that's not a photocell receptacle. It's just a snap-in black cover to fill in the hole. Both lights have that. These must have been one of the last A2s made since they're from 1997 (03-1997 was the date).
I'd like to get a photocell receptacle for the M-400A2 that I'm keeping though. I'd install it after the restoration.
I might paint the ballast core too (not the coils though) as the replacement 320W PSMH Venture ballasts are rusting and so are the capacitors. originally these were both 400W HPS wired at 277V single tap so in a way i'm glad the ballasts were replaced (as these are multitap so i can run them) but i wish the electrician had kept the powr/module plugs. Right now every time i remove the door i have to undo four wirenuts then remember how to reconnect them when i put the door back on lol.
Starting in (i think) the mid 80s, the GEs all had tool free PC sockekets with a heay spring inside. there are four little bubbles on to the top and the PC receptacle sink into those bumps. My M-400's PC socket (the same one as my R1 and M-250A's) doesn't fit. its the style with the two screws and the big metal washer liek you said.
Hmm, I guess Darren might have one but you might want to post a wanted request in the forum since the picture comments get pushed back really quickly .
he might... if he does he'll probably want to add it to the A2 going to him. This will be his first PSMH fixture. It's my first PSMH cobrahead but my second PSMH light, as my deck light is 70W PSMH. i didn't realize the larger wattage PSMH lamps didn't have oval arc tubes. these philips lamps have arc tubes like standard Mh lamp.
I'd like to get a photocell receptacle for the M-400A2 that I'm keeping though. I'd install it after the restoration.
I might paint the ballast core too (not the coils though) as the replacement 320W PSMH Venture ballasts are rusting and so are the capacitors. originally these were both 400W HPS wired at 277V single tap so in a way i'm glad the ballasts were replaced (as these are multitap so i can run them) but i wish the electrician had kept the powr/module plugs. Right now every time i remove the door i have to undo four wirenuts then remember how to reconnect them when i put the door back on lol.