phase CU as normal, plus either a small additional CU or something like a switchfuse for the other.

In other situations the idea might be to allow the use of 3-phase equipment - both EV and heatpumps come in 3-phase variants - and it might be useful for other things as well (e.g. DIY workshops that might want things with 3-phase motors). In these cases a 3-phase DB might make more sense - or you could go for a combination of a single phase CU plus some small 3-phase switchgear. As with anything new it's best to have some detailed discussions with both the customer/specifier and the DNO - as there are likely to be quite a few different assumptions floating about until some common practice gets established.

    - Andy.