Possible interlinked RFC's

[wallyanker]

Hi All

Friend of mine asked me to disconnect their house alarm as it wouldn't shut up (being going off all night, neighbours loved it!!). The alarm is never used so just wants disconnecting.

Disconnected back up battery and then went to disconnect it from the socket (not on a FCU, spurred direct from the nearest socket). To isolate the power to this socket, I had to isolate BOTH B32a MCBs labelled "Down Sockets" and "Up Sockets". Removed the cable, alarm now off.

I said I would go back and investigate this tonight, anyone give me a heads up before I get there? Never come across this before but am guessing it has something to do with the Lives crossed in the MCB's??

Thanks
Pete

 

[ackbarthestar]

That might be the simplest solution, but the interlink might be elsewhere between the rfcs. So it may take a little longer than a few minutes to rectify

 

[truckster]

As above but I would hazard a guess that you are right and the wrong legs have been stuck in together

 

[sedgy34]

Have you heard the term DOGGED IN cause that's what you have there in the mcb

 

[Top Cat]

Have you heard the term DOGGED IN cause that's what you have there in the mcb

Don't really want to know what you get up to late at night, down deserted lanes!Lol

 

[ackbarthestar]

Don't really want to know what you get up to late at night, down deserted lanes!Lol

If I give a Friday night response to that ,they will ban me for sure!

 

[wallyanker]

Have you heard the term DOGGED IN cause that's what you have there in the mcb

Not heard of that, is it like it sounds or related to electrical wiring??...lol...

Please explain

 

[telectrix]

never heard it myself, but would imagine it's that the 2 rfc cables (4 ends) have just been dogged into 2 breakers without identifying which is which.

 

[wallyanker]

Just been and yes, wrong ends in the breakers. Thank you people :clap:

 

[sedgy34]

Don't really want to know what you get up to late at night, down deserted lanes!Lol

You really set yourself amongst the pigeons don't you

 

[ackbarthestar]

You really set yourself amongst the pigeons don't you

I'm baffled to understand where dogs and pigeons come into crossed phase conductors on a ring !

I have tried all angles and the metaphor just doesn't fit .

 

[MarkieSparkie]

Has the property been partially rewired?
As an example of what you may encounter:
A recent EICR revealed that the electrician employed by well known kitchen fitters had reconnected the new kitchen accessories in to what he probably thought were two adjacent ring drops (4 T+E cables) on the the old downstairs RFC. Unfortunately for the client he had mistakenly and effectively connected the out-going leg of the downstairs RFC to the out-going leg of the upstairs RFC and the in-coming leg of the downstairs RFC to the in-coming leg of upstairs RFC at a point in the far corner of the kitchen. Creating a large figure of eight hybrid 'RFC' with two MCBs, a neat booby trap for any unwary electrician at a later date. Both MCBs had to be switched OFF for the hybrid 'RFC' to be dead. If either MCB only was switched OFF the other MCB powered a pair of short and long live radials.:banghead: The EIC for the work was of course a total work of fiction. :cuss: The job was later corrected by us, reinstating the upstairs and downstairs RFCs and putting the kitchen on it's own RFC.