jetlag
Senior Member
- Location
- Eatonton, Georgia
Cant find it now, does any one know the code that says the outer sheath on nm must enter a box min 1/4 '' and a max of 1/2 '', that might be for distance past a box clamp
nail on knock out
- Thread starter jetlag
- Start date
- Status
Cant find it now, does any one know the code that says the outer sheath on nm must enter a box min 1/4 '' and a max of 1/2 '', that might be for distance past a box clamp
JohnJ0906
Senior Member
- Location
- Baltimore, MD
314.17(C) has the 1/4" minimum, but no maximum is stated. Perhaps that is a local amendment.
JohnJ0906
Senior Member
- Location
- Baltimore, MD
Oddly enough, there is no requirement with metal boxes - the above section is for nonmetallic boxes.
jetlag
Senior Member
- Location
- Eatonton, Georgia
thanks john
thanks john
Keep looking it is there some where , other wise people would exceed box fill with cables in box. unless it has been droped from code the max was 1/2 inch past clamp. The metal box is included also , or people could tighten clamp on conductors with sheath removed.
thanks john
Keep looking it is there some where , other wise people would exceed box fill with cables in box. unless it has been droped from code the max was 1/2 inch past clamp. The metal box is included also , or people could tighten clamp on conductors with sheath removed.
Last edited:
jxofaltrds
Inspector Mike®
- Location
- Mike P. Columbus Ohio
- Occupation
- ESI, PI, RBO
The 1/4" may not be in 314.17(B) however the first line of 314.17 says " Conductors entering boxes, conduit bodies, or fittings shall be protected from ' abrasion' ***".
I do not think any inspector would 'try' to measure the 1/4" in a box.
If the sheathing is passed the clamp or box I'll bet it passes.
jetlag
Senior Member
- Location
- Eatonton, Georgia
People can easily eyeball that 1/8 is no where near 1/4 , I go 1/2 eyeball so not worry , if AHJ doesnt like you or just loves to flag , will flag 1/8
jxofaltrds
Inspector Mike®
- Location
- Mike P. Columbus Ohio
- Occupation
- ESI, PI, RBO
Agreed. While code, any inspector that would flag that should not be inspecting.
- Status