There are a lot of knowledge on this forum. Learn something every day. thanks mike
--- Brad Waller <[EMAIL PROTECTED]> wrote: > There you go, an even better answer than I made, > because you have real > numbers and light output (which I forgot). > > Brad _____ > > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On > Behalf Of Dean Vandergriff > Sent: Friday, November 03, 2006 11:18 AM > To: The Chevelle Mailing List > Subject: Re: [Chevelle-list] off topic garage > lighting > > > > Harlan, > > I do lighting design work for a > fluorescent fixture > manufacturer. There is more than one type of both > T12 & T8 lamps. If your > friend is using an F96T12HO lamp, two of them have a > system wattage of 216 > watts & around 9000 lumens per lamp. F96T12 > slimline is actually a 75 watt > lamp with a system wattage of 158 & around 6300 > lumens per lamp. These are > both 8', T12 lamps & my wattage figures are based on > magnetic ballasts (most > likely for older fixtures). Incidentally, both of > these lamp types are > rated for 12000 hours per lamp. > > T8 slimline lamps are a 59 watt lamp & > have a system wattage for > two lamps of 110 watts, are rated at 5950 lumens per > lamp, & a 20,000 hour > life. The 86 watt T8 HO has a system wattage of 160 > watts, 8200 lumens per > lamp, & 18,000 hour life. > > The 4', 32 watt T8 lamp is rated for > 20,000 hour life & you can > operate 4 of them on a single ballast at 114 watts & > 2950 lumens each. > > All of my figures for the T8 lamps are > based on solid state, > electronic ballasts. Four of these is a good > replacement for two of the > 8ft, T8 slimline lamps. You can get the same light > output at about the > same energy cost & you're buying a less expensive > lamp that's easier to > store & dispose of since it's only a 4' lamp. > > Bottom line, be sure of what you're > comparing. You could > replace T12HO with T8 slimline fixtures & save about > 50% on electricity, but > then you'd only end up with about 2/3 of the light > that you started with. > > > > Regards, > > > > Dean Vandergriff > > Applications Manager > > H.E. Williams, Inc. > > > _____ > > > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On > Behalf Of [EMAIL PROTECTED] > Sent: Friday, November 03, 2006 12:25 PM > To: [email protected] > Subject: [Chevelle-list] off topic garage lighting > > > > hi wondering if there are any electricians out there > who know if this is > true, a salesman told my friend he could switch his > fluorescent lights from > a T12 to a T8 type of light and he could save > $1179.00 a year on his light > bill and have more light with the same ammt of > fixtures (13). I priced the > fixtures out and they are 24.00 more per light (twin > 8' tube) or 6.00 more > per light for a 4-tube- 4' bulb light. I need about > 90 of them for my shop > so the cost on the light fixtures would be a lot > more, but if this savings > on lighting bills is true maybe it would be worth > it?? > > (my friend owns a small muffler shop so the lights > are on at least 8 hours a > day). they claim the wattage on his fixtures are > 490, and the new fixtures > are 166. > > > > thanks for the help. > > > > Harlan > > > > > > ____________________________________________________________________________________ Everyone is raving about the all-new Yahoo! Mail (http://advision.webevents.yahoo.com/mailbeta/)
