I dont have to google anything your the one saying a 150w ballast runs at 400w...jesus if you know the amperage and the voltage then finding the watts is simple math maybe its YOU thats needs to think before they type.
I answered the question a long time ago the answer to the ops question is about 1.3 amps.
you guys are still wrong! heres the story i bought a sunlight supply 150w once and noticed a huge spike in my energy bill so i did some research did a little google ya know.
REVIEW: Sun System 150W HPS System
This is my first “review” so please be kind. My background is in mechanical engineering, not in literature, so I am more number oriented.
I ran some tests on the Sunlight Supply 150W HPS Lighting System. This complete lighting system is compact; yet very potent (putting out a rated 16,000 lumens with the included 150W HPS bulb).
For being a magnetic ballasted system it is not too loud. While running in my office it does have a slightly audible hum (which is typical with magnetic ballasts). When I leave the room the ballast is not audible in the hallway outside my office.
Of course being technically minded I needed to run energy consumption tests on the light; I must say I was quiet surprised.
Outlet Voltage: 122.5V
Instant On Amperage: 4.31A
After Running 60min: 3.33A
This results in an initial start-up watt consumption of 528W. After letting the light warm up and stabilize for 60 minutes the light was consuming a consistent 408W. This means the light is consuming 408W to produce 150W of lighting (a power factor of 37%).
The light was positioned 18” above a container of Hydroton and left to sit for 60 minutes. The temperature at the surface of the container was 86F, while the office temperature was a consistent 76F. This little light is perfect for a small garden, smaller than 2’x2’.
We sell the Sun System 150W HPS System through our website,
CLICK HERE TO BUY.
heres one of those google searches now.... just like every other one you guys can all read about