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Discuss Ring main not originating in the DB. in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net

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A

andygosmore

It's obviously not good practice, but is there a specific reg prohibiting a 4mm from the board to a remote rcd a few metres away, & then a 2.5mm ring from the rcd, round the sockets then back to the rcd. I've come across it on a PIR, and unsure whether to pull it up or not.
Thanks
Andy
 

ackbarthestar

Forum Mentor
None as far as I can see. It doesn't feature as a conventional circuit in the OSG, but then if you do the sums and check the installation method and any other correct factors, it should be Ok.

I believe they call that type of circuit a 'loolipop'

A note on the PIR/EICR stating there are loolipops in the house should do it !
 
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jase

Electrician's Arms
in effect the 4mm is just acting as a submain to the RCD and then a ring main off of it, this would be no different than an SWA going down to a remote RCD board in the shed and a ring main coming of of that,
as long as the calcs work out
 
E

Engineer54

For futher reading on this subject, check out ''SIMILAR THREADS'' at the bottom of this page!!
 

Dannyspark

Active EF Member
It's obviously not good practice, but is there a specific reg prohibiting a 4mm from the board to a remote rcd a few metres away, & then a 2.5mm ring from the rcd, round the sockets then back to the rcd. I've come across it on a PIR, and unsure whether to pull it up or not.
Thanks
Andy
I can't remember the exact reg number, but I'm sure their is a requirement to fuse down at any point where their is a reduction in csa. From your description it sounds as though you only have an RCD locally protecting and not a fuse/mcb?
 
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