Published: 9 March 2012
Category: Q&A
Jamie Harrison asks about earthing a sub-distribution board using T&E cable as the CPC. His question is answered by the ECA (Theme – Cables and Wiring):
This Q & A is one of thousands posted in our Technical Expertise area, and answered on a daily basis by our Voltimum Experts.
Question: If one feeds a sub-distribution board, say to an internal garage or workshop, and if this is (say) dependent on the load, will a PVC 6mm or PVC 10mm twin & earth cable be adequate as the earth circuit protective conductor (CPC), as long as all the test parameters are satisfied?
Answer: Normally yes, as long as the equation in 543.1.3 is satisfied and the required disconnection time is met.
To see many more Q & A in Voltimum UK's Experts Area, please click on the link:
www.voltimum.co.uk/consult.php?universe=consult.index.questions