Discuss CPC for shower! in the Australia area at ElectriciansForums.net
Hi guys, i just changed a 8.5kw electrical shower for a friend, the live is 6mm2 and i believe it is fine, the only thing is the cpc, looks like 1.0mm, at most 1.5mm, i checked codes, but still not sure about it, is this cpc ok?
cheers
First response to a post for me. Assuming both protective and line conductors are copper, then according to table 54.7 in regs (pg 130 in mine), suggests csa of protective conductor should be (at least) same as line conductor?
you beat me to itUse the adiabatic equation.
Hi,
Whats the length of the cable and how is it run ( under floorboards, clipped direct etc ).
You said its old cable, is it the old colours Red, Black ??
You also mentioned 8.5kw shower, so that equates to 36.95 amps ( ib ), so depending on your fuseboard, you need at least a 40amp mcb.
So work out your current -carrying capacities, volt drop and adiabatic to get correct cable selection. You should really know what size cable you have selected, as this can have a big effect when the shower is on ( over heating the cable etc ).
Hope this helps,
Sav
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