In my case 2, the high level run S.W.A. entered an all insulated enclosure unglanded and not connected to earth at both ends. The three core S.W.A. was connected as L., N. and C.P.C.
Z.
In this case, an undetected fault to armour might leave the armour "live" and wouldn't necessarily be detected by the tests prescribed in BS 7671 (insulation resistance test to cpc or earth won't pick it up) - you'd specifically need to test to armour. What if the outer sheath becomes damaged at some point?
Thinking about the permutations logically, I'm tending towards it being negligent, in most cases, to avoid earthing armour of a cable operating at low voltage, unless some other precautions are taken.
Indeed, I noted the "deficiency" and am not entirely happy with the situation. It was installed on the cheap by a sports' club member. I was keen to learn of regulations that apply if I have to defend my position of criticising the installation.
In my case 2, the high level run S.W.A. entered an all insulated enclosure unglanded and not connected to earth at both ends. The three core S.W.A. was connected as L., N. and C.P.C.
Z.
In this case, an undetected fault to armour might leave the armour "live" and wouldn't necessarily be detected by the tests prescribed in BS 7671 (insulation resistance test to cpc or earth won't pick it up) - you'd specifically need to test to armour. What if the outer sheath becomes damaged at some point?
Thinking about the permutations logically, I'm tending towards it being negligent, in most cases, to avoid earthing armour of a cable operating at low voltage, unless some other precautions are taken.
Indeed, I noted the "deficiency" and am not entirely happy with the situation. It was installed on the cheap by a sports' club member. I was keen to learn of regulations that apply if I have to defend my position of criticising the installation.
