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I actually have a 400w hps ballast and I can also use my 400w metal halide bulb in it with no problem. So what your saying is they do, but they dont? the answer is, they dont. You can get universal bulbs hps to plug into a mh ballast they have a miniturized igniter inside the bulb. As I understand it, a 400W metal halide bulb can be used with a 400W hps ballast, but not the converse. A MH bulb has the igniter in the bulb, and the HPS has it in the ballast--which pretty much goes along with your comment above. Apparently the double presence of the igniter in the HPS setup is OK.you can run metal halide in same wattage's but not hps in metal halide systems.you can run such as (same wattage's)250 watt metal halide-400 watt halide ect in hps systems but not hps bulbs in halide systems. they make conversion bulbs to run halide in hps as well and vice versa.
yes
Not recommended. It would work but shorten lamp life and may cause risk of fire. However, if you just wanted to check a lamp was capable of striking it would be ok for a few minutes. I've done the opposite in the past and used a 150w lamp with a 100w ballast. Works, but not good for any of the components, including lamp.
The electronic BALLAST is a circuit that limits the current through the fluorescent bulb to the design value. It also provides a pulse of high voltage to start the bulb conducting when it is switched on.
reactor ballast
I actually have a 400w hps ballast and I can also use my 400w metal halide bulb in it with no problem. So what your saying is they do, but they dont? the answer is, they dont. You can get universal bulbs hps to plug into a mh ballast they have a miniturized igniter inside the bulb. As I understand it, a 400W metal halide bulb can be used with a 400W hps ballast, but not the converse. A MH bulb has the igniter in the bulb, and the HPS has it in the ballast--which pretty much goes along with your comment above. Apparently the double presence of the igniter in the HPS setup is OK.you can run metal halide in same wattage's but not hps in metal halide systems.you can run such as (same wattage's)250 watt metal halide-400 watt halide ect in hps systems but not hps bulbs in halide systems. they make conversion bulbs to run halide in hps as well and vice versa.
yes
yes
Not recommended. It would work but shorten lamp life and may cause risk of fire. However, if you just wanted to check a lamp was capable of striking it would be ok for a few minutes. I've done the opposite in the past and used a 150w lamp with a 100w ballast. Works, but not good for any of the components, including lamp.
The electronic BALLAST is a circuit that limits the current through the fluorescent bulb to the design value. It also provides a pulse of high voltage to start the bulb conducting when it is switched on.
It seems most likely to me that the ballast of the dim one is bad--metal halide bulbs aren't simply connected to the 120 V line voltage but need a "ballast" for several functions, including producing a high enough voltage to start them and regulating the current through them. If one was bad (or was designed for a different bulb), that would explain everything. One other possibility is that there's a wiring problem and either the dim one isn't getting a full 120 V, or the others are getting more than 120 V. If this is a three-phase commercial installations there are various ways to mis-wire things and get odd voltages; in a residential system, you'd pretty much either have 120 or 240, and the 240 would probably quickly overheat a ballast made for 120, so that doesn't sound likely.
AnswerThe ballast may need replacement as this acts as a fuse in the system. You can momentarily jump the ballast to see if it will start. A ballast that keeps going out is sometimes caused by bad spark plug wires. Or secondary voltage jumping from coil tower to primary [ballast side] terminal.
check pulse no pulse start cpr
reactor ballast
Yes, a ballast is required for HPS (high-pressure sodium) lights. The ballast helps regulate the electrical current and provides the initial high voltage needed to start the lamp. Without a ballast, the HPS light would not function properly.
check pulse no pulse start cpr
She has a pulse and does not want to kill you, that's a start.