Multiple Occupancy sensors. {More than 3}

[Jcoyne97222]

Hi all,

I just found this forum last night and figured I would post my issue since I can't find much out there with a similar situation.

My job is to light a big garage area in basically a basement. The caveat is that the house is in a flood plane. The county flood plane at this house is 5' and all electrical has to be 3' above the flood plane. This would put all electrical including light switches at 8' or above. The house is basically raised 10' off the ground and creates a large space under the house, like a basement.

My idea would be to run a 4-way circuit around the garage locating occupancy switches at all of the key locations. Then feed the output to the lighting circuit. I need to have a way to switch the lighting circuit as well as keep the lights on while somebody might be working in a specific area.

I have been looking for info on using more than 1 multi-location occupancy sensor. (Lutron MS-OPS5MH) I can't find anything about wiring a new circuits, but I do find info about replacing a 4-way switch with an occupancy sensor. Before I go out and buy the supplies and run a ---- load of wire I am looking for another set of eyes that this would work or is there a simple/cheaper way to achieve the same results?

I have attached the diagram from Lutron that I found regarding swapping a 4-way switch with a multi location occupancy switch.

Any feedback would be appreciated.

John

 

[Rockingit]

So just so I’ve got this clear - you need multiple occupancy sensors to trigger a light/ing circuit which can be manually overridden by a switch as well?

If so, sounds to me like you’re overthinking this and just need a contactor driven lighting circuit.

 

[Jcoyne97222]

It would be nice if it could be overridden by a switch but not needed if I locate the occupancy sensors in the right spots.

John

 

[Jcoyne97222]

So just so I’ve got this clear - you need multiple occupancy sensors to trigger a light/ing circuit which can be manually overridden by a switch as well?

If so, sounds to me like you’re overthinking this and just need a contactor driven lighting circuit.

How are you thinking the coil on the contactor would be energized?

 

[Rockingit]

How are you thinking the coil on the contactor would be energized?

How are you thinking the coil on the contactor would be energized?

Well conventional wisdom says that you just parallel ('piggy back') as many switch sources as you need, all fed to the contactor coil. If for some reason you needed electrical separation between some of them then you can even have multiple sets where you end up with contactors driving the ultimate coil of the ultimate contactor. That's an old school method, of course, there's now various ways of doing that same thing electronically/network/'smart' whatever but ultimately the methodology is the same.