11/04/2026
I'm a homeowner in Ontario, Canada, currently doing the electrical rough-in for a home renovation. I'm trying to make sure everything complies with the Ontario Electrical Safety Code (OESC) before my ESA inspection.
I understand that Romex (NMD90) needs to be kept at least 1¼ inches from the edge of a stud to protect it from drywall screws and nails.
Here's where I'm confused.
I'm using standard 2×4 studs with plastic electrical boxes mounted to them. The cable entry points on the boxes are closer to the edge of the stud than 1¼ inches.
Even if I secure my Romex in the centre of the stud, the cable naturally has to bend toward the front or back of the stud to enter the box.
Does the 1¼-inch clearance rule still apply to the short section of Romex immediately before it enters an electrical box?