HI this topic is regarding a previous one I wrote about a little while back so I thought it would be best to explain it in simpler detail in a fresh topic.
Anyway setup is as follows:
Cutout - Meter - 100mA main RCD - Henley
From Henley there is:
1) CU 100mA RCD mainswitch feeding part of flat and part of pub
2) CU Mains Isolator (no RCD) doing same as above
3) Submain (via Switchfuse) to cellar CU with 100mA RCD mainswitch
Earth goes into Cutout so is either TN-S/TN-C-S (no Earth rod in sight)
No 30mA RCD protection all CUs have MCBs
No RCDs are time delayed
This surely isn't right even in a commercial building?
Many Thanks
Anyway setup is as follows:
Cutout - Meter - 100mA main RCD - Henley
From Henley there is:
1) CU 100mA RCD mainswitch feeding part of flat and part of pub
2) CU Mains Isolator (no RCD) doing same as above
3) Submain (via Switchfuse) to cellar CU with 100mA RCD mainswitch
Earth goes into Cutout so is either TN-S/TN-C-S (no Earth rod in sight)
No 30mA RCD protection all CUs have MCBs
No RCDs are time delayed
This surely isn't right even in a commercial building?
Many Thanks