INteresting Topic
To get T5-HO performance out of a T8 fixture, the high-lumen / high-performance lamps
are usually specified. These lamps provide more lumens (approximately 15% more than
standard 700 series lamp) without drawing any additional watts; providing the highest
lumens per watt of any fluorescent lamp. Couple these lamps with a high ballast factor
ballast to safely overdrive the lampç—´ output another 12-15%. With this lamp and ballast
combination you will have a fixture capable of producing 3658 lumens per lamp. The
700 series lamps are as common today as the T12 lamps were yesterday. Their price
is very low and they can be found in most hardware and DIY stores (Home Depot,
Loweç—´, etc.). The higher performance T8 lamps, and for that matter, the T5-HO lamps,
are only going to be stocked by lighting and electrical distributors. Keep in mind; a wellstocked
distributor may stock all of the lamp types we spoke about earlier, so be
specific about what you want.
http://www.lightingassociates.org/i...s/FAQs_T8_or_T5-HO_-__Which_should_I_use_.pdf