It is an incandescent NEMA with a adminral shade......a lot of people have a misconception that NEMA means bucket fixture....but that is incorrect....an NEMA head is actually a fixture like here with the NEMA standards that has a standard fittings to allow any NEMA style globes such as bucket, gumball, admiral hat, quartermoon, radial waves to fit into the head. So it is NEMA fixture!
Yep the NEMA head is the part where the ballast is and the part that mounts on the pole arm. And yep, the main purpose of the NEMA head was to allow universal optic choices.
Well Michael.....NEMA heads don't always have ballasts....in fact the pic above doesn't have a ballast, its an incandescent......one of the oldest NEMA heads weren't made of metal, but porcline!!!
Yep some didn't have ballasts and some were remotely ballasted, but that's where it would go if there was an internal ballast. I like the admiral hats, but the radial waves are my favorite. It goes Radial wave, admiral hat, gumball/ teardrop, bucket optic. Wouldn't the porceline corode over time?
I know, not all has it.... BGE and PEPCO admiral hats does not have the additional accessory, however Delmarva Power Northeast of BGE and mostly in Eastern MD does have the admiral hats with the attached shields....I have one from Delmarva...it is a MV one! But ballast got taken out and its not a big loss because its 240 volt anyway....I put a different ballast in...
Login
And Tony, yeah those seem most common in older residental areas under PEPCO including in Washington DC. Most now have cobraheads though.....