ECN Forum Forums Technical Discussion Electrical Theory and Applications Four wire feed through 3way switching +

.....A French Connection......

Al

Tom,

Is this anywhere close to the circuitry?



Scott SET

Scott,

Try this one...



The common of each threeway is connected together by a conductor that does nothing else. A light or load may be mounted at either or both ends.

Al


[This message has been edited by Webmaster (edited 11-02-2001).]

pauluk
Yes you can use your left over lengths of multi wire cable and four way (intermediate) switches are fine.

Re "Additional challenge." Are we allowed to assume 4-wire plus ground cable and intermediate (4-way) switches are available in the truck?

Well, if I'm allowed 4-wire plus gnd cable, and bearing in mind this is American wiring with nice size boxes and wirenuts to hand so that splices behind a switch are easy, one way would be thus:

Starting with the cct. I described above (also sketched by Al), install a new 4-way switch at the house side door and run a 4-wire (plus gnd) cable back to the existing 3-way switch. Disconnect the wires from the 3-way pos. 1 and pos. 2 and splice to the two wires going to the new switch. Connect the two wires returning from the new 4-way into the 3-way pos. 1 & 2 terminals.

Carry out exactly the same procedure for the additional switch in the barn, running a 4-wire cable from the existing 3-way to a new 4-way switch.

If the new switches were to be ganged up with other existing switches on the same circuit, I might do it differently, depending upon the wiring already present.

Hmmmm, something like this. . .


Thanks for the insite, Paul.

Al


[This message has been edited by Webmaster (edited 11-02-2001).]

Well Tom,
I'd say the crew here has done this service call justice!

cyber-high 5...

ElectricAL
Yes Al that works. What is more important is that it permits you to use the three wire plus ground cable that you are far more likely to have on the truck then four wire plus ground.
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Tom

Darn it..... The moment I saw Al's diagram I realized I could have changed the existing 3-ways for 4-ways and moved the 3-ways to the new positions to use 3-wire cable. Oh well, no A+ for that one!

pauluk
Live and learn old son. Your's was the method I had planned to use until I saw his diagram. I have rewired several outbuildings using the three way (UK two way) version. I have yet to have a call for the additional switches.
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Tom