How do you wire a light that requires 240 Volts to 3-way switches?

Answer 1

== == === === == == If it were me, I'd wire a 110V relay to a conventional 3 way switch circuit and have the relay run the 220V light. Otherwise you get into a lot of expense and trouble dealing with a lot of specialty switches. <><><>

(LIFE SAFETY WARNING! [disclaimer]

Electricity is dangerous!

You can be injured or killed!

Improper installations can cause fire, injury and death!

Should you be doing this yourself?)

You could always use a double-pole double-throw switch, which is nothing more than a 2 pole three-way switch [but you will need FOUR travelers instead of two!]

A relay controlling the 220 volt line sounds like a good idea.

If you are going to relays, though, why not a 12 or 24 volt control circuit. Low voltage switches and wiring are much more flexible, from a code and installation standpoint.

Thermostat cable is much cheaper than non-metallic cable ...

And, if you use a latching relay, you can use momentary contact type switches and have the light controlled from as many locations as you want [the switches get connected in parallel this way, not in series!]

<><><> I'm surprised, they must have some interesting wiring methods in Philly, and not bother with the NEC, or UL. No, you can not use a DPDT switch as a two pole, three way switch. A DPDT switch has both the up, and down position labeled as ON, which in itself would violate code, but additionally, because it was never intended to be used in that manner. If it hasn't been tested, and approved by the manufacturer for that purpose, and listed with UL as such, it's a code violation plain and simple to use it as such. You are right in that using a relay, with a low voltage control circuit is probably the best way to go.

<><><> What kind of light fixture requires 240 volts????? The only thing I can think of is a discharge lamp, and those should not be turned on and off frequently. - - - - - - - - - - - - - - -

Perhaps one that is located in the UK? (See the answer given below!) The correct answer to your question will depend on the exact locations of the light and the switches to control it.

<><><>

By asking this question you are probably not quite ready to take on this particular task.

The correct answer will depend entirely on the location in Europe.

How to do this job depends entirely on the Wiring Regulations for the locality (Town/County/Country) and what they say about the locations where wall socket outlets and fixed electrical appliances are to be installed.

<><><> As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed. Before you do any work yourself,

on electrical circuits, equipment or appliances,

always use a test meter to ensure the circuit is, in fact, de-energized IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB

SAFELY AND COMPETENTLY

REFER THIS WORK TO QUALIFIED PROFESSIONALS.

Answer 2

If the 240V supply comes in similar to 110V (via one live and one neutral wire) then you should be able to use the same concept as 110v three way switching. There will be two wires (transport) between the two switches in addition to the live and neutral to allow the system to work.