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All high-intensity discharge (HID) bulbs, and all fluorescent bulbs, require a ballast, which is a device that limits current. It can raise the voltage and/or heat the bulb cathodes.

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13y ago

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Do you need a ballast for a 250watt sodium bulb?

Yes, a ballast is required for a 250-watt sodium bulb. The ballast is essential for regulating the electrical current and ensuring the bulb operates properly. Be sure to select a ballast designed specifically for the type of sodium bulb you have.


Can you use a 70 watt high pressure sodium bulb in a 100 watt ballast?

No. The bulb has to match the ballast wattage exactly. And you can't interchange different lamps (like metal halide) either. The ballast is specific to that wattage and lamp type. The bulb will either burn out quickly or just not work properly at all


Can you run 400watt mh in a 600 watt hps?

Yes, you can run a 400-watt metal halide (MH) bulb in a 600-watt high-pressure sodium (HPS) fixture, but you need to ensure that the ballast is compatible with the MH bulb. Using a 400-watt MH bulb in a 600-watt ballast may lead to reduced efficiency, as the ballast will deliver more power than the bulb requires. It's essential to check the ballast type and ensure that it can operate both bulb types safely. If not compatible, it's best to use the appropriate ballast for the MH bulb to avoid damaging the bulb or the fixture.


How can you find out what type of ballast you have if it has no marks on it?

ballast are either electronic or iron core induction type so at the end of the day it does not matter what type it is so long as it can handle the wattage of the tube you are trying to drive any thing will work so long as you have every thing in place that the new ballast needs,electronic types need nothing to work ballast types need a starter of some kind


How do you connect 250 watt bulb into a ballast?

If the 250 watt bulb is a HID or similar type the ballast comes complete with the fixture. The bulb socket is also part of the fixture and comes pre-wired to the socket. To connect the bulb to the fixture all that has to be done is just screw it into the fixture's socket.


How many volts should I be reading at a fluorescent bulb?

The voltage present on the secondary side of the ballast (transformer) varies as to the type of fluorescent tube or bulb that is in the fixture. The voltage will always be higher that the applied line voltage that supplies the ballast.If the fluorescent bulb screws into a lamp type of fixture, then there is no way to measure the voltage at the bulb as the tube and ballast are a combined sealed unit.


If a fluorescent light blinks is the light bulb bad or the ballast?

I have seen it both ways. Usually it is the bulb which is a few bucks. The ballast will cost more and could cost $15-$30 bucks depending on type. If you have another bulb that is working, swap it with the flicker light and see if the problem goes away. If the swapped bulb works, I always put the bad bulb in the fixture where the good bulb came from. If the bad bulb now works, you could have a seating problem with the bulb. If it flickers, replace it.


Can you replace t8 bulb in fixture now using t12 bulb?

Yes a T12 lamp socket will take a T8 tube. The T8 tube will not operate. The T8 ballast is an electronic ballast where as the T12 ballast is a magnetic type. If you are changing over fluorescent fixtures to the smaller T8 lamps then the ballast has to be changed and the end sockets have to be rewired. The schematic on how to do the rewire is on the electronic ballast's label.


Can you replace a mercury vapor bulb with a metal halide?

Yes, you can replace a mercury vapor bulb with a metal halide bulb as they are both types of HID (high-intensity discharge) lighting. However, you may need to also replace the ballast to match the new bulb type, as metal halide bulbs usually require a different ballast. Additionally, check the wattage and size of the new metal halide bulb to ensure it is compatible with the fixture.


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.


Why does your fluresant light not work after you installed a ballast?

Do you have the right ballast for the type of lamps you are using? Check on the nameplate of the ballast to see it matches with the type of tubes you are using. Are the tubes snug in the lamp holders? Is the fluorescent fixture grounded using the fixture ground screw? Do you have voltage to the ballast? On most lamp start ups you can see the lamp filament glow on each end of the tube. If you don't see the filament glow on any of the tube ends, check the wires going to that lamp holder.


What is a self ballasted lamp?

A self-ballasted lamp is a type of light bulb that has an integrated ballast. This means that it doesn't require a separate ballast to operate, making installation simpler and more convenient. Self-ballasted lamps are commonly used in household lighting fixtures.