Re: Ballasts and T-8's
Karen A Randall said......
>In the past, the ones I've used are Magnatek's. I can't get the
>serial# off them without disassmbling my lights, sorry. The
>newest ones I have, (supplied to me by the same specialist in
>energy efficient fluorescent lighting, so I'm sure they are
>comparable) are Advanced Electronic Ballast REL-2P32-RH-TP.
>(these are for 2 bulb ballasts, but they are also available for up
>to 4 bulbs)
As you have previously noted the above ballast runs the lamps fine
and the price is right (US$25 or Can$55). Does anyone know which
part is "electronic" and at what frequency it runs? Its heavy
so it must be a hybrid of some sort.
>You might want to check lumen depreciation and see how fast the
>ultralumes fall off. The T8's have a _very_ low rate of lumen
>drop off. (they drop only 20% over their entire life) Also, in
>addition to the much lower cost per bulb, you will see significant
>energy savings if you run a number of tanks.
>Just for your information, the comparable GE bulb is the SPX-50.
I've read that with a high frequency solid state ballast the T-8's
emit about 10% more light than at 120 Hz. You might be cheating
yourself out of a few lumens depending of course upon the frequency
produced by your ballast.
Dave Whittaker ac554 at FreeNet_Carleton.CA
Gloucester, Ontario dwhitt at magmacom_com