PIR's with LED's

[eagleeye]

Are you sure you have the LED retrofits correctly wired, if there is a short because of existing ballasts still in place this may cause problems.
That PIR can only handle 200W fluorescent, so may be struggling with the LED inrush and the 400W flood.

Hi Richard I removed ballasts and starters. didn't realise the amount of inrush these led lamps get. The spec of the PIRs is Max 1000 watt incandescent and 300 watt fluorescent. Any ideas of way forward Richard ?

 

[Richard Burns]

Disconnect the light fittings, power up the circuit and test for PIR correct operation (maybe just wiring up a pendant or such if you are lazy like me), if the PIRs are working correctly then connect the flood light and power up again, if this works OK then disconnect the flood and connect one LED bulkhead, try again if this is OK start adding lights until the problem recurs.
Then disconnect all other lights and only connect the last light, if the problem if there then that is the faulty light.
If the fault occurs only when the last light is connected, then you have an inrush problem, then get PIRs with a greater capacity or use a more tolerant breaker.

 

[eagleeye]

Disconnect the light fittings, power up the circuit and test for PIR correct operation (maybe just wiring up a pendant or such if you are lazy like me), if the PIRs are working correctly then connect the flood light and power up again, if this works OK then disconnect the flood and connect one LED bulkhead, try again if this is OK start adding lights until the problem recurs.
Then disconnect all other lights and only connect the last light, if the problem if there then that is the faulty light.
If the fault occurs only when the last light is connected, then you have an inrush problem, then get PIRs with a greater capacity or use a more tolerant breaker.

thanks for that Richard. just hope the rain holds off tomorrow. many thanks

 

[Guest77]

You may well find the flood light is also contributing with the LEDs, the two together too much for the OCPD, I have known of some LED fittings which are supplied from a manufacturer who suggest special PIRs used rather than a standard type, It all depends on the type of PIR, how long it is set for etc etc, what the driver is like inside the light, can it handle short bursts of switching? get CEF to ask the manufacturer the question.

 

[shanky887614]

if your going to spend a lot of timr trying all these things, install a contactor/relay and job done

 

[Had8Lives]

Ive never wired PIRs in parallel, but if they are using a Triac to switch their load im guessing they wont like having a voltage fed into the output. Just a thought.

 

[HandySparks]

Ive never wired PIRs in parallel, but if they are using a Triac to switch their load im guessing they wont like having a voltage fed into the output. Just a thought.

Don't think it'll matter. After all, they'll have the same voltage on the input side, so they'll just have no voltage across the triac.

That said, I always use a PIR with relay output for lighting.