Re: Can a 400W PSMH Luminaire run a 400W HPS Lamp? « Reply #30 on: March 16, 2021, 11:34:49 PM » Author: WorldwideHIDCollectorUSA
Quote from: thelightingman on March 16, 2021, 11:28:47 PM Would it be ok to run a 250 watt PSMH bulb on a 250 watt HPS ballast? You will actually overdrive a 250w pulse start metal halide lamp on a 250w high pressure sodium ballast unless the pulse start metal halide lamp is a retrofit lamp for high pressure sodium ballasts because most North American 250w pulse start metal halide lamps run at 135v 2.13a while 250w high pressure sodium lamps run at 100v 3.0a. Interestingly, if you use a European superimposed ignitor, you can actually run a 250w pulse start metal halide lamp on a 250w mercury vapor ballast without much problems.
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Desire to collect various light bulbs (especially HID), control gear, and fixtures from around the world.

DISCLAIMER: THE EXPERIMENTS THAT I CONDUCT INVOLVING UNUSUAL LAMP/BALLAST COMBINATIONS SHOULD NOT BE ATTEMPTED UNLESS YOU HAVE THE PROPER KNOWLEDGE. I AM NOT RESPONSIBLE FOR ANY INJURIES.

	Re: Can a 400W PSMH Luminaire run a 400W HPS Lamp? « Reply #31 on: March 17, 2021, 12:12:18 AM » Author: M250R201SA
I know that the opposite is done quite frequently
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"I know a thing or two about a thing or two...  I sure do."

	Re: Can a 400W PSMH Luminaire run a 400W HPS Lamp? « Reply #33 on: March 19, 2021, 09:37:41 PM » Author: Joe Maurath, Jr.
When potentially very high (deadly!) voltages were prevalent with series street lighting, maintaining and working with these lights was part of line work.
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"A secret to happiness is letting every situation be what it is, instead of what you think it should be, and then making the best of it."

Please refer to www.insulators.info where I periodically post many images of lights and insulators in the group's Picture Poster Gallery. Thank you.

	Re: Can a 400W PSMH Luminaire run a 400W HPS Lamp? « Reply #34 on: March 19, 2021, 10:00:34 PM » Author: thelightingman
Quote from: WorldwideHIDCollectorUSA on March 16, 2021, 11:34:49 PM You will actually overdrive a 250w pulse start metal halide lamp on a 250w high pressure sodium ballast unless the pulse start metal halide lamp is a retrofit lamp for high pressure sodium ballasts because most North American 250w pulse start metal halide lamps run at 135v 2.13a while 250w high pressure sodium lamps run at 100v 3.0a. Interestingly, if you use a European superimposed ignitor, you can actually run a 250w pulse start metal halide lamp on a 250w mercury vapor ballast without much problems. Thanks. I will be looking for a proper HPS lamp then.
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I think HPS, MV, and MH rule! Ban LED instead!

	Re: Can a 400W PSMH Luminaire run a 400W HPS Lamp? « Reply #35 on: March 20, 2021, 01:37:47 AM » Author: M250R201SA
Ebay... look for NOS lamps from the ‘90s if you want proper usage.
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"I know a thing or two about a thing or two...  I sure do."