Discuss Can't test RCBO as main RCD trips first - what to do? in the Periodic Inspection Reporting & Certification area at ElectriciansForums.net
Agreed..BUT the OP suggested that he wouldn't test HIS RCBO and rely on an RCD ( One by his own admission he can not identify ) to give additional protection, so he either has to falsify the cert or investigate ? Failure to investigate would make him liable sorry
Well if hes prevented from carrying out certain tests due to reasons outside of his control and records this in the cert - this is not neglect , its a limitation.
And as for the details of the device that needs to recorded , he'll just have to look for the BS number on the main rcd.
And i read the op clearly , smart arse.
Your understanding of the legal obligations is sadly lacking.
point 1 - you were being a smart arse with the whole " errmmmm?" and "read the op" comments - dont dish it out if you cant take it.There's no need to make childish comments, just because someone doesn't agree with your view,that's point one, point two is, you claim to have read the OP in which he states... no markings on front of RCD but assume must be 30mA non time delay.and then you say " he'll just have to look for the BS number on the main rcd."
Well he can't find it ? so what does he put in the box asking for the BSEN number ?
Keep it civil
Read the OP ! This isn't a EICR it's a new circuit that he is commissioning ! Yes he is liable if he fails to carry out and document his test results for the circuit HE has supplied, he was suggesting that he was going to neglect the RCBO test results in favour of an upfront RCD, by his own admission he doesn't know the characteristics of so what does he put on the cert ..ermmmm ?
What the hell does it matter which RCD trips for the purpose of the cert?....If there is a requirement for RCD protection on the circuit installed and a test operates at least one within the required time jobs a goodun innit?....Whats all this nonsense about falsifying certs and legal action?????????........confused.
Terminator please quote the reg that tells us we have to have an upfront RCD if all circuits have 30mA protection, I'm not saying your wrong but I can't find that reg.
ATB J
Jimmy - I said 'ought to have' because you can never be sure that someone may come along and change or add a circuit just using an MCB - and if the main earthing resistance had deteriorated (TT is notoriously unreliable) you would lose your disconnection times. It does say in the BGB "the preferred protective device is an RCD" 411.5.2. Then Note 1 says "where discrimination between RCDs is necessary refer to Reg 531.2.9. That is about compiance with the Regs for fault protection using two or more RCD,s in series and that discrimination in their operation is necessary to prevent danger.
In this case I think you need an upfront RCD to meet disconnection times and downstream RCBO,s to prevent danger by the whole installation being knocked out.
I don't disagree with extra protection I was just curious to see if it was an interpretation of the regs or a reg
Eng 54 could you explain to me how you interpret the regs on protecting tails in to an enclosure on a TT ? if the 100mA RCD is in the board, and not external to it how does/can it protect the tails that are from DNO fuse to incomer on RCD ? Not a trick question just a genuine enquiry fella.
ATB J
Reply to Can't test RCBO as main RCD trips first - what to do? in the Periodic Inspection Reporting & Certification area at ElectriciansForums.net
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