Sylvania metalarc « on: March 09, 2025, 06:53:07 PM » Author: NeXe Lights
I want to know if this bulb will work in a cobrahead. https://www.ebay.com/itm/306129861667?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=c6-3TfgIRfS&sssrc=4429486&ssuid=wngkp0-gtac&var=&widget_ver=artemis&media=COPY It says on the etch "BU-HOR" but I want to make sure it will run in a horizontal cobrahead.
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	Re: Sylvania metalarc « Reply #2 on: March 09, 2025, 08:08:05 PM » Author: NeXe Lights
OK cool
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LEDs made everything better and worse at the same time.

	Re: Sylvania metalarc « Reply #3 on: March 10, 2025, 05:08:24 AM » Author: dor123
I don't know why the lamp rated BU-HOR and not BU. There is a heat reflective coating only at the lower end of the arctube. MH lamps with such arctube, are usually suitable for base-up burning only.
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I lives in Israel, which is a 220-240V, 50hz country.

	Re: Sylvania metalarc « Reply #4 on: March 12, 2025, 12:00:37 AM » Author: wide-lite 1000
Not always . I've seen several Probe start MH lamps listed as base-up to Horizontal .  https://www.scribd.com/document/81323685/GE-1980-Lamp-Catalog The 1,500w lamps on page 72 .  https://www.scribd.com/document/79729768/Sylvania-1980-Large-Lamp-Catalog  The 250w and higher Metalarc lamps  https://www.scribd.com/document/113723979/Westinghouse-Jan-1980-Large-Lamp-Catalog  The 300w and higher Metal Halide lamps .
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