On 6 Dec, 16:27, "rgrgrgr" wrote:
I need to replace a Metal Halide lamp in a light fitting. The bulb is
marked:
SYLVANIA METALARC HSI-TD 150W/NDL UV-STOP. It's about 130mm long.

None of the Internet retailers I already have an account with stock this
exact lamp, so I'm trying to figure out what other lamps might be
compatible. Does anyone know if one of these would work?

http://uk.farnell.com/osram/h150nd-h...eutral-150w/dp...
(seems compatible but this lamp specifies a 90V supply - does the light
fitting contain a transformer?)

http://www.screwfix.com/prods/25381/...Lamps/Powersta...
(seems compatible, but claims to be 180mm long - a typo?)

crossposted to sci.engr.lighting

Sylvania is mainly U.S. brand of Osram, 90V will be taken care of by
the ballast , not a transformer possibly still big lump of iron in
fitting.

Looks like a fairly standard 150W single ended tubular lamp, depends
if you need a very specific colour.

Adam