sd4524
Senior Member
- Location
- Southern California
Learned something new yesterday the hard way. Now i want to know why. I was troubleshooting 175w metal halide wallpack. I tried 2 brand new lamps and neither worked. The new lamps were 150w metal halide. Not even a flicker, nothing from the 150w lamps.
So obviously to me, the ballast needs to be replaced. I replace the ballast (24 ft extension ladder) and try the 2 150w lamps. Nothing again! I talk with another electrician and he tells me that the lamp and ballast need to be identical to work. I run to supply house and get a 175w lamp but in the back of my mind I'm thinking he's wrong.
I installed the 175w and the light kicks right on! Nothing at all from a 150W? Not even a flickr? A quick burnout?
And before you ask, I'm working as an employee and did tell my boss what happened. It's up to him how he bills it. He said the same thing happened to him once.
So obviously to me, the ballast needs to be replaced. I replace the ballast (24 ft extension ladder) and try the 2 150w lamps. Nothing again! I talk with another electrician and he tells me that the lamp and ballast need to be identical to work. I run to supply house and get a 175w lamp but in the back of my mind I'm thinking he's wrong.
I installed the 175w and the light kicks right on! Nothing at all from a 150W? Not even a flickr? A quick burnout?
And before you ask, I'm working as an employee and did tell my boss what happened. It's up to him how he bills it. He said the same thing happened to him once.