T
tshort1984
Hello to you all. I am new to these forums, and not a qualified sparky, but after your advice. I am the MD of a company that has moved to a new industrial unit, well part of a unit. The unit is 22k sq ft, and has about 6 CU spread around the walls. We are letting around 10k sq ft, and have 1 of these CU in our unit. The landlord has had a sparky in to sub-meter our section of the unit, ready for our sparky to install out outlets and rewire our lights.
Basically, i would like you to confirm the landloards wiring is safe, and meterered correctly (so i dont end up paying for someone elses electric!!
The CU had a 10mm 4c swa cable supply. The CU has been replaced by a metal box with the SWA glanded to it with a brass washer inside the box with 6mm earth bolted to the washer (other end fixed to all metal connecter block inside the box, and has 2 cable exiting the block). There is a 3/4 inch MDF board screwed into the back of this box. The 4 cores then feed into the meter (mounted to the MDF). There is another set of 10mm meter tails out of this meter that go to 4 seperate black blocks (also mounted to the MDF). these black blocks then have 2 meter tails coming out each block (so each block has 3 tails, 1x10mm in, 2x10mm out), 1 set of the 4xcores + 1xearth then exit the box on the right at the top, into a 100a isolator switch. The other 4xcores + 1xearth exit the box on the right at the bottom into another 100a isolator switch. Both these isolators are wired the same, with the 3 live tails into the fused connectors, the neutral to an isolated connector block, and the earth to the all metal connector block.
To clarify, we need 2 CU installing, one on each opposite wall (its a long, thin unit with sockets requires down both walls)
Im assuming this is all correct and safe/legal?
Im also assuming all my sparky needs to do is wire his 10mm SWA from the isolaters to the new CU, and wire from there?
Hope this is clear enough!
Thanks in advance for you much valued insight.
Basically, i would like you to confirm the landloards wiring is safe, and meterered correctly (so i dont end up paying for someone elses electric!!
The CU had a 10mm 4c swa cable supply. The CU has been replaced by a metal box with the SWA glanded to it with a brass washer inside the box with 6mm earth bolted to the washer (other end fixed to all metal connecter block inside the box, and has 2 cable exiting the block). There is a 3/4 inch MDF board screwed into the back of this box. The 4 cores then feed into the meter (mounted to the MDF). There is another set of 10mm meter tails out of this meter that go to 4 seperate black blocks (also mounted to the MDF). these black blocks then have 2 meter tails coming out each block (so each block has 3 tails, 1x10mm in, 2x10mm out), 1 set of the 4xcores + 1xearth then exit the box on the right at the top, into a 100a isolator switch. The other 4xcores + 1xearth exit the box on the right at the bottom into another 100a isolator switch. Both these isolators are wired the same, with the 3 live tails into the fused connectors, the neutral to an isolated connector block, and the earth to the all metal connector block.
To clarify, we need 2 CU installing, one on each opposite wall (its a long, thin unit with sockets requires down both walls)
Im assuming this is all correct and safe/legal?
Im also assuming all my sparky needs to do is wire his 10mm SWA from the isolaters to the new CU, and wire from there?
Hope this is clear enough!
Thanks in advance for you much valued insight.
