Morning guys
I know another earth question - I'm starting to get a little bit repetative. I'll try an come up with a different question next time.
Anyway, just want to check on the earthing for the garage that I'm working on.
Its a TN-C-S supply to the house.
The garage is detached from the house and is about 1 meter away. The supply is fed from a 16A MCB on a small CU with a 30mA RCD. The cable is run in SWA.
All cables and boxes are surface mounted and other than the socket, all boxes and switches are plastic.
The supply goes into the garage and connects into a metal clad double socket. From the double socket 2.5mm (no earth) is run into a FCU and from there 1.5mm (no earth) is run to a double light switch.
The lighting has the earths connected and just terminated in the back of the light switch, no earth going back to the FCU.
The FCU has the face plate and box connected with a earth.
No earth between the socket and FCU.
Metal clad socket doesn't have an earth between the box and the incoming supply.
What I have done is to re-wire from the double socket to the FCU with 2.5mm T&E. From the FCU I have re-wired to the light switch in 1.5mm T&E
I have also earthed the metal clad box.
I just wanted to check that this is all OK. I know that sometimes outbuilds shouldn't be conneted to the same earth as the house as they may be at a different potential.
Cheers
Rich
I know another earth question - I'm starting to get a little bit repetative. I'll try an come up with a different question next time.
Anyway, just want to check on the earthing for the garage that I'm working on.
Its a TN-C-S supply to the house.
The garage is detached from the house and is about 1 meter away. The supply is fed from a 16A MCB on a small CU with a 30mA RCD. The cable is run in SWA.
All cables and boxes are surface mounted and other than the socket, all boxes and switches are plastic.
The supply goes into the garage and connects into a metal clad double socket. From the double socket 2.5mm (no earth) is run into a FCU and from there 1.5mm (no earth) is run to a double light switch.
The lighting has the earths connected and just terminated in the back of the light switch, no earth going back to the FCU.
The FCU has the face plate and box connected with a earth.
No earth between the socket and FCU.
Metal clad socket doesn't have an earth between the box and the incoming supply.
What I have done is to re-wire from the double socket to the FCU with 2.5mm T&E. From the FCU I have re-wired to the light switch in 1.5mm T&E
I have also earthed the metal clad box.
I just wanted to check that this is all OK. I know that sometimes outbuilds shouldn't be conneted to the same earth as the house as they may be at a different potential.
Cheers
Rich
