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Search: Posts Made By: oil pan 4
Forum: Lighting 04-25-18, 06:04 PM
Replies: 23
Views: 27,686
Posted By oil pan 4
You can do power factor correction on motors and...

You can do power factor correction on motors and transformers.
All my welders and air compressorsare power factor corrected.
I tried to power factor correct cheap low power factor florescent...
Forum: Lighting 04-25-18, 04:07 PM
Replies: 23
Views: 27,686
Posted By oil pan 4
With a lot of the junk coming out of China it's...

With a lot of the junk coming out of China it's real easy to run well under a power factor of .85 since a lot of the gadgets are running power factors around .5 to .6 and those items include CFL,...
Forum: Lighting 04-24-18, 07:34 PM
Replies: 23
Views: 27,686
Posted By oil pan 4
http://ecorenovator.org/forum/36999-post7.html

http://ecorenovator.org/forum/36999-post7.html
Forum: Lighting 04-24-18, 07:20 PM
Replies: 23
Views: 27,686
Posted By oil pan 4
But they do charge for apparent power. The old...

But they do charge for apparent power.
The old electro mechanical meters will spin the same speed with a 140w 500va and a 500w 500va resistance load.
Some electronic meters I have seen collect "80%...
Forum: Lighting 04-23-18, 01:34 PM
Replies: 23
Views: 27,686
Posted By oil pan 4
Apparent power includes the power supply...

Apparent power includes the power supply inefficiency.
That's why all my lumens per unit of power ratings usually includes apparent power not real power, when the power factor is less than ideal.
Forum: Lighting 04-22-18, 04:27 PM
Replies: 23
Views: 27,686
Posted By oil pan 4
It's costing you 5 watts. Which isn't bad. It's...

It's costing you 5 watts.
Which isn't bad. It's just when some one has a ton of lights like that.
Forum: Lighting 04-22-18, 09:48 AM
Replies: 23
Views: 27,686
Posted By oil pan 4
Problem is that the cheap ballasts tend to run a...

Problem is that the cheap ballasts tend to run a low power factor, which means that they typically use more than 30% 50% more power than the good ones.
Forum: Lighting 04-20-18, 06:41 PM
Replies: 23
Views: 27,686
Posted By oil pan 4
Got another commercial 120-277v F40T12 rapid...

Got another commercial 120-277v F40T12 rapid start ballast.
This time I put it in a 4 foot T5 fixture.
It works. The tube are doing about 44w each.
The old ballasts we only doing about 21w each....
Forum: Lighting 03-18-18, 09:38 PM
Replies: 23
Views: 27,686
Posted By oil pan 4
It appears that I am getting a significant...

It appears that I am getting a significant improvement in light output taking a 34w T8 ballast that I was using on T8 tubes and using that ballast on T5 tubes.
The ballast was using the same amount...
Forum: Lighting 03-14-18, 02:50 PM
Replies: 23
Views: 27,686
Posted By oil pan 4
I retried my T12 ballast to T8 tube experiment...

I retried my T12 ballast to T8 tube experiment again.
Got a free damaged 40w T12 high output rapid start fixture, with no tubes, only about 2 years old so I Figured the ballast was probably good.
I...
Forum: Lighting 03-14-18, 08:51 AM
Replies: 23
Views: 27,686
Posted By oil pan 4
I got some pulled T8 fixtures with dead tubes,...

I got some pulled T8 fixtures with dead tubes, ballasts are good.
I took 2 new T8 tubes and stuck them in the fixture and they lit up with about 25 watts each. They look pretty dull, guess I'm just...
Forum: Lighting 01-28-18, 03:00 AM
Replies: 23
Views: 27,686
Posted By oil pan 4
I tested it some more and found the T8 ballast...

I tested it some more and found the T8 ballast works pretty good in a fully enclosed fixture.
The ballast draws right about 1 amp, or 120 volt-amps, obviously sending up to 40w to each tube.
This...
Forum: Lighting 01-27-18, 12:29 PM
Replies: 23
Views: 27,686
Posted By oil pan 4
I put the T8 ballast powered T5 fixture outside...

I put the T8 ballast powered T5 fixture outside with it around 25F.
The tubes came right on, a little weak at first but warmed up after a few minutes, coming to full brightness much slower than a...
Forum: Lighting 01-27-18, 02:32 AM
Replies: 23
Views: 27,686
Posted By oil pan 4
So I tried the T12 ballasts, I think they were...

So I tried the T12 ballasts, I think they were warn out, the ends got hot but the tube wouldn't come on.

So I pulled the T12 ballast out tossed it in the recycle bin.

Then wired up a T8 ballast...
Forum: Lighting 01-26-18, 11:04 PM
Replies: 23
Views: 27,686
Posted By oil pan 4
Mixing ballasts and tubes

Do at your own risk.
Lethal voltage and current present in on energized systems.
But it seems to work. It all started where I work, had some T5 high output lights with burned out ballasts.
But our...
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