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Installing a pir external light
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- Lemon Slice
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Installing a pir external light
If installing a pir-controlled light on an external garage wall, would you have it wired through an internal switch, double-pole isolator, or neither?
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- Lemon Half
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Re: Installing a pir external light
Either. So long as you can isolate it when it needs fixing or replacing.
Be sure and keep the water out, otherwise it will cause nuisance tripping.
V8
Be sure and keep the water out, otherwise it will cause nuisance tripping.
V8
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- Lemon Quarter
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Re: Installing a pir external light
Always handy to have it switched internally. Either for 10 years down the road when the PIR decides that a stiff breezes is a valid trigger, but also most modern ones have a feature that if you turn them off then on again within a short time (I think 10 seconds?) then they stay on until the power is diconnected again - handy for parties or clearing snow from the drive.
Some of our lights here use 3 core + Earth and have an isolator followed by a switch that turns them on permanently by switching a live that bypasses the PIR.
Paul
Some of our lights here use 3 core + Earth and have an isolator followed by a switch that turns them on permanently by switching a live that bypasses the PIR.
Paul
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- Lemon Quarter
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Re: Installing a pir external light
If the cable enters the light from above externally rather than through the back, remember that all such cables should have a drip loop (q.v.)
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- Lemon Quarter
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Re: Installing a pir external light
With the old-fashioned PIR lights they used to have the actual conductor between the PIR and the light available at the terminal block which, as Paul has pointed out, means that using a 3-core and Earth cable to supply it enables the light to be switched ON, OFF, or AUTOMATIC (usually with a 2-gang switch).
The trouble with these new-fangled LED ones is that they usually come with a ready-made 3-core flex attached that only has a single supply, so gives no access to the conductor that is needed to override the light to ON.
We live in not such enlightened times.
Chris
The trouble with these new-fangled LED ones is that they usually come with a ready-made 3-core flex attached that only has a single supply, so gives no access to the conductor that is needed to override the light to ON.
We live in not such enlightened times.
Chris
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