- Reaction score
- 644
Pme Swa sub main supplying external tennis courts.
Because of cable size,tt system will be installed.
The original Pme supply comes from main distribution area,from a Bill Switchfuse isolator,63 amps.
The new tt system is ze 13 ohms,the Pme earthing system is 0.35 ohnms.
No connection to the Pme system exists in the new install.
The wire netting around the tennis court as zs of 11 ohms.
All main bonding completed
With the metal DB what would happen if the live had an earth fault to the tt system,there is no Rcd protection @ present on the Swa supply.
Because of cable size,tt system will be installed.
The original Pme supply comes from main distribution area,from a Bill Switchfuse isolator,63 amps.
The new tt system is ze 13 ohms,the Pme earthing system is 0.35 ohnms.
No connection to the Pme system exists in the new install.
The wire netting around the tennis court as zs of 11 ohms.
All main bonding completed
With the metal DB what would happen if the live had an earth fault to the tt system,there is no Rcd protection @ present on the Swa supply.