I am trying to study for my NEC code test, but I am really confused by this book. I am on box fill, and it is talking about device yoke. Can someone explain to me what the yoke is and also if I am interpretting this right, that a single device yoke and a multi device yoke is both counted as 2 for box fill.
box fill question
- Thread starter jkpyke
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jumper
Senior Member
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- 3 Hr 2 Min from Winged Horses
The yoke is the steel strap the receptacles are mounted to. A singe rec or switch is the same as a double or duplex. There is another requirement for large rec. Gimme a sec I have a pic somewhere.
jumper
Senior Member
- Location
- 3 Hr 2 Min from Winged Horses
Here is a article, with pics, I book marked:
http://ecmweb.com/nec/code-basics/electric_box_fill_calculations/
http://ecmweb.com/nec/code-basics/electric_box_fill_calculations/
jetlag
Senior Member
- Location
- Eatonton, Georgia
All those that did not agree that is is ok to loop the hot wires between switches in a multi gang switch box that I posted a while back ,go to page 10 "extra wire at boxes" and then open the link by jumper to see loop wires around a device screw.. Some replies said device screws are not designed for feed through.
jumper
Senior Member
- Location
- 3 Hr 2 Min from Winged Horses
No problem. You are welcome. You taking any classes?
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
I guess the yoke was on you. :grin:
- Location
- Windsor, CO NEC: 2023
- Occupation
- Hospital Master Electrician
Remember, that's 2 conductors, not 2 cubic inches.
chris kennedy
Senior Member
- Location
- Miami Fla.
- Occupation
- 60 yr old tool twisting electrician
Thats why we are all here.
jumper
Senior Member
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- 3 Hr 2 Min from Winged Horses
Jim W in Tampa
Senior Member
- Location
- Tampa Florida
And to confuse you even more this receptacle grows in size based on the size of conductors.
Just some more crazy thinking that they came up with. It might be a 50 cent single pole switch or a fat GFCI receptacle. Wonder what them boys are smoking sometimes.
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
I disagree with the pics; I've gotten larger receptacles in deep 1g boxes and plaster rings.
jmellc
Senior Member
- Location
- Durham, NC
- Occupation
- Facility Maintenance Tech. Licensed Electrician
I've gotten them in there, but had trouble for it later. Had to learn the hard way, or the people teaching me had to.
- Location
- New Jersey
- Occupation
- Journeyman Electrician (retired)
Is this the graphic you have a problem with? That hole in the center is for a single gang box. Isn't that still one yoke?
- Location
- Windsor, CO NEC: 2023
- Occupation
- Hospital Master Electrician
Yes, but...
(4) Device or Equipment Fill. For each yoke or strap con-taining one or more devices or equipment, a double volume allowance in accordance with Table 314.16(B) shall be made for each yoke or strap based on the largest conductor connected to a device(s) or equipment supported by that yoke or strap. A device or utilization equipment wider than a single 50 mm (2 in.) device box as described in Table 314.16(A) shall have double volume allowances provided for each gang required for mounting.
(4) Device or Equipment Fill. For each yoke or strap con-taining one or more devices or equipment, a double volume allowance in accordance with Table 314.16(B) shall be made for each yoke or strap based on the largest conductor connected to a device(s) or equipment supported by that yoke or strap. A device or utilization equipment wider than a single 50 mm (2 in.) device box as described in Table 314.16(A) shall have double volume allowances provided for each gang required for mounting.
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