14/2 For Travelers?

[LarryFine]

. . . or 2 sets of 14/2 causing the EMF interference . . .

Not if you run the two cables together.

 

[quogueelectric]

different approach

different approach

when electricity flows it sets up an electro magnetic field. When the conductor that supplys is next to the conductor that returns it sets up 2 equal and opposite magnetic fields which tend to cancel each other. This is why the code requires that all conductor including the ground be run together except in the case of isophase supply on a service which must be in a non magnetic medium. This is why if you nipple 2 pipes into a lighting contactor panel you cant run all of the neutrals in one pipe and all of the hots in annother. You are creating a single turn xformer which will produce heat as a byproduct of the magnetic field.

 

[iwire]

This is why the code requires that all conductor including the ground be run together except in the case of isophase supply on a service which must be in a non magnetic medium.

The NEC allows running the branch circuit conductors separately if you use non-ferris wiring methods. (Plastic boxes and NM)

Check 300.3(B) (2) or (3).

 

[LarryFine]

. . . non-ferris . . .

Ferrous, but who's counting?

 

[iwire]

Ferrous, but who's counting?

LOL

Hey I spent five years working with Ferris wheels....cut me some slack. :grin:

 

[tallgirl]

Thanks Larry for making me feel young. I'm not going to respond to this thread because enough is said. But I too remember when I started we used brace and bit and also twist drills for block. I started in 1972 when I got out of the Marines. Semper Fi. Buddy

Brace and bit in 1972? They had electric drills back then. Was that some kind of hazing ritual?!?

 

[LarryFine]

Brace and bit in 1972? They had electric drills back then. Was that some kind of hazing ritual?!?

It was for me. As a helper, I got to hang up a triplex over a lumber yard. The cable sagged too much, and they sunk a pole in the middle of the yard. Drill the hole for the eyebolt before erecting the pole? Naaaah!

They put me, a brace and bit, an eyebolt with hardware, a come-along, and a wood extension ladder atop a stack of lumber, placed that stack atop another stack, pulled up to the pole and extended the forklift to max height.

Then, I stood up and extended the ladder, climbed to the top, and wrapped a piece of NM around me and the pole so I could lean back. Then I bored the hole, attached the eyebolt, pulled the triplex up, and attached it to the eyebolt.

Damn, I was brave back then!