4xT5 on OLD 660?

[Scleractinian]

Digging around in the basement, I ran across yet another old IC 660 that I had forgotten about. :)

This one is fairly old ( serial # 97272 ). Based on a few posts about older IC's possibly having an issue w/ T5's, I thought I'd verify my application options before firing it up.

Please comment on the lamp arrays below and let me know if this ballast will have issues:

3x39w T5HO
4x39w "
2x54w "
3x54w "
4x54w "
2x80w "
3x80w "

I assume that I would use the same wiring diagram for a given number of lamps, regardless of their diameter (i.e. use the same circuit for 4xT5 as I would for 4xT12)?

Also, , and finally, I realize that the T5 lamps will be warmer than T12s would when driven by the IC, but will the ballast temp be warmer?

TIA!

[IceCap Service]

The older model 660 will work just fine for all your proposed applications. Its limit would be 4 of the 54 watt T-5 lamps or 3 of the 80 watt T-5 lamps.
The ballast will be a bit warmer but just mount it to a heat sink and you should be fine.

Wiring diagrams will be the same as for the T-12 lamps.

[Scleractinian]

Thanks for the quick reply!