208V is the same as 240V - no common wire, just two hots and a ground. Switching it to 120V should still be simple though by making one of the hot leads a common. The entire circuit would need to be changed at once, and with the reduced load of CFL bulbs it could probably be combined to one breaker instead of the two it would be on now. You'd just have to add the total amps used.2Biz said:You should have a hot wire, common, and ground for the 208v so switching it to 120v should be easy.
You can have 208 without the high leg.Sorry, but 208v is not the same as 240v. Do a search on "Wild Leg" 3 phase. It consists of (3) phases, (2) 120v legs, a 208v leg, and ground. I know, I have it installed in my ER that runs my pump stands. I also have a seperate service for single phase 120v and 220v applications. This "Wild Leg" or "High Leg" service, see here: http://en.wikipedia.org/wiki/High-leg_delta was designed to run as 3 phase allowing you to power 120v motors/lights, 220v single phase motors ( (2) 120v legs) , 208v single phase lighting, and 3 phase motors in the 9 wire Delta Configuration.
This was one of the first things I had to learn when I bought the wash. I had a bad 5hp pump motor and needed to replace it. Checking the 3 phases didn't make sense to me since there were (2) 120v and (1) 208v center tap or leg. Since Mr Clean said he had 208v lighting, I was assuming he had the "Wild Leg" 3 phase like mine since you have to have it in order to power 208v single leg single phase lights.
I meant here in our region. I've worked on literally hundreds of washes and have never seen one with a leg that reads 208V to ground. It's either 120V on all three or 120/120/277. As I said before, you must have a different 208V than we do.2Biz said:BTW… I DO get 208v on a single leg on my service to ground. Re-read the “Wild Leg” or “High Leg” link I posted earlier and see if you still agree with your comment “You don't get 208V on a single leg”.
If I were to rewire one of the Scottsdale fixtures to operate 208V, I would have to use a double-pole breaker and run two legs to the fixture and a ground (No common). If it had the typical "high-leg" 277V then I could use that leg, a common and a ground in the same way you can use your 208V leg.2Biz said:And tell me if you see any wiring diagrams that “Power” the ballast/transformer using (2) hot legs and a common to make 208v? Look at diagram “D” for instance. The transformer can be wired with 120v, 208v, and 240v. If you wire 208v, you use a common and (1) 208v lead.
Interesting....When we use a double pole breaker and run two legs of 120v to anything, electric motors, dryers, ranges, hot water heaters, etc., we get 240v accross the two legs. Not 208v...If I were to rewire one of the Scottsdale fixtures to operate 208V, I would have to use a double-pole breaker and run two legs to the fixture and a ground (No common). If it had the typical "high-leg" 277V then I could use that leg, a common and a ground in the same way you can use your 208V leg.
I've been replacing the 320W bulbs and ballasts with 250W in the Scottsdales and the visible reduction in light output is minimal. I use a coated bulb with a warmer light; even though it's rated less light output the CRI is better. There's not a single CFL that will fit in these fixtures and put out more than a fraction of the light you'd want - I just ordered four 42-watt CFL's for another purpose and I plan to test-fit them into one Scottsdale to see how it does. I did this once before with the regular 23W you can get at Sam's until I could get a ballast in - the light wasn't anywhere near enough, but it was better than leaving it dark over the changer.Kevin Reilly said:A 7-bay that we have has Scottsdale in the vac area and it is daylite, but expensive as you know. In reading your thread you or somebody addresses that in that we can also change that. What you recommend?
Kevin, Buy a couple of these 85 watt bulbs and give them a try I think you’ll be surprised at how much light they put out. http://www.1000bulbs.com/product/8254/FC85-S50OD.html2Biz I've read with interest your thread on lighting and we are now looking into it.
I've read Soapy's suggetion regarding using Full Spectrum (daylite) in the 5000 color range.
My dilema will be to sample some although I want the brightest (as everyone does), and in our bays (we have 25 bays) w/4 175W MH per bay plus (I think) 1 fixture front and rear of each wall or other wall which equates to about 150 fixtures. My daughter Julie will give me a count in the next couple of days.
My thoughts are to try the 85's in the fixture if they will fit. They are mogul base in all but one location.
Were you able to buy the small base from the light supplier to redo your fixture.
I am really excited about putting in new lighting and powering in direct with 110V as opposed to the transformers and mess that is in the fixtures now. I will probably do what you did just to make sure and do a couple of bays to compare.
In the vacuum areas we have carports over 4 locations. 3 locations are fluorescent and work fine. A 7-bay that we have has Scottsdale in the vac area and it is daylite, but expensive as you know. In reading your thread you or somebody addresses that in that we can also change that. What you recommend?
With all that I've said, what is your recommendation now that you have started this at your wash and if anybody else wants to chime in on this question, please do!