came across this today

[mswesty]

customer said they had this fitted a week ago.
no cert was issued
"things keep tripping the RCD thing out!"
they rang the original installer he said theyre sytem was old and thats ot thier fault.
bond to gas =none
bond to water = none
just amazing
look at the lower bar(s)

 

[Mark_Burgess]

Stop dissin my work man!!
That is seriously rubbish.

 

[Mark_Burgess]

So what was tripping it out then?

 

[jimmymac]

Nice, have you got the job of sorting it out? If so, how much you quoted?

 

[telectrix]

that photo is terrible. the CU is bad also.

 

[mswesty]

the old couple said that random things make the rcd trip "they coulnt put thier finger on it"
she rang and asked for a cert and he said his friend might be able to do one.
one of the ring circuits was open/broken not mentioned to her
main earth tns was too small
cooker 6mm 40a breaker
(can you see the buzz bar problem?)

 

[nickblake]

well looking at the picture the bus bar covers both rings the neutrals for these are in opposite neutral bars that would cause the problem

 

[telectrix]

it looks to me that 1 RFC has it's N in N bar 1, and the other RFC has it's N in N bar 2, but they are both on the RCD.

 

[telectrix]

damn, nick beat me there, if we are correct, that is.

 

[mswesty]

the Outgoing live terminal of the main switch is feeding all the breakers directly via the buzz bars .
the rcd is being fed from its top and bottom terminals as its conected to the already live buzz bar and also being fed by the flylead from main switch to the top.
however if you follow the current path of the second ring main the neutrals are connected to the right neautral bar so its only route out is via the N of the RCD! hence the rcd trip fault .
if that makes sense???

 

[telectrix]

looks like something set up by rogue traders to catch you out quoting a rewire for £9000 to an elderly couple. no spark could call himself a spark after doing that!

 

[TaffyDuck]

Would love to know what they charged. Board is about 40 quids worth tops.

 

[mickys86]

I'm the first one to moan about people at my college not knowing what they are doing.... After seeing that maybe I should lay off em?? Haha

 

[robsparky1975]

Perhaps this could be moved to the CU installed for £150 thread,as this is what i would expect to see and no bonding,cert etc,it was done by dave down the boozer after 8 pints of stella,shocking.

 

[Sparky Ninja]

the Outgoing live terminal of the main switch is feeding all the breakers directly via the buzz bars .
the rcd is being fed from its top and bottom terminals as its conected to the already live buzz bar and also being fed by the flylead from main switch to the top.
however if you follow the current path of the second ring main the neutrals are connected to the right neautral bar so its only route out is via the N of the RCD! hence the rcd trip fault .
if that makes sense???

I dunno if it's my eyes, but it looks to me as if the busbar has been cut. It looks as if the busbar feeds circuits 1 and 2 directly from the main switch, and circuits 3, 4 and 5 are supplied from the RCD.
However the neutrals from circuit 3 (assuming correct sequencing) have been connected to the neutral bar that is not on the RCD, so any introduced load on this circuit would trip the device.