Garage supply. RCBO at CU? RCCB at garage board as well

Dan59H · Sep 20, 2013

Putting in a garage supply for an obviously dearly loved friend,
My current theory is 32A RCBO at CU
then 4mm t&e to garage board.
garage board has an incoming RCCB
and I'll be putting 2 radial circuits and a lighting circuit on 2x B20's and a B6 respectively.

Is this going to provide discrimination when there's an earth fault on the garage circuit via the RCBO?

after reading a few threads looking for an answer to a different question I'm outfoxed by the RCD in series stuff

micknew · Sep 21, 2013

Dan59H said:
Cheers geniuses. So quick to point out it doesn't discriminate but you don't have a clue why

Toys thrown out of his pram because he couldn't pick our brains.

Des 56 · Sep 21, 2013

Dan59H said:
Cheers geniuses. So quick to point out it doesn't discriminate but you don't have a clue why

Try not to bite Dan59H,
The "don't have a clue" guy you quoted has bitten off many kittens heads with his Tiger sized jaws,he may even eat you for breakfast with comments like that

Dan59H · Sep 21, 2013

Must be an absolute riot on site with him. Just making the point that no one seems to actually know why they don't work in series. It's just an accepted truth

micknew · Sep 21, 2013

Dan59H said:
Must be an absolute riot on site with him. Just making the point that no one seems to actually know why they don't work in series. It's just an accepted truth

Yeh whatever.

GLENNSPARK · Sep 21, 2013

Dan59H said:
Must be an absolute riot on site with him. Just making the point that no one seems to actually know why they don't work in series. It's just an accepted truth

oh...
i can assure you we do know...
do you?

GLENNSPARK · Sep 21, 2013

Engineer54 said:
Dear God!! If you have read the other numerous threads on this common situation and are Still ''outfoxed'' by RCD's in series, there really isn't much hope for you i'm afraid!!

Back for another 5 weeks at the training centre for you!!

its getting to be just total crap isn`t it....

Richard Burns · Sep 21, 2013

Dan59H said:
Must be an absolute riot on site with him. Just making the point that no one seems to actually know why they don't work in series. It's just an accepted truth

They will work in series, that is the problem, which one will work, that is the clincher!

Engineer54 · Sep 21, 2013

Richard Burns said:
They will work in series, that is the problem, which one will work, that is the clincher!

Ans all too often, it'll be Both!! lol!!

GLENNSPARK · Sep 21, 2013

Richard Burns said:
They will work in series, that is the problem, which one will work, that is the clincher!

you can stand there asking the question Richard...
the problem is:
will you get an answer?

[ElectriciansForums.net] Garage supply. RCBO at CU? RCCB at garage board as well

Knobhead · Sep 22, 2013

micknew said:
Toys thrown out of his pram because he couldn't pick our brains.

Not dig at you Mick. I liked the comment as it gave a springboard.

Fortunately my brain is self regenerating and has no need of sustenance from lower life forms.

Where I do feed is in the higher echelons of international engineering debate.

Trouble is the idiots have found us there.

We still have the Electrical Trainee.

“Our 275KV dual OH feeder keep tripping on directional fault. Should we disable the relays?”
“My electrical team have advised me the motors for the fire protection system won’t trip on overload with our present set up. We are going down rate the OL & OC protection. Why was it set so high in the first place?”

Half the time we are trying to translate Pidgin English to something intelligible. A bit like on here.

Engineer54 · Sep 22, 2013

Tony said:
Not dig at you Mick. I liked the comment as it gave a springboard.

Fortunately my brain is self regenerating and has no need of sustenance from lower life forms.

Where I do feed is in the higher echelons of international engineering debate.

Trouble is the idiots have found us there.

We still have the Electrical Trainee.

“Our 275KV dual OH feeder keep tripping on directional fault. Should we disable the relays?”
“My electrical team have advised me the motors for the fire protection system won’t trip on overload with our present set up. We are going down rate the OL & OC protection. Why was it set so high in the first place?”

Half the time we are trying to translate Pidgin English to something intelligible. A bit like on here.

If this fool is talking about fire pump motors, he'll have a lot of explaining to do in the event of a fire and the bloody fire pumps all start tripping out on overload or overcurrent!! Or even to the fire officer, on one of their irregular fire equipment inspections!! lol!!

GLENNSPARK · Sep 22, 2013

Tony said:
Not dig at you Mick. I liked the comment as it gave a springboard.

Fortunately my brain is self regenerating and has no need of sustenance from lower life forms.

Where I do feed is in the higher echelons of international engineering debate.

Trouble is the idiots have found us there.

We still have the Electrical Trainee.

“Our 275KV dual OH feeder keep tripping on directional fault. Should we disable the relays?”
“My electrical team have advised me the motors for the fire protection system won’t trip on overload with our present set up. We are going down rate the OL & OC protection. Why was it set so high in the first place?”

Half the time we are trying to translate Pidgin English to something intelligible. A bit like on here.