Electrical Panel

[B7510HSD]

Can you have more than one wire running thru the same hole/clamp in the panel?? I need to run 3 more circuits and don't have any knock outs left..

 

[yelbike]

You shouldn't run more than two cable assemblies the same hole.

 

[B7510HSD]

You shouldn't run more than two cable assemblies the same hole.

Ok I can make that work I'm getting ready for a rough in inspection soon and I need to finish running the 3 circuits to the new addition!! Thanks

 

[Arkaybee]

Make a new hole with a Lee hole puncher or whatever the term is for the tool--makes neat holes.

HTH
Arkaybee

 

[B7510HSD]

Make a new hole with a Lee hole puncher or whatever the term is for the tool--makes neat holes.

HTH
Arkaybee

Ouch those are expensive..

 

[outinthetalgrass]

Knockout Punch Kit - Knockout Punches at Harbor Freight Tools

these arent that expesive, and work for a couple of knock outs.

 

[Raspy]

You don't need a punch kit, just get a hole saw at the hardware store and run it on your battery drill. Very quick and easy. The same saw will cut many holes if you get a good one.

 

[Qapla]

Or use a step drill bit and stop at the size hole needed for that particular circuit

 

[pat32rf]

While we often do install two wire per connector, you aren't really supposed to. Some inspectors are more fussy than others. You are only allowed three #12 or four #14 in a1/2" raceway. By the time you add the ground wire of the roamex, you would be over your allowable fill.....

 

[yelbike]

While we often do install two wire per connector, you aren't really supposed to. Some inspectors are more fussy than others. You are only allowed three #12 or four #14 in a1/2" raceway. By the time you add the ground wire of the roamex, you would be over your allowable fill.....

Grnd wires don't count in pipe fill. Some inspectors don't understand load derating either.

 

[B7510HSD]

Thanks for all the info we just doubled up three and we will see what happens...There is no way to get at the box really to drill any holes it is very hard just to get at the screws that clamp the wires...

 

[Willl]

Pipe ?, raceway ?

I don't think he's using any type of conduit.

Any hoot, I'd double check about doubling up in your cable clamps.

Easier and faster now than doing it twice later.

 

[B7510HSD]

Pipe ?, raceway ?

I don't think he's using any type of conduit.

Any hoot, I'd double check about doubling up in your cable clamps.

Easier and faster now than doing it twice later.

Yes I think your right he's not calling for the inspection for 2 weeks now so I think I will better than a fail and a reinspection...

 

[yelbike]

Pipe ?, raceway ?

I don't think he's using any type of conduit.

Any hoot, I'd double check about doubling up in your cable clamps.

Easier and faster now than doing it twice later.

When derating wires, cable assemblies running through a hole are treated the same way as pipe fill. Grnd don't count for fill and neutral are dependant if they are considered current carrying conductor(ccc)or not. On a 120/240v system, a neutral in a 14/3 nmd cable is not a ccc but in a 14/2, the neutral does count as ccc. That's why you can run two 14/3 cable assemblies in a single hole. The ccc count is 4 so no deration needed. More inspectors think the maximum is a 14/2 + a 14/3, which is incorrect.

 

[grsthegreat]

ive been putting 2 sets of 2 wire romex (with ground) wires in a knockout hole for over 28 years without any issues. Though for some time ive been using plastic romex connectors instead of the metal 2 screw connectors to prevent any problems. Now when it comes to 14/3 or 12/3 or the larger sets of romex, its one per hole.

 

[Willl]

Actually, I'm surprised there's no more knockouts and yet still room for more breakers.

The few panels I've messed with had enough knockouts to cover the number of breakers.

 

[hr3]

ive been putting 2 sets of 2 wire romex (with ground) wires in a knockout hole for over 28 years without any issues. Though for some time ive been using plastic romex connectors instead of the metal 2 screw connectors to prevent any problems. Now when it comes to 14/3 or 12/3 or the larger sets of romex, its one per hole.

Agree and here is the proof,, http://www.plumbersurplus.com/pdf/3201TB.pdf

 

[grsthegreat]

Agree and here is the proof,, http://www.plumbersurplus.com/pdf/3201TB.pdf

yup, but i use the push in kind.....less labor and im really lazy.

 

[Danno1]

Make a new hole with a Lee hole puncher or whatever the term is for the tool--makes neat holes.

HTH
Arkaybee

Greenlee.


Yes, expensive.


.

 

[crbr]

Thanks for the picture