OP
uksel
i guess it's each to their own, but i don't think i'd be running SWA without a dedicated CPC, just what i was taught i guess
Discuss Testing SWA in the Periodic Inspection Reporting & Certification area at ElectriciansForums.net
is it possible to cut live 300mm swa cable?:
NO NO NO - i believe you are very wrong there!
the armouring is not designed to be relied on as an earth connection!
the armourings reason for being there is to offer mechanical protection, end of - the earth connection is a benefit. the armourings are there to try and protect the cable from being cut through, which is why you use ARMOURED cable! armour is armour, earth is earth
i'm not saying it can't be used, it is (i believe) good practice to ensure if there is no core to be used as an earth then a seperate earth will be run. the csa of the armourings meets the requirements of the regulations (unless you start using single cores or two core SWA with conductor CSA's of greater than 120mm)
whilst it may be adequate on installation, with 5 years of degredation (depending on the environment) it could easily break down/rust at the glands or any breaks or water ingress into the pvc sheath.
if it's possible i'd always run a seperate earth, and it is in most circumstances i think reasonable to do so
Reply to Testing SWA in the Periodic Inspection Reporting & Certification area at ElectriciansForums.net
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