400 W HID flood light hooked up to the 240v. tap. The photocell was 120v., they ran the two hots through the photocell. Have you ever seen this before? Thank you for your help.
It was a 120V. Photocell Blk, Wh, RedThis is/was a two pole photocell? Presumably containing a relay or SSR? I would question where the control power for the unit was derived from. If there is a neutral, it might be OK.
It was a 120V. Photocell Blk, Wh, Red
How? Can you post a diagram?zappy;19745help.20 said:they ran the two hots through the photocell.
I believe what he is doing is using one leg through the
Switch side of the photocell and the other leg parallels the photocell coil and the oposite side of the load. So basically black=line side red= switchleg to hid ballast white=constant hot to photcell coil and hid ballast o ly switching one phase 208-240-480 1phase
So that is a way but its dumb...Wont get the same life out of the photo cell. Its just a resistor...Why are we asking about trying to use a 120v resistor on a 240v circuit... Why is this a question. 15bucks 208-277 photocell.. It is only controlling a single 400w light? if that's the case probably not a big deal. ..
Basically.. But will it work.. Yes photo cell doesn't really care whats happening with that neutral.. There is no time clock involved? That happens a lot multiple circuits controlled by time clock with the control voltage switched by photocell.