Wiring the switch

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randyo

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If you have two devices and one 15a curciut, could you install a three way switch bewteen them??

By puting the hot lead on the traveler and the two switchlegs on ether device... the neutral on each device tied together.. the switch would turn one on and the other off...

the devices are a 1000 watt heater and a 1000 watt hot water on demand heater... So the room heater would be on most of the time... The heater has its own on/off switch..

YES, I could use an ON/Off/ON switch... but would the standard three way work...
 
Re: Wiring the switch

I have done this same procedure in photo developing dark rooms. The 3/way turns on the safety light and prevents the overhead incandescent or flourescent light from being turned on.

This setup becomes a load selector switch.
 
Re: Wiring the switch

If the switch was rated for the load, it would work.
I have seen this done in kitchens, with the switch in the down position, the dishwasher 1/2 of a duplex receptacle was hot. The other 1/2 fed the disposal. When the switch was up, the disposal ran, and the dw didn't.
 
Re: Wiring the switch

As long as the heater is 110 v, sure if not then both ungrounded conductors would have to be disconnected at the same time ,if this is the case then no it wont work ...................
 
Re: Wiring the switch

Rick 5280 as long as the d/w and disp. are cord connected or breaker locks are installed see422.30 b you can do this as long as ampacities aren`t overlooked see 422.34 a 3way has no off ?????
 
Re: Wiring the switch

Sparkmantoo,

its like a dpst right?
Click to expand...
No, like a spdt:

spdtknfe.gif
 
Re: Wiring the switch

randyo,

Your switching as described wouldn't work. The Line would have to go on the common.

Bill

[ April 09, 2003, 01:11 AM: Message edited by: bill addiss ]
 
Re: Wiring the switch

If the on/off swich is used as a means of turning it on and off it wont fly...... and to use a 3 way as a means of disconnect wont fly no marked on or off
 
Re: Wiring the switch

Terminology 101.!!!!!!

Is the common and the traveler the same ?????
In Bills post he uses the term "The Line"

Does that mean hot or neutral....


As far as the code goes... this is on a sailboat, so I dont think the NEC 2002 has standing..( of course you can barely stand up in this sailboat anyway)

So, do you EC types have a code book for boats.. AC and DC... do's and donts.????

All we get is 30A (110v) MAX in as many 15A breakers as we dare to install.
 
Re: Wiring the switch

Randy, "Common" in this case will be the hot wire which will connect to the identified (dark) screw.

"Line" is the hot wire

Travelers don't exist in this case, you will have two switch legs, which will connect to the other two screws and then to your loads.

There is a marine manual that does cover wiring methods on vessels but I can't think of the true name right at the moment.

Roger
 
Re: Wiring the switch

No. only allowed as the supply (HOT) to a switch Not on the "switched" feed to the light, and it has to be re identified.200.7(C)(2)

[ October 04, 2004, 07:45 PM: Message edited by: hurk27 ]
 
Re: Wiring the switch

While in over 22 years as an electrician i have yet to ever need to do what he is trying i can't see any danger or violation.And no it cant act as a disconnect (or could it if we took a sharpie and fixed the plate cover ?)
Did run into a problem over trying to use a decora switch turned horizontal as a disconnect for a garbage disposal.Simple fix just add lockout on breaker ( not that any service man would likely ever use them )
 
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