Is that a translucent polycarbonate reflector? It doesn't look quite like an aluminum reflector, hard to tell from the pic. Multi-tap transformer is a good thing.
How high will they be mounted? Height to the bottom of the reflector. If its 15 ft or more, they should work well, any lower than that, you won't like them. If Polycarbonate reflectors, that is better (to my thinking at least) since it helps eliminate "cave effect" by providing uplight that reflects off the inside of the roof, ceiling, etc.
Plan on 3 per 20 amp circuit. You could go 4 as they are 4 amp each, but that is right at the 16 amp max allowed on a 20 amp circuit.
I bought mine about 5 years ago after Wal-Mart and Sams here in ATL converted to T8's for energy efficiency and safety, and paid $40 each for 13 fixtures and got 19 bulbs to go with them. That was a bargain at the time and still is not a bad price down here for such fixtures in good condition with working bulbs.
If you plug and cord them, you really need to use 105°C cord. I got lucky on the cord as my company was throwing away a couple of hundred feet of 14 gauge yellow jacketed (rubber) 105°C cord that had a dead spot or two in it. Cord was nasty dirty and I soaked it in Tide and water (kept the ends out of the water) and scrubbed it and it came clean, and I cut 4 to 5 ft sections to wire to the fixtures. Saved me alot of money.
Certainly T8's are more energy efficient and T5's really provide the light, but for less than everyday use, and low budget, the MH still puts out alot of light.
Charles
