ANSI Ballast Codes
| Power output | ANSI codes |
|---|---|
| 20W | M175 |
| 39W | M130 |
| 50W | M110 |
| 70W | M98, M139, M143 |
| 100W | M90, M140 |
| 150W | M102, M142 |
| 175W | M57, M137 |
| 200W | M136 |
| 250W | M58, M138, M153 |
| 320W | M132, M154 |
| 350W | M131, M171 |
| 400W | M59, M135, M155 |
| 450W | M144 |
| 750W | M149 |
| 1000W | M47, M141 |
Read more about this topic: Metal-halide Lamp
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