Nice diagram! Screw connection between G/Y and earthing nut doesn't seem to be accessible for inspection & maintenance though (526.3).
I can't help thinking it would be simpler just to gland into an insulating box - boot prevents the gland being accessible outside (and a cable tie to prevent the boot being removed without a tool if you prefer) - gland accessible for testing from inside the box after lid removed (using a tool).
I see we're relying on the sheath of the SWA to provide insulation of the TN earthed armour within the TT environment....
- Andy.
Well, this is the debate ... which is correct??
If we accept that the armour is not accessible because of the sheath, there is no issue with 411.3.1.1.
I can verify the screw connection by testing continuity, so that seems like the lesser of the two evils ... certainly, I'd back that in CDM risk assessment, arguing it's available for inspection and testing if you really need it to be (but you may need to replace the cold-shrink sleeving)?
Nice diagram! Screw connection between G/Y and earthing nut doesn't seem to be accessible for inspection & maintenance though (526.3).
I can't help thinking it would be simpler just to gland into an insulating box - boot prevents the gland being accessible outside (and a cable tie to prevent the boot being removed without a tool if you prefer) - gland accessible for testing from inside the box after lid removed (using a tool).
I see we're relying on the sheath of the SWA to provide insulation of the TN earthed armour within the TT environment....
- Andy.
Well, this is the debate ... which is correct??
If we accept that the armour is not accessible because of the sheath, there is no issue with 411.3.1.1.
I can verify the screw connection by testing continuity, so that seems like the lesser of the two evils ... certainly, I'd back that in CDM risk assessment, arguing it's available for inspection and testing if you really need it to be (but you may need to replace the cold-shrink sleeving)?
