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How many 400 watt metal halide lamps will operate off a 1000 watt ballast?
It will power two 400 watt lamps.
Can you use a 400W high pressure sodium bulb in a metal halide ballast?
No, the ballast has to be matched to the lamp. 250 watt ballast, 250 watt lamp. Also be sure to match the lamp type to the proper ballast even though the wattage is the same. HPS ballast to HPS lamp, Metal halide ballast to metal halide lamp and mercury vapour lamp to mercury vapour ballast.
How do you rewire a 400 watt metal halide shop light to run on 110?
400w is the power 110 is the voltage. Is your light using 110v already or 220v? Believe you are already running at 110 and u don't understand electrical terms. Perhaps you should call an electrician
How many lumens in a 40 watt hallogen?
That will vary on the manufacture and quality of the bulb. There is no set amount of lumens for a 40 watt halogen or any kind of bulb for that matter. To find out the lumen output you need to look at the box it came in as it should be stated. If you don't have the box it may be tricky to find out. You will have to see if you can find the manufacture somewhere on the bulb then google it and check the specs. It's probably safe to say its going to be around 500 lumens on average.
How many watts does a shower use?
Watt?
