Single Light, Multiple Supplies
 

I have recently installed an outside light which is switched using a
pir, however I want to install a second pir at the other end of my
garden to also switch the same light on when movement is detected. the
second pir has a power supply right next to it so I was wondering can I

use the 2 suplies, 2 pirs and one light safely, my main concern is that

when pir 1 is on then if pir 2 switches on, will the two seperate
supplies
conflict with each other? although both of the supplies are fed from
the same cct breaker, any advice is greatly appreiciated. Thanks

Single Light, Multiple Supplies
 

No. 1 Novice wrote:
I have recently installed an outside light which is switched using a
pir, however I want to install a second pir at the other end of my
garden to also switch the same light on when movement is detected. the
second pir has a power supply right next to it so I was wondering can
I

use the 2 suplies, 2 pirs and one light safely, my main concern is
that

when pir 1 is on then if pir 2 switches on, will the two seperate
supplies
conflict with each other? although both of the supplies are fed from
the same cct breaker, any advice is greatly appreiciated. Thanks

If you are sure about the PIR's being on the same breaker I cant see it
would be a problem, although the light fitting should be labelled to show it
is dual supplied in case others are involved with repairs.

--

Cheers ......... Rheilly P

Where theres a will, I want to be in it.

Single Light, Multiple Supplies
 

No. 1 Novice wrote:

I have recently installed an outside light which is switched using a
pir, however I want to install a second pir at the other end of my
garden to also switch the same light on when movement is detected. the
second pir has a power supply right next to it so I was wondering can I

use the 2 suplies, 2 pirs and one light safely, my main concern is that

when pir 1 is on then if pir 2 switches on, will the two seperate
supplies
conflict with each other? although both of the supplies are fed from
the same cct breaker, any advice is greatly appreiciated. Thanks

If they are on the same breaker and you get polarity right, it'll work.
Safe is open to debate, as if someone disconnects a wire on that
circuit they may get a nasty surprise when they find the supposedly
disconnected wire is in fact still live.


NT

Single Light, Multiple Supplies
 

No. 1 Novice wrote:
I have recently installed an outside light which is switched using a
pir, however I want to install a second pir at the other end of my
garden to also switch the same light on when movement is detected. the
second pir has a power supply right next to it so I was wondering can I

use the 2 suplies, 2 pirs and one light safely, my main concern is that

when pir 1 is on then if pir 2 switches on, will the two seperate
supplies
conflict with each other? although both of the supplies are fed from
the same cct breaker, any advice is greatly appreiciated. Thanks



Just make absolutely certain that it's on the same circuit. The two PIR
units can be wired in parallel, personally I'd run a piece of 14/3 Romex
(assuming north america) from one PIR box over to the other one, that
should let you bring all the connections back to one box.