Electrical earthing - swimming pool DB

[Jacques K]

I need some assistance with the following please - my swimming pool DB is fed from the house DB via 2x core + E surfix cable. I have an E/L tester which shows that the plug polarity is correct, however when testing the E/L there is almost zero reading on the analog dial. I have tested the E/L unit in the house DB by testing a plug circuit, all ok. Could it be that the distance between the 2-DB's is to far?

You comments/advice welcomed.

Jacques K

[AndyD]

The device you're using test isn't good. It's highly unlikely that distance from the DB is the problem.

Why are you trying to test the pool?

[Jacques K]

Thank you for your reply AndyD. I managed to solve the problem, the plug of pool DB when tested is now tripping the E/L in the house DB. I disconnected the wires from the house DB and pool DB to establish continuity of the earth wire, in the process I discovered that the earth wire connection was poor, after reconnecting and testing the E/L tripped @ around 27mA. The reason for testing the circuit from the pool is for the pump earthing and pool light.