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What's wrong with my supply? The earth cable isnt thick enough?

Could you not do this? Sorry for bad paint skills

Any one got any suggestions before I talk to the electritian?

Supply in CU The one labeled 'Spare' has a 32A B32 in it, the one to the far right labeled sockets is actually our whirlpool bath? Don't know why its labelled as sockets by thats by the by Edit; Label on Pool pump says under HP/KW : 1/0.75 which I assume means...

Ohh, that makes sense. I'm not sure how much it actually draws, but on the motor it says 240v AC 4.2A. It is quite old, I will get a picture shortly.

Okay, I was told it was 3 phase? It runs from a 13A plug atm in the garden. I will go and have a proper look at it today. Going to get some better pictures now, what do I need to get?

Okay, ill get in contact with the electrician and ask him. I think its 3 phase, it has a large capacitor on it I think to make it 3 phase maybe? Anyway, it draws a lot of power

That was another option, would it be better to.completely split the garage from the house? Different meter trails? I will get some better pictures of the earthing soon

Does that mean my earth is supplied via the black cable? The black cable is the feed to the biuse, the black box to the right then has two meter trails running to the electricity meter, then in to my CU The only pipes or anything going in to the garage is one blue plastic water pipe that is...

I'm not sure what is supplying the earth to the house, presumably a earth rod? Its a detached house. There is only a water supply to the garage, it uses the Blue plastic piping. The walls are made of blocks, the roof is wood beems with tiled roof, floor is solid concrete

I have been doing some googling and found this: These are for a 25m run of 3 Core SWA XLPE Cable Size 4 mm Voltage Drop 7.61 Volts. Percentage Drop 3.3% Max Cable Load* 42.0 Amps Cable Size 6 mm Voltage Drop 7.39 Volts. Percentage Drop 3.2% Max Cable Load*...

Currently our garage is powered from a fused spur from the back of one of our plugs. I have been doing some calculations recently and work out that I am very very close to the 13a limit of the spur. We have a 3 Phase Swimming Pool Pump (rated at 4.2A @ 240v), I also have a large chest...