What's the correct CSA for immersion heater cable? TLC advertise 1.5mm^2 as being suitable for 16A
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the poxy little 1m lengths screwfix & toolstation do are 2.5CSA of immersion heater cable
Mar 18, 2006
3 Replies
Assuming you mean the final flexible cord connection, 1.5 mm^2 is usual for a 3 kW domestic heater.
That agrees with Table 4H3A in BS 7671.
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though the poxy little 1m lengths screwfix & toolstation do are 2.5
Seems a bit OTT at 25 A rating...
On Sat, 18 Mar 2006 22:25:08 GMT someone who may be John Stumbles wrote this:-
How well insulated is the cylinder and pipework?
Yes, the flex.
Thanks. Sorry to be a lazy botty but I've no idea where my 7671 or OSG etc are ATM (SWMBO's been tidying up :-(). Bloody Luddite IEE, it's the only BS I've got on paper: all the others I need are PDFs on my HDD.
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> though the poxy little 1m lengths screwfix & toolstation do are 2.5
I guessed 20A by comparison with T+E. I thought it was OTT but wondered if I was missing something.
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