Subj : Light Switch Replacement
To   : Mike Powell
From : Barry Martin
Date : Mon Dec 16 2024 07:34:00


Hi Mike!

 > Here had an interesting event: I was changing a light switch.  Located
 > on the wall between the Kitchen and the Dining/Family Room.  Switch box
 MP> So far, I have not had to deal with any switches or outlets that
 MP> had had a common to another circuit.
 
I think they're semi-common but not sure.  Maybe 'discontinued' by the 
NEC because one hot could be active while the other is shut off, so 
posing a hazard if both hots in the same electrical box -- thinking along
the lines of a split duplex outlet where one hot to the top outlet and
the other hot to the bottom.  (Why that configuration -- who knows!)

The incoming drop to the house does use that circuit: two hots, opposite
phases, and a common neutral.


 MP> I did have a small surprise
 MP> with the breaker box, though.  Apparently, there is not a "main
 MP> switch" in the box... it takes two switches to kill the power and
 MP> IIRC, there is one circuit that stays on (the one that lights the
 MP> room the box is in).

That makes sense but doesn't seem right. Here there is a breaker just 
for the outlet next to the service panel but it looses power when the 
Main Breaker at the top of the Service Panel gets turned off.  ...I 
suppose the Main Breaker/Switch is in a box with a little breaker box 
just for power to the room.  


 MP> I had an electrician in to work on something once.  I mentioned
 MP> that to him and he said that brand (or type) of box usually does
 MP> not have one main switch.  I figured it was a goof on whoever
 MP> installed the box but I guess not.  ;)

Guess not!  One one hand it makes sense but on another not.  Apparently 
does make sense for some!

                     ¯                                 ®
                      ¯  BarryMartin3@MyMetronet.NET  ®
                     ¯                                 ®


.... I think, therefore I dam -- the guy who designed the Hoover Dam
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