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Clifford Heath

On 12/12/19 9:40 am, wrote:

I just ordered a couple of outdoor flood lights from Aliexpress. They are 50w led lights and are suppose to put out 4500 lumens. I plan on using them instead of a 500w halogen light. A 500 w halogen light puts out about twice as many lumens, but the eye sensitivity is a log function so the led lights will seem almost as bright.

The lamps I ordered are intended for non portable installations so I will have to put on a electric cord. And they are not super efficacy. They are 50 watt lamps and put out 4500 lumens so do not break any records for lumens per watt. But do win on cost . About $ 3.60 each delivered.

That seems like a very low price. These things need a *substantial*
heatsink and/or forced air - the LED alone will die almost instantly.

We have a fixed 50W LED flood for the back yard, and it's incredible for
that porpoise.

I wouldn't want one in the garage (8' ceiling) because it's just too
much light from one very small region. You get dazzled by reflections
from everywhere and can't see anything in the deep shadows.

I think shop lighting needs to come from many angles - like multiple
long flouro tubes or the LED equivalent. If you have a very high ceiling
(15' or more) it would be different, but then you probably still need at
least four separate fittings.

Clifford Heath