motion sensor question

[jarja]

I have a quick question about this item... it's a simple motion sensor for lighting. It's rated for 500W incandescent load. I want to use it for some fluorescent lighting. It's for 8 4ft t12's, I can't recall their W rating, but it's def less than 500 total. I just want to know how the difference from incandescent to fluorescent(magnetic load, I believe) would effect this. Will it still work for my needs?

I assume it will, but want to make sure before I order it.

Thanks

Amazon.com: Cooper Lighting MS180W 180 Degree Replacement Motion Security Sensor Floodlight, White: Home Improvement

 

[Richard Burns]

Your fluorescents are probably 58W each unless they are doubles so a total of 464W. Generally you can switch about half the incandescent load when using florescent so you will need to increase the load rating up to at least 1000W.

 

[Sickmick]

Isn't there some issue with using electronic switching for flourescent lighting? I'm sure there is but can't remember?

 

[telectrix]

use the sensor to energise a contactor/relay. as the coil is inductive, you may have to fit a capacitor across it.

 

[mamad]

Hi
Anybody know's why PIR motion sensor light is on when switch is off ?

 

[telectrix]

wired wrong?

 

[sythai]

Hi
Anybody know's why PIR motion sensor light is on when switch is off ?

Cheap 'B&Q' dodgy PIR.... (if so make sure you replace with a Steinel)

 

[AndyOz]

Jaria

Richard is absolutly correct in the loadings therefore this is not adaquate without the use of a relay or contactor. In your position I would also look at reducing the load by using T8 or T5 tubes.

 

[FAA Greenie]

Something along these lines for the OP. Other outlets are available.....

Steinel - 140 Deg PIR 14Mtr 1kW Load - Black

 

[mamad]

wired wrong?

Thank's

 

[HandySparks]

Jaria

Richard is absolutly correct in the loadings therefore this is not adaquate without the use of a relay or contactor. In your position I would also look at reducing the load by using T8 or T5 tubes.

Think he's probably finished the job by now mate.

Welcome to the forum.

 

[Darkwood]

Are you flourescents going to be switching on alot with the PIr or will it just be a few times a day... frequent switching can drastically reduce the lamp life and in some cases cost more in lamp replacements then energy saved.... needs thinking about before you set this up.



YEP! just time tagged the OP's post ...what the heck is this back in the forum for???

 

[FAA Greenie]

Just realised how long ago the OP was!!! Who keeps dragging these up? Hope the job is finished now or is everyone still in the dark......