This is getting embarrassing - I've been looking for a sub-main consumer unit in a church for an hour now.
I've found the incomer. There's a nice old Crabtree board with black breakers, one of which is a 50A for "Hall DB". It's a split level site and the hall is downstairs, and the fat 10mm T+E cable goes off in this direction. Turning the breaker off isolates the rfc circuit I need to tap into and while it's looking unlikely it's RCD protected and I need to know and probably remedy this.
I could easily prove it isn't of course, a simple high current Zs, but either way I'm stuffed - if it is RCD protected I need to be able to reset it, and if it isn't I need to find the board and change it!
I've just swallowed my pride and phoned the guy that did the last EICR, who laughed and said "glad it's not just me, I couldn't find it either, and I put it down as an agreed limitation!" (so an entire floor wasn't tested....hmmmm!)
In desperation I've shorted L+N at the supply to it and measured the resistance of the lighting circuit downstairs, and narrowed it down to one corner of the building.
If I ever find it I'll report back...
I've found the incomer. There's a nice old Crabtree board with black breakers, one of which is a 50A for "Hall DB". It's a split level site and the hall is downstairs, and the fat 10mm T+E cable goes off in this direction. Turning the breaker off isolates the rfc circuit I need to tap into and while it's looking unlikely it's RCD protected and I need to know and probably remedy this.
I could easily prove it isn't of course, a simple high current Zs, but either way I'm stuffed - if it is RCD protected I need to be able to reset it, and if it isn't I need to find the board and change it!
I've just swallowed my pride and phoned the guy that did the last EICR, who laughed and said "glad it's not just me, I couldn't find it either, and I put it down as an agreed limitation!" (so an entire floor wasn't tested....hmmmm!)
In desperation I've shorted L+N at the supply to it and measured the resistance of the lighting circuit downstairs, and narrowed it down to one corner of the building.
If I ever find it I'll report back...
