ECN Forum Forums General Topics of the Trade General Discussion Area 277 volt medium base fixture

The step-down xfrmr won't go by 210-6(c)2 because it is not anintegral component of the fixture.
Why not retrofit it to CFL like the others?

& be sure it's not an HPS, metal halide, or old MV fixture?? Some of the lamps look just like 120V-A19.