garage and shed power supply

[gregorabbott]

hi folks, you have probably been asked this many times but any ideas the best way to avoid nuisance tripping? i am running power to a garage using 10 mm swa, the garage is about 25m away from the main fuseboard which is a wylex all rcbo's with 1 spare way. i am then taking power to a shed from the garage using 6mm swa. the shed is about 20m away from garage. the swa will be buried underground. best way to avoid nuisance tripping?

 

[44ALLAN]

There's always a reason for 'nuisance tripping' mate........what are you expecting to trip?

 

[cotty]

best way to avoid nuisance tripping? Bury SWA deeper:joker:

 

[Andy78]

With the set up you describe you will get no nuisance tripping. Now when you connect fittings/appliances to the final circuits, then you might. And you might not.

Like has been said, a bit more detail of what you are expecting to cause nuisance tripping might be helpful.

 

[telectrix]

only use RCBO at house CU if you need to ( i.e. if part of the garage feed is in non-armoured, buried in walls ( 522.6.101)). fit RCD in garage if possible. if correctly installed, you won't get tripping.

 

[markythesparky]

hi folks, you have probably been asked this many times but any ideas the best way to avoid nuisance tripping? i am running power to a garage using 10 mm swa, the garage is about 25m away from the main fuseboard which is a wylex all rcbo's with 1 spare way. i am then taking power to a shed from the garage using 6mm swa. the shed is about 20m away from garage. the swa will be buried underground. best way to avoid nuisance tripping?

Don't power it up!

 

[gregorabbott]

only use RCBO at house CU if you need to ( i.e. if part of the garage feed is in non-armoured, buried in walls ( 522.6.101)). fit RCD in garage if possible. if correctly installed, you won't get tripping.

i thought if i fitted an rcd at the garage and the shed, and something tripped the rcd at the shed, would that not also trip the rcd at the garage?

 

[markythesparky]

i thought if i fitted an rcd at the garage and the shed, and something tripped the rcd at the shed, would that not also trip the rcd at the garage?

not necessarily. depends on the individual tripping times of each RCD. why would you want two? the more rcds the more possible nuisance tripping.

 

[stuartcourt]

it most likely would but other than running from house with no RCD (ok if to regs) and then to garage board and use RCBOs then to shed on MCB then use RCBOs again. seems like a lot of work and money for nothing

 

[telectrix]

it might, it might not. either RCD would trip. sod's law says it would be the one in the house on a dark night pi$$ing down. never fit 2 RCDs in series ( unless the font end one is a 100mA S type.)

 

[ahtyrrell]

MCB at house for sub main (providing its all armoured) Then at the garage have an RCD for the garage final circuits and an MCB again for the shed sub main, then at the shed have an RCD for those final circuits. Basic stuff just keep all the non-rcd protected cables as armoured is the easiest way to comply with the regs

 

[gregorabbott]

thanks for the replies.

 

[Octopus]

With years of experience as a spark and you ask this??

 

[GLENNSPARK]

hi folks, you have probably been asked this many times but any ideas the best way to avoid nuisance tripping? i am running power to a garage using 10 mm swa, the garage is about 25m away from the main fuseboard which is a wylex all rcbo's with 1 spare way. i am then taking power to a shed from the garage using 6mm swa. the shed is about 20m away from garage. the swa will be buried underground. best way to avoid nuisance tripping?

are you an electrician?
if not then bugger off....

 

[Engineer54]

MCB at house for sub main (providing its all armoured) Then at the garage have an RCD for the garage final circuits and an MCB again for the shed sub main, then at the shed have an RCD for those final circuits. Basic stuff just keep all the non-rcd protected cables as armoured is the easiest way to comply with the regs

That about sums it up, it's just that the garage CU won't be a your standard off the shelf garage CU set-up!!
(eg, main switch being the RCD).