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Do you have a continuity tester ? If so test from the earth lug to the earth pin on the box powerpoint . This will confirm if the box is connected internally .
And secondly theres no guarantee that the power point in your house has an earth at it.
And being that i know what that box is you should run a 6mm earth wire to it from the main earthing system if theres a fault the earth in the flex cable isnt heavy enough or at least a 4mm earth. The lug is there for a reason.
Plus if you remove the plug from the wall disconnecting the "earth" the power is still on an unearthed box
 
Absorber said:
Do you have a continuity tester ? If so test from the earth lug to the earth pin on the box powerpoint . This will confirm if the box is connected internally .
And secondly theres no guarantee that the power point in your house has an earth at it.
And being that i know what that box is you should run a 6mm earth wire to it from the main earthing system if theres a fault the earth in the flex cable isnt heavy enough or at least a 4mm earth. The lug is there for a reason.
Plus if you remove the plug from the wall disconnecting the "earth" the power is still on an unearthed box
Click to expand...

All that from a .? Very impressive!
 
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