In respect to this, where do you put a photocell?
For most general applications the photocell should be mounted between 6-8 feet of the window area, central to the area illuminated by the electrical lighting that will be controlled. In all cases the photocell must be mounted so that it looks at reflected light only and not at any direct light.
does a photocell need a neutral? The photocell needs the neutral to operate it’s internal switching.
Simply so, can one photocell control multiple lights?
A single photo control device can turn on and off multiple fixtures on a circuit. This means you can have one photocell on the north or south facing wall of a building that controls all wall packs, parking lot lights, or other outdoor fixtures for the space.
How do you wire a photocell to a contactor?
Break your circuit, L N E through your contactor. Link a permanent live and a neutral from your supply to your coil (Al + A2) then use your switch feed to your photocell from A1, and switch the wire to the switched phase of your contactor load. This should now open when light, close when dark.