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And hope they don't pick up on division of circuits at the garage boardDo away with rcbo change for mcb and your garage lights and sockets will be in its own rcd
Discuss stroma assessment this week in the Certification NICEIC, NAPIT, Stroma, BECSA Forum area at ElectriciansForums.net
And hope they don't pick up on division of circuits at the garage boardDo away with rcbo change for mcb and your garage lights and sockets will be in its own rcd
Depends if the assessor is a grumpy gitAnd hope they don't pick up on division of circuits at the garage board
Hahaha... A mate and fellow electrician had his annual AC assessment from NICEIC last month and his assessor told / mentioned to him that quote' it is the new expectation on new installations now, that to avoid unsafe situations in the event of a circuit failing that lighting should be divided between sides of the property rather than floors, so the owner still has lights on each floor in a fault situation'And hope they don't pick up on division of circuits at the garage board
But have you listened to what people have been saying about the rcbo in the house CU? remove that and swap for a MCB. First thing tomorrow or even tonight if you have a store open by you is go get a correct size MCB.hi I have connected the armour into the house earth to cove the swa cable to the shed then in in the shed I connected the gland of the swa cable into the bottom of a plastic through box then connected the plastic through box to separate the earthing types
phil
Hope the niceic assessor showed your mate were it states you have to do this?Hahaha... A mate and fellow electrician had his annual AC assessment from NICEIC last month and his assessor told / mentioned to him that quote' it is the new expectation on new installations now, that to avoid unsafe situations in the event of a circuit failing that lighting should be divided between sides of the property rather than floors, so the owner still has lights on each floor in a fault situation'
so you can have front and back, or left and right but no more upstairs lights downstairs lights on their own circuit.... it might cause poor mrs smith to fall over in the dark i guess. personally i think its a bloody silly idea and i would have told the assessor, no problem, ill put every bloody bulb on its own mcb to keep you happy. if it isn't broke why fix it...
Well I hate to tell you yes he is I will be telling him what I think tomorrow afternoon the sod what size mcb do you think I should replace the rcdo with the cable is 4mm 2 core swa
phil
I agree, hate to be harsh but your assessor tomorrow is going to ask these questions of yourself, so go back to your design calcs and look at the load and any diversity calcs etc then decide on what you think you need.You have designed and installed it so you should know how to size the MCB through calculation.
Is it surface fixed, buried in the ground?Well I hate to tell you yes he is I will be telling him what I think tomorrow afternoon the sod what size mcb do you think I should replace the rcdo with the cable is 4mm 2 core swa
phil
Phil, I think that you are misunderstanding something. The 40A marking on a 30mA RCD does NOT relate to a tripping current. The 40A relates to the amount of current that the switch contacts in the RCD can handle. The RCD does not have any over current protection.#
buried its the 20A rcd to feed in the house to the 40A main switch in the shed cant see any diff to a 60A dno fuse and 100A main switch
As it's 4mm supplying the garage he's got no chance of achieving any discrimination with an appropriate OCPD (mcb type anyway)and probably won't achieve it with the 6amp mcb eitherPhil, I think that you are misunderstanding something. The 40A marking on a 30mA RCD does NOT relate to a tripping current. The 40A relates to the amount of current that the switch contacts in the RCD can handle. The RCD does not have any over current protection.
In the same way, a 100A main switch is just a switch that had contacts that can handle currents up to 100A. That device also provides no over current protection.
Quite honestly your design is not good. If you only have a light and a socket in the outbuilding, you don't need a CU out there. Just the RCBO in the house and a simple switched FCU with a 3A fuse in it for the lights.
But you are where you are now. As above, tske that RCBO out at the house end and put in an MCB big enough to provide discrimination with the 16A MCB in the outbuilding. You need to size it correctly for the size of the SWA cable.
I suggest you get some really nice biscuits for the STROMA guy. You are going to need him on your side!
Reply to stroma assessment this week in the Certification NICEIC, NAPIT, Stroma, BECSA Forum area at ElectriciansForums.net
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