Author Topic: Clamshells?  (Read 1644 times)
RadiantMV
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Clamshells? « on: May 03, 2022, 12:57:00 PM » Author: RadiantMV
Saw these mercury streetlights in a parking lot today. I’m pretty sure they’re clamshells, although I don’t know what kind.

Pics are google street view because we quickly drove by and i had no time to snap photos.
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Econolite03
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Re: Clamshells? « Reply #1 on: May 03, 2022, 01:07:30 PM » Author: Econolite03
Those are GE Form 402s, they’re kind of the predecessor to the M-1000. It’s basically a Form 400 with a extended neck as the sockets are set back to accommodate the bigger 700 - 1000W mercury lamps.
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joseph_125
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Re: Clamshells? « Reply #2 on: May 03, 2022, 02:15:31 PM » Author: joseph_125
Nice, yeah these look like the GE Form 402. If you have time, it might be worth it to go back with a camera for a close up picture as some of the Canadian GE Form # clamshells were quite different than their American counterparts. Just look at the difference between the Canadian GE Form 400 Powerpack and the American GE Form 400 Powerpack.
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wide-lite 1000
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Re: Clamshells? « Reply #3 on: May 04, 2022, 12:22:24 AM » Author: wide-lite 1000
Those Form 402's are super rare !! They'd be nice to save .
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RadiantMV
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Re: Clamshells? « Reply #4 on: May 06, 2022, 02:34:25 PM » Author: RadiantMV
Spotted some more clamshells today in the parking lot of an A&W restaurant. I think they’re Westinghouse HMA-60s but im not entirely sure.

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Silverliner
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Re: Clamshells? « Reply #5 on: May 06, 2022, 03:47:59 PM » Author: Silverliner
Yep these are HMA-60s. Rare fixtures.
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joseph_125
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Re: Clamshells? « Reply #6 on: May 06, 2022, 04:05:33 PM » Author: joseph_125
Yeah the HMA-60/OV-60. Rare to see. I wonder if they still work. They were designed for up to 1000w MV lamps.
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wide-lite 1000
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Re: Clamshells? « Reply #7 on: May 07, 2022, 04:43:41 PM » Author: wide-lite 1000
Any high wattage clamshells are uber rare today !!  I'd love to add one to the collection but I doubt it'll ever happen .
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joseph_125
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Re: Clamshells? « Reply #8 on: May 07, 2022, 05:00:50 PM » Author: joseph_125
Yeah, although I think any clamshell is getting rare. Maybe not the medium sized 400w ones yet but even the 100-250w sized small ones are rare to find for sale now.
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WorldwideHIDCollectorUSA
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Re: Clamshells? « Reply #9 on: May 10, 2022, 02:59:54 PM » Author: WorldwideHIDCollectorUSA
Any high wattage clamshells are uber rare today !!  I'd love to add one to the collection but I doubt it'll ever happen .

From what I am aware of, the Westy OV35 clamshells are among the most common high wattage clamshells.
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