Sierrasparky
Senior Member
- Location
- USA
- Occupation
- Electrician ,contractor
I recenlty was looking at a job that called for LED wall paks by RAB. They are 70 watt /91 input watts lumens =5.4k lumens. RAB claims they will replace a 400w MH wall pak. OK fine.
So what I don't get is that the LED has a 60 lumens per watt (LPW) and the 400w MH has 89 LPW. OK
Then my question is how can the LED replace a 400 MH , and how can it do this when the total Lumens are substantial less than the 400w MH @40k lumens
SP
So what I don't get is that the LED has a 60 lumens per watt (LPW) and the 400w MH has 89 LPW. OK
Then my question is how can the LED replace a 400 MH , and how can it do this when the total Lumens are substantial less than the 400w MH @40k lumens
SP