UK Three phase supply into single phase board

[Mindgirl]

Hi

I popped round to quote for ‘ finishing ‘ a solar install started by a company rhyming with Bird of Polar . The house has a three phase supply, but it looks like someone has taken the three live tails into board not designed for three phase (albeit with a three pole switch).
They’ve only got one phase to the house on a 63A breaker, the house (very large detached property ) demand looks like it would be much more than that. In fact they have a consumer unit with 24 ways inside including a 7kW EV charger, large electric hob and heat pumps
Doesn’t look they have made any effort to balance. And even if I ignore all of that, I would want to use a three phase inverter, and so would want to go to a three phase board.

Am I overthinking this, and this setup is ok, although I’m thinking we need to put in a three phase panel, and then also consider how we provide ongoing supply to main house DB (and summer house)

I suspect that whatever I say is not going to go down well with client, as they’ve already paid some £11k to the now defunct solar company, and all they have done is put solar panels (18x 440W) on roof.

The board was apparently put in by builders electrician.

 

[oscar21]

Is it not a type "A" board, something like this

https://www.cef.co.uk/catalogue/products/1487202-4-way-tp-n-type-a-distribution-board-c-w-100a-switch-disconnector

 

[Mindgirl]

Is it not a type "A" board, something like this

https://www.cef.co.uk/catalogue/products/1487202-4-way-tp-n-type-a-distribution-board-c-w-100a-switch-disconnector

Might be one with three pole rather than 4 pole - didn’t think of that - thanks
But still looks they have almost all the load on one phase, with a 63A mcb for the entire house. (Which could be argued is not my problem, if I’m only quoting for solar work completion)

 

[westward10]

All looks a bit out of kilter I think it should be a double pole switch judging by the Main Switch label with the space to the right if a double pole were fitted for the SPD.

 

[DefyG]

But still looks they have almost all the load on one phase

Agreed but difficult with just 4 different single phase circuits but looks like phases are loaded L1 = 16A, L2 = 50A and L3 73A The 10A circuit could go onto L1 to help balance but not a great deal.

 

[SparkySy]

Has the cover been removed, is it TP bussbar?

I fitted one as @oscar21 linked to a few months ago, it was actually a nice board and with the TP RCBO's made an excellent job!