Scenario:
3 storey property used for bedsits.
Did a PIR last year; customer now wants remedial costs.
There are seven bedsits; each with its own DB - 6A 60898 for lights, and one or two 61009 20A/30mA for S/O.
Each bedsit is fed via a 6mm T+E, buried in the structure, from the ground floor bedsit; containing the HED and front-end DBs. The 6mm subs are fed through 30A 3036s (no RCD protection). Supply is single phase TN-S.
Now - if I used 32A 61009s for sub-main protection; 2 problems occur to me:
1 - the 20A 61009s in the bedsits are redundant.
2 - should an RCBo trip on a sub-main, access would be required to the ground floor bedsit to reset it.
As far as I can see, the only other option is to renew the sub-mains, in either trunking on surface, or SWA (or similar).
Your opinions would be valued guys.
KME
3 storey property used for bedsits.
Did a PIR last year; customer now wants remedial costs.
There are seven bedsits; each with its own DB - 6A 60898 for lights, and one or two 61009 20A/30mA for S/O.
Each bedsit is fed via a 6mm T+E, buried in the structure, from the ground floor bedsit; containing the HED and front-end DBs. The 6mm subs are fed through 30A 3036s (no RCD protection). Supply is single phase TN-S.
Now - if I used 32A 61009s for sub-main protection; 2 problems occur to me:
1 - the 20A 61009s in the bedsits are redundant.
2 - should an RCBo trip on a sub-main, access would be required to the ground floor bedsit to reset it.
As far as I can see, the only other option is to renew the sub-mains, in either trunking on surface, or SWA (or similar).
Your opinions would be valued guys.
KME