Single pole vs 3-way for timer switch

Old 07-24-03, 03:38 PM
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Single pole vs 3-way for timer switch

This may be a rather naive question: I want to install a timer to control two outside lights that are controlled by a 3-way switch. One of the 3-way switches (in a gang box of 4 switches) has been disabled (the cleaning crew kept flipping it!). The other switch that contols the lights is a single switch, which is where I want o put the programmable digital timer. Can I use a timer switch that is labeled "single pole," since the other wall switch is disabled? Or must I buy a timer switch that is labeled for use with a 3-way switch? TIA.
Old 07-24-03, 06:09 PM
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Location: Williamsport and Blue Bell, Pennsylvania
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A timer switch should be do-able.
We need to know the wiring layout, before giving specific instructions. What type of wiring is this: romex, BX, MC, or conduit? I have the feeling this is commercial?

How many wires are in the box of the individual switch? There will need to be three, minimum. The timer switch requires a hot and nuetral, the third will be the switched conductor for the lights. Where is the switches and lights fed from, at the 4-gang box, the individual, or at the light? (Where power is obtained from)

If wiring is conduit, or MC, wires may be any color of the rainbow, which introduces some choices and changes.


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