Bit of help please....if possible

[sythai]

Just pricing up extension with a fair bit of external electrics.

The part which I need a hand on is:

9 x outside wall lights around building (not decided on what type / wattage etc)
4 x PIR wired in parallel to control these (one on each corner)
2 x over-ride switches inside

Been looking on Steinel website @ IS300, just not too sure on the technical bit - will it work..... if I read it correctly it states that

- 2000 W max. (resistive load, e.g. filament bulb), - 1000 W max. (uncorrected, inductive,
cos φ = 0.5, e.g. fluorescent lamps) - 1500 W max. (series corrected) - 500 W max. (parallel corrected, with C ≤ 45.6 μF) - electronic ballasts, capacitive,
e.g. low-energy lamps, max. of 8 each. C ≤ 176 μF
3-sensor technology of the IS 300

So limited to 50w / light, but it also states that you can only use 8 low-energy lamps ? So cant go down that route or can I ?

And will 4 PIRs normally work in parallel with each other, have done it 2 in parallel but never 4 ?

Help / advice please

Many Thanks,

Sy

 

[telectrix]

Right I didn't realise that thank you Tel. Never used a capacitor before, how do calculate what size/type required please ? and what would be 0.1 - 0.5mfd (bit too technical for me sorry) Last think I want to do is wire it all back there and it dosent work out as planned

the capacitor would be to counteract the inductive coil. some PIRs are OK with inductive loads, but some give nuisance tripping. i would try a 0.2 mfd ( 300V ) non electrolytic. only a few bob from maplins. what it does is bring the load power factor closer to unity. if you could measure the inductance , you can calculate the capacitor value. ( long time since i've been there so can't remember the exact formulae.