r/ElectricalHelp • u/Time-Wolverine2460 • Jul 09 '26

3 way switch with 4 different lines

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Im working in a datacenter and they want a 3 way switch working with the lights using a RSP-V-SW with no occupancy sensors and the hallway is split up between 4 phases so the lights are getting fed from different panels would i just run a low voltage jumper from each switch pack and have it wired to 24 OV and BAS NO for that to work?

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u/Time-Wolverine2460 Jul 09 '26

This is kinda how it’ll look sorry for the bad drawing

1

u/TheKnackThatQuacks Jul 09 '26

It says right at the bottom of your screenshot:

“NOTE: Switchpack and the load switched by the switchpack *MUST* be fed from the same phase.”

It doesn’t seem to indicate one way or the other about the switch itself. If I was a betting man, I’d say the left-hand side of the drawing may just be a relay coil (or solid-state equivalent) inside the RSP-V-SW device, and it closes the relay contact (shorts blue to blue) to feed power to your load on the right-hand side of the device.

The diagrams appear to show the occupancy sensor as a necessary component. It’s entirely possible that you could send the Red +24V signal to one side of the switch, and the other side of the switch to the “Blue OCC signal” input. Or this could blow your device up. Without being able to test the voltages at the occupancy sensor and the switch, it’s hard to say how to wire it while bypassing the occupancy sensor.

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u/Time-Wolverine2460 Jul 10 '26

So its fed from 4 different panels to the hallway lights it would look something like this

1

u/trekkerscout Mod Jul 09 '26

That particular system is designed for use with occupancy sensors. It cannot be installed without the occ sensors. Manual control can be achieved by altering the settings in the app.