Outdoor lighting wattage

Legacy_user

I want to replace a couple of outdoor PIR Halogen floodlights, they still work, but have corroded badly. All the new ones seem to be led, and are rated in Lumens. What Lumen size should I buy that would give the same brightness as the halogen ones. There not on all the time, just a short burst of about 2 mins if there activated, it just keeps her indoors happy, she’s obsessed with security. Thanks

matelodave

Look at this - http://img1.wfrcdn.com/docresources/8261/7/73854.pdf

a 30watt LED floodlight gives out about the same number of lumens as a150watt halogen floodlight.

I put up two 10watt LED floodlights to replace my 300w halogen and they give more than enough light to illuminate my 25m driveway.

victor2

Some info here:
https://www.any-lamp.com/lumen-to-watt
Generally, a 20W LED spotlight will give a similar output to a decent halogen outdoor spot.

I have a 10W LED PIR spotlight in the garage and it's more than bright enough for that purpose.

System

Thanks for reply’s, I forgot to put in the old Halogen lights were one 500w and the other 250w

telemarks

As you say depends what Wattage your current PIR halogen bulbs are:

• 500W = Approx 8500 lm
• 250W = Approx 4500 lm

In practice I find LED bulbs usually"brighter" per lm,

Might be because halogens do seem to dim a bit with age? Or maybe its the colour of the light that makes the difference

molerat

Maybe because the LEDs are more concentrated whereas the halogens just literally flood in all directions.