3 63 amp RCDs on same circiut

[Edd]

2 are in the board and the other is feeding that which is also being fed from a 100 amp rcd. cant seem to find any problems with cables and does just nuisance trip.

help plz

how long has this been setup like this? is it a new install? the setup seems a bit problematic and not thought through.. if its an old install i would be getting th IR tester out... if new i would be getting the install sparks out!

 

[king_11]

It's defo not 100 ma. It's 100 amp. It is the main switch to a 3phase board and one phase goes below to a 63 amp with 45 amp breaker like a mini board . The that goes to a dual Rcd board

 

[alarm man]

how long has this been setup like this? is it a new install? the setup seems a bit problematic and not thought through.. if its an old install i would be getting th IR tester out... if new i would be getting the install sparks out!

ot it could have been installed by a spark with a fear of electric shock..

 

[king_11]

how long has this been setup like this? is it a new install? the setup seems a bit problematic and not thought through.. if its an old install i would be getting th IR tester out... if new i would be getting the install sparks out!

It's new . Last year . Yeah seems they have messed it up. It's been like this awhile but the install has never been used properly just now and then

 

[nickblake]

with out looking at it its so hard to see what you have like i have already said a Picture paints a 1000 words

 

[Edd]

thought I had the install setup in my head,, but im missing things?? 100amp 3 phase main swith with no RCD that sound normal? to a 63amp with 30ma rcd? which is where? off to a duel board... sorry im not getting it now.. dont get frustrated kay, but a few pics may really help here as your termnoligy seems a lil off m8,, in the politest manour..

ps my spelling seems to suck

 

[king_11]

thought I had the install setup in my head,, b ut im missing things?? 100amp 3 phase main swith with no RCD that sound normal? to a 63amp with 30ma rcd? which is where? off to a duel board... sorry im not getting it now.. dont get frustrated kay, but a few pics may really help here as your termnoligy seems a lil off m8,, in the politest manour..

ps my spelling seems to suck

can't seem to upload pics.

100 amp is Rcd mate. To a 63 Rcd below board and then off to a dual Rcd.

 

[Octopus]

I think the only way forward would be a couple of pictures ... and what test equipment do you have at your disposal?

 

[king_11]

I think the only way forward would be a couple of pictures ... and what test equipment do you have at your disposal?

Fluke multimeter

 

[Des 56]

2 pages of compressed descriptions of the install and questions on that set up in each post,my eyes ache

 

[Edd]

so we got a 100amp 30ma rcd at the front end (3 phase)( thats a pain in the butt too start with),, if this is so then get rid of the others, their not needed.....wonders why they were fitted.. if its not tt then get rid of the front end rcd and use rcbos for the circuits that req rcd.... sorry if im not more helpfull...

 

[alarm man]

Fluke multimeter

decent meter fluke,you may need more than that tho

 

[king_11]

so we got a 100amp 30ma rcd at the f ront end (3 phase)( thats a pain in the butt too start with),, if this is so then get rid of the others, their not needed.....wonders why they were fitted.. if its not tt then get rid of the front end rcd and use rcbos for the circuits that req rcd.... sorry if im not more helpfull...

ok that's what I was thinking . I can take the rcds out and just use the main switch as isolation in dual board

 

[king_11]

Yes it is tt.

 

[Edd]

sorry went to bed!,, If its TT then the RCDs are required, but not all of them I would be looking at trying to remove the 3 phase RCD and fit a main switch then fit rcbo's to final circuits that are fed from the 3 phase board, and an MCB to feed the other RCD protected board..hopefully there aint many ways on the 3 phase board. at least this spreads the loads and any faults will trip the approprate RCD.