Question:
A commercial property has an illuminated sign, located approx 15 metres from the building.
The supply is TN-C-S - BS88/ 3036 - SWA from main DB
The sign does not have an r1r2, or Zs reading.
At the only junction you can find (3" below the grass), the supply is 2 core rubber flex.
Between the sign and the building is a car park.
The cable feeds only the sign.
Do you:
1. drop a rod next to the sign, as the earth shouldn`t be exported anyway?
2. go hunting for the "hidden" joint with a digicat - if the car park has to be excavated, we`re into the thousands at least!
3. if you do 1. , what about the rubber cable in the earth(2 core, remember)?
FYI. The "junction box" consists of ametal pattress, wrapped with insulating tape, with a double connector strip inside it. 4" below the ground. (there is also an IP65 socket fed from the "JB" - 1.5mm rubber flex again.). The 3036 supply fuse is 16A - the outgoing swa is 10mm - the rubber flex at the "accessible junction" is 2.5mm MAX
Your thoughts, please?
A commercial property has an illuminated sign, located approx 15 metres from the building.
The supply is TN-C-S - BS88/ 3036 - SWA from main DB
The sign does not have an r1r2, or Zs reading.
At the only junction you can find (3" below the grass), the supply is 2 core rubber flex.
Between the sign and the building is a car park.
The cable feeds only the sign.
Do you:
1. drop a rod next to the sign, as the earth shouldn`t be exported anyway?
2. go hunting for the "hidden" joint with a digicat - if the car park has to be excavated, we`re into the thousands at least!
3. if you do 1. , what about the rubber cable in the earth(2 core, remember)?
FYI. The "junction box" consists of ametal pattress, wrapped with insulating tape, with a double connector strip inside it. 4" below the ground. (there is also an IP65 socket fed from the "JB" - 1.5mm rubber flex again.). The 3036 supply fuse is 16A - the outgoing swa is 10mm - the rubber flex at the "accessible junction" is 2.5mm MAX
Your thoughts, please?