DIY Doctor UK DIY Forums

Hi,

Another question regarding changing the CU in a flat. The CU is fed from the meter and main fuse in a meter room through the wall in a SWA. This is currently terminating on a metal CU with an appropriate gland. I would prefer to use a new plastic CU. Are there any suggestions or regluations regarding how I can terminate the SWA on a plastic enclosure? It does not look sturdy enough to handle a gland and I am struggling to understand what I need to do in order to use the existing SWA cable.

Thanks ... Peter

Hi P.C.
there should be a 'banjo/teardrop' plate on gland to allow an earth bolt to be fitted, however they can loosen on plastic & we use something called a Piranha back nut from most reputable wholesalers which are simply a very thick locknut to replace the existing one but they have a tapped hole in each face of the nut to take a lock grub screw in one and a screw/star washer for a crimp lugged cable to another.
These come in sets of 4 or 10 in a bag c/w allen key etc. well worth carrying in tool box, regards
SPARX

[quote="peterconnolly"]Hi,

Another question regarding changing the CU in a flat. The CU is fed from the meter and main fuse in a meter room through the wall in a SWA. This is currently terminating on a metal CU with an appropriate gland. I would prefer to use a new plastic CU. Are there any suggestions or regluations regarding how I can terminate the SWA on a plastic enclosure? It does not look sturdy enough to handle a gland and I am struggling to understand what I need to do in order to use the existing SWA cable.

Thanks ... Peter[/quote]

PETER
IF U TERMINATE ON A PLASTIC ENCLOSURE AND THE ARMOURED
IS 2 CORE THEN THE EARTHING RING OF THE GLAND MUST BE CONNECTED WITH AN EARTH CABLE LUGGED AND BOLTED AND RUN TO THE EARTHING TERMINAL OF THE PLASTIC CONSUMER UNIT.
ALSO THIS IS NOTIFIABLE WORK AND WOULD REQUIRE A PART P REGISTERED ELECTRICIAN
BLAKEY1963