Client (local authority) want the consumer unit upgrading from a plastic one to the latest spec. I have also done a bit of repair work in the kitchen so it can be plastered. This is how the power gets from the street to the consumer unit.
firstly TNS with a looped supply into meter and isolator in a cupboard by the front door.
But out of the isolator it goes to a length of two core pyro with a bonding clamp on it for the earth. The pyro runs along the skirting board, under the bootom stair tread to the cupboard under the stairs where it feeds another cut out fuse with another bonding clamp on the other end of it.
The tails from the henley block go to the consumer unit which is on the other side of the wall to the henleys. The property was re-wired in 2016 with a dual RCD MEM plastic board. I can't work out whats gone on with it, looking at the wooden board to the right of the henleys it looks like the meter/fuse box used to be there at one point and its been moved to the front door but the supply cable at the front door looks as old as the hills anyway, house was built in about 1920 judging by the penny we found under the floorboards. So if the electric board have moved the meter at some point, who owns the pyro?
I know you cant use a bonding clamp as a main earth terminal but I've seen it done so many times on incomers, so what to do, insist I replace it with a piece of SWA along with a fused isolator, but there isn't any more room in the cupboard, run a separate 16mm earth. Plus the pyro ends are single insulated and there isn't a gland on either end of the pyro but I'll bet the entire street is done the same way. I know from experience that the councils send a bod round afterwards and their job is to make installers life as much of a misery as they can by inspecting everything with a microscope.
firstly TNS with a looped supply into meter and isolator in a cupboard by the front door.
But out of the isolator it goes to a length of two core pyro with a bonding clamp on it for the earth. The pyro runs along the skirting board, under the bootom stair tread to the cupboard under the stairs where it feeds another cut out fuse with another bonding clamp on the other end of it.
The tails from the henley block go to the consumer unit which is on the other side of the wall to the henleys. The property was re-wired in 2016 with a dual RCD MEM plastic board. I can't work out whats gone on with it, looking at the wooden board to the right of the henleys it looks like the meter/fuse box used to be there at one point and its been moved to the front door but the supply cable at the front door looks as old as the hills anyway, house was built in about 1920 judging by the penny we found under the floorboards. So if the electric board have moved the meter at some point, who owns the pyro?
I know you cant use a bonding clamp as a main earth terminal but I've seen it done so many times on incomers, so what to do, insist I replace it with a piece of SWA along with a fused isolator, but there isn't any more room in the cupboard, run a separate 16mm earth. Plus the pyro ends are single insulated and there isn't a gland on either end of the pyro but I'll bet the entire street is done the same way. I know from experience that the councils send a bod round afterwards and their job is to make installers life as much of a misery as they can by inspecting everything with a microscope.
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