just looking to replace & add to old halogen 400/500w security floods around the outside.

If I swap to 20w LED ones, will the seperate controlling PIR detector function properly with a new load of say 40w compared to old of 800w?

thanks

Jim K

Jim K wrote:
just looking to replace & add to old halogen 400/500w security floods around the outside.

If I swap to 20w LED ones, will the seperate controlling PIR detector function properly with a new load of say 40w compared to old of 800w?

thanks

Jim K

Depends.
If there is an audible click from the IR detector when triggered then it
is likely it contains a relay and it will work fine.
If it is silent, then there could be some doubt as some electronic
switches need a minimum load.

You could try a low power filament lamp such as a oven/ fridge bulb
which are 15watt as a test.

On 03/12/2013 20:48, Jim K wrote:
just looking to replace & add to old halogen 400/500w security floods
around the outside.

If I swap to 20w LED ones, will the seperate controlling PIR detector
function properly with a new load of say 40w compared to old of
800w?

If the PIR has its own power supply with both a neutral and live, then
chances are it will work since its probably just a relay doing the
switching.

PIRs that are designed to replace light switches and run without a
neutral probably won't work (since they need to bleed their operating
current through the lamp)

--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/