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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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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 |
#2
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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. |
#3
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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 |
#4
Posted to sci.electronics.repair
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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. |
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