Discuss Am2 socket circuit help!! in the Electrical Forum area at ElectriciansForums.net

Pete999

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It’s a 32A rcbo it’s defo a ring wired in 2.5mm
I was responding to the post Whereby the poster said it it's a 32 Amp mcb then it's a ring, Radials will be 20 or 16 Amps which is misleading. If it says wired in 2.5mm2 and the OCPD is 32A then you are right An RFC Ring Final Circuit.
 

Rob

Control System Engineer
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During the AM2 exam you will be presented with 3 already mounted sockets and a fused connection unit which will have to be wired in a ring circuit with the exemption of one of the sockets which will have to be wired as an un-fused spur from one of the other sockets.

To do this simply follow the diagram below.

You will be required to use 2.5mm2 single core cables which must be placed in to the middle part of the compartmental trunking.

The wiring is really simple. You will start in the CU with 3 lengths of single core cables (brown, blue, yellow-green) from the protection device to the nearest socket. From here you will continue to the next unit which is the fused connection unit. From here to the last socket and from there back to the protection device in the CU. After this you will have to connect another length of 3 single core cables from one of the sockets to the IP rated socket which will be your spurred socket.

Taken from: 13A Socket Outlet Ring Circuit (AM2 Exam) | SparkyFacts.co.uk - http://www.sparkyfacts.co.uk/AM2-Exam-13A-Ring-Circuit.php

An from what I remember is the same as when my apprentices did it a few years ago.

Cable size, is important. As it is in singles, they have specified 2.5mm for all three conductors.
 

KennyKen

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363
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Australia
Jez more acronyms than American terminologies.
I would of got a bollocking. I used to call “RFC’s” ring mains. “SFCU” Spurs.
Line was Live.

Just out of curiosity how much has the AM2 changed?
When I done it there was cable tray. Pyro and steel conduit to do. DOL starter for motor. Pyro for Fire alarm sounder. Pyro for motor feed. SWA feeding the D/B. Plus 2 way switching in Singles through trunking into the conduit we had to make up
 

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