because they don't.. the never once say it will drive VHO tubes to VHO levels, instead they rant and rave about the energy savings and the extended bulb life (upto 3 years :mrgreen: ) if you look for the thread I started on RC over a year ago (actualy there was 2 threads but the first one was deleted as the old RC staff didn't like anyone questioning one of there sponcers) you will see that even IceCap admidts they only power 4, 48" VHO tubes with 270 watts of power.

oh and don't forget there customer service is second to none, ... unless you happen to be asking how they can drive 440 watts of bulbs properly with only 270 watts of power :rolleyes: :mrgreen:

Steve

..Sorry dude..a lot of the vho vs. no seems to be true. I think its funny even Icecap admits this(...as STEVE says:),heres some ref. from Icecap:
http://www.icecapinc.com/rev1.htm
http://www.icecapinc.com/rev2.htm
Seems that 660's are better at making NO hotter (brighter but shorter lived) than their stated use as a VHO E-ballast. But @ $2.50 to $5.00 for No (GE @ C.T. or the 6500k daylight delux @ Home depot) I can blast a lot of tubes before it costs as much as VHO bulbs.

Does anyone know if the Work Horse ballast overdrives NO also....a difference in wiring??...

the workhorse can be wired to run 4 x NO tubes, 2 x HO tubes and 1 x VHO tubes (you can do 2 VHO if they are done in series and it doesent exceed the max lenght) all these use a different wiring configuration.

Steve

Thanks Steve.
Does Fultham have a website with wiring details and specs?

yup
http://www.fulham.com/wh7.html

Steve

lol...Steve beat me to it

so what is the total wattage a wh 7 is capable of running?

220watts

Steve

Fulham and VHO
 

According to Fulham tech support, the Workhorse 7 is not approved to drive multiple VHO bulbs in either series or parallel. They reported that the current rating of the ballast is such that it can not sustain VHO levels. The rating of 220W is based on peak power, not throughput. If you check their wiring diagrams, you will see that the give diagrams for driving 2 NO or PC tubes but not for 2 VHO tubes.