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oil pan 4 · 03-08-18, 04:06 AM

I put my kill a watt meter on one of my T5 fixtures, it runs about a .99 power factor.
These commercial/industrial power supplies are very efficient.
Commercial/Industrial users demand highest possible power factor and they get it.

In other news I found some very efficient LEDs, some 100w replacement's that are making 800 lumen for a total of 95 lumens per volt•amp.
But they're double the price of the cheaper 50 to 60 lumen per volt•amp bulbs but right about double the efficiency.
The much more efficient dimmable LEDs are about $10 each on clearance at lows, originally they were $13 each. The cheaper ones are 4 to 5 dollars.
From a $/lumen stand point this is pretty horrible.
But for indoors where you have a few fixtures and only need some light they are perfect.

03-08-18, 04:06 AM	#32
oil pan 4 Land owner Join Date: Nov 2012 Location: NM Posts: 1,026 Thanks: 12 Thanked 127 Times in 107 Posts	I put my kill a watt meter on one of my T5 fixtures, it runs about a .99 power factor. These commercial/industrial power supplies are very efficient. Commercial/Industrial users demand highest possible power factor and they get it. In other news I found some very efficient LEDs, some 100w replacement's that are making 800 lumen for a total of 95 lumens per volt•amp. But they're double the price of the cheaper 50 to 60 lumen per volt•amp bulbs but right about double the efficiency. The much more efficient dimmable LEDs are about $10 each on clearance at lows, originally they were $13 each. The cheaper ones are 4 to 5 dollars. From a $/lumen stand point this is pretty horrible. But for indoors where you have a few fixtures and only need some light they are perfect. Last edited by oil pan 4; 04-22-18 at 11:55 AM..