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Hello All, We are just about to start renovation work including an extension on a 500 Year old house, and I think the electrics must have been installed when it was first built they're that bad!
At the moment there is a new(ish) 100A Feed (Installed bout 6 years ago) marked "PME System". The earth comes from the Old wylex board, through the box marked "PME" and back out to an earth stake outside.
1) Is the earth stake necessary? I take it that the system is TN-CS but I didn't think you needed a stake?
2)
The old wylex board runs:
3x Ring main (32A)
2x Lighting main (6A)
1x Shower (32A)
1x Cooker (45A)
This board is going to be replaced with a proper CU with a 100A Breaker then daisy chain to a second CU in the extension.
Main CU MCB's
- 3x Ring Main (32A)
- 2x Lighting Main (6A)
- 2x Shower (32A)
- 2x Cooker (32A)
- Daisy Chain to 2nd Board (45A)
2nd CU MBC's:
- Outdoor Shed (10A)
- 2x Lighting Main (Outside) (6A)
- Outdoor Sockets (16A)
- Indoor Lights (6A)
- Ring Main (32A)
- burglar Alarm (6A)
- Door Bell (6A)
The two boards are 20m Apart, was going to use 10mm(sq) T&E to link the boards, + a 6mm(sq) Earth from CU to CU bonded mid way to new plumbing.
Does this sound Kosher? I understand it would be easier to use one big board but the first CU is at one end of a long thin house and the 2nd CU will be at the other end and don't fancy a rewire!
Cheers, Matt
At the moment there is a new(ish) 100A Feed (Installed bout 6 years ago) marked "PME System". The earth comes from the Old wylex board, through the box marked "PME" and back out to an earth stake outside.
1) Is the earth stake necessary? I take it that the system is TN-CS but I didn't think you needed a stake?
2)
The old wylex board runs:
3x Ring main (32A)
2x Lighting main (6A)
1x Shower (32A)
1x Cooker (45A)
This board is going to be replaced with a proper CU with a 100A Breaker then daisy chain to a second CU in the extension.
Main CU MCB's
- 3x Ring Main (32A)
- 2x Lighting Main (6A)
- 2x Shower (32A)
- 2x Cooker (32A)
- Daisy Chain to 2nd Board (45A)
2nd CU MBC's:
- Outdoor Shed (10A)
- 2x Lighting Main (Outside) (6A)
- Outdoor Sockets (16A)
- Indoor Lights (6A)
- Ring Main (32A)
- burglar Alarm (6A)
- Door Bell (6A)
The two boards are 20m Apart, was going to use 10mm(sq) T&E to link the boards, + a 6mm(sq) Earth from CU to CU bonded mid way to new plumbing.
Does this sound Kosher? I understand it would be easier to use one big board but the first CU is at one end of a long thin house and the 2nd CU will be at the other end and don't fancy a rewire!
Cheers, Matt