ECN Forum Forums General Topics of the Trade General Discussion Area switch?

Curt:
If you tie the hot to the common of a 3-way how do you shut both when not in use ?
-Mark

It would have to be ON-OFF-ON....

Mark

The instant hot is not normally ever disconnected and is designed to be connected to a constant hot receptacle. The only reason to disconnect it would be for servicing and this would be done by unplugging it.

Curt

My concerns were directed towards the possible confusion that could become a problem for someone someday.

This method is not the way that the rest of the world thinks, and an electrical designer would not include this method in their design.

If so, I would like to hear from them and even if a few do, its still very unusual and although it may work, I still feel it is not a good idea. I did not quote the rules to call attention to any specific violation, only to give my personal opinion.

Joe, I agree.

When we stretch things too far in the terms that there is no violation according to any authority, we are treading on very thin ice.

With enough thought we can find a loop hole in anything. IMHO thats the very reason our courts are so backed up.

I think as profesionals we should hold our ground when we are turned down for an inspection that we feel is correct, but is turned down.


On the other hand I don't think we should be trying to defeat the very purpose of the code by skating around it.

I'm probalbly in trouble again.

Roger

[This message has been edited by Roger (edited 07-12-2002).]

thanks for that opinion joe, that's kind of what i thought you were getting at. and that's what i was looking for...... some diffent opinions.

mark, like curt said, the hot water heater is intended to be on all the time anyway.

so maybe you're wondering why didn't i want to simply put a hot water heater receptacle in the j-box so it could be on all the time [with the cord and plug, additional disconnecting means] without going to the trouble of using the switch leg? because i didn't want the potential of overloading the circuit with both the disposer and the water heater being used at the same time..... the switch solves that problem. i thought i invented something, then curt burst my bubble

Cindy:
The Hot water may want to be on all the time but there has to be someway to shut it off, disconnect it for servicing/safty ? Instead of having to run to the basement to find the breaker and shut it off.
The way I see it is you have two separate circuits, one is a resistive load and one is a motor load. JMO but I would treat each in turn.

-Mark-

Are they small enough to meet the provisions of 422 together?
Can a new circuit be run if not?

mark, i don't know how to do the quote thing you guys do all the time but you said that "The Hot water may want to be on all the time but there has to be someway to shut it off, disconnect it for servicing/safty? Instead of having to run to the basement to find the breaker and shut it off."

what's wrong with the cord and plug disconnect? it's accepted practice for appliances in 422.33(A) and even works for the range where you have to reach through the bottom range drawer 422.33(B)

and the conductors don't kow the difference between the resistive load vs the motor load as long as the circuit is rated for them and the switching device is rated for either

am i missing something, or are you guys just messing with my head?

use 422 and 210 for rating limitations and even in 430.24 for motors and other loads exception 3 says if the circuitry is interlocked so as to prevent operation of selected motors or other loads at the same time------ that tells me this is not a new idea for a device to provide interlocking

several sections use interlocking to allow separate loads on one circuit 220.32(C)(3), 440.34, 440.62(C)