1800watt Heater, size cable needed

dancla · 03-12-2012 8:14pm #1

Hi, I want to wire an 1800w outdoor heater, what size cable/wire shpld I use?
Also I will be wiring through a PIR, Ihave a new 1000w rated pir, will I get away with this or should I go get one with a higher rating?

meercat · 03-12-2012 8:25pm

not sure this job is for you but to answer your question
3x2.5 nymj cable should suit
you should put a contactor in (switched by the pir)

03-12-2012 8:53pm

As meercat has said the PIR is not rated for a load this large. Not many would be. Normal practice would be to get the PIR to switch a suitably rated contractor.

3 x 2.5 mm sq. NYMJ is the minimum sized able that will suit. A long cable run will require a larger size. Remember this cable type is not UV rated so it can only be used outdoors if suitably protected from the sun (in conduit for example).

meercat · 03-12-2012 9:03pm

2011 wrote: »

suitably rated contractor.

Bruthal · 03-12-2012 9:07pm

meercat wrote: »

Will it be a registered contactor?

meercat · 03-12-2012 9:19pm

robbie7730 wrote: »

Will it be a registered contactor?

that would be suitable;)

Bruthal · 03-12-2012 9:20pm

There is too much laughing and joking going on. This is a serious forum:D

03-12-2012 10:25pm

Just a few points:
1) As work is thin on the ground for electrical contractors I think that any work that I try to drum up for those concerned should be appreciated.
2) I do the jokes around here

Bruthal · 03-12-2012 10:26pm

2011 wrote: »

2) I do the jokes around here

Ive been saying that for years:pac:

I think I must point out the difference between contractor and contactor, on the slight off chance you missed it:)

1800watt Heater, size cable needed

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