Outside Light With PIR

[irishsailor]

Guys

A quick question, I have an outside light controlled with a switch inside, iI has sensor fitted which works.

However when I switch the light on from the switch it flashes on and goes off once amd then the sensor works fine is this a loose connection or is it a timing issue??

Also the lighting circuit is on a BS3036 5A fuse what sort of Zs reading should I be getting?? Do I need to remove bulds etc to do a Zs test??

Regards

Chris

 

[boatnik1]

Hi Chris,
Any of the PIR lights that I have installed work this way, so It would seem to be normal.
Also by switching the switch on and off a couple of times quickly the lamp should stay lit , should you need to extend the lit period for any reason without altering the normal time set.
Dunno about the Z's

 

[irishsailor]

So a quick flash is nornal, then goes off thought it was wired incorrect of a loose connection

Thanks

 

[Graeme Harrold]

So a quick flash is nornal, then goes off thought it was wired incorrect of a loose connection

Thanks

Its normal, confidence test when powered up

 

[stretchyboy]

Zs would depend on the length of cable etc
As a guidline if your Ze is 0.15 then your Zs in a typical domestic length could be between 0.3 and 1 ohm but this is purely a guestimate. Usually better to get your R1R2 and then Ze and your will have a better idea from them.