When running type NM cable through a bored hole in a stud the nearest edge of the bored hole shall not be less than?

When running type NM cable through a bored hole in a stud the nearest edge of the bored hole shall not be less than?

1-1/4 inches
Holes shall be bored so that the edge of the hole is not less than 1-1/4 inches from the nearest edge of the wood member. If you can’t maintain this distance you must protect the cable with a steel plate at least 1/16 inch thick.

Can you run Romex through studs?

Most houses are wired in type NM cable (Romex). When running cable through studs, drill all holes at the same height so that the cable is run level to the floor. Drill holes 6 to 8 in. above or below all switch and receptacle boxes.

When type NM cable is run through a floor it must be protected by at least in mm of?

If the NM cable is installed where it passes through a floor, the cable must be protected for at least 6 inches above the floor by enclosing it in rigid metal conduit, intermediate metal conduit, or one of the other methods previously mentioned.

What is the maximum distance between supports for NM cable?

NM cable must be supported and secured every 4 ½ ft. and within 12 inches of every outlet box, junction box, cabinet, or fitting.

When boring holes through joists or other wood members to run cable or raceways how far from the edge of the wood member must the hole be?

32 mm
In both exposed and concealed locations, where a cable- or raceway-type wiring method is installed through bored holes in joists, rafters, or wood members, holes shall be bored so that the edge of the hole is not less than 1 ¼“ (32 mm) from the nearest edge of the wood member.

What is the difference between Type NM B and Type NMC B cable?

What is the difference between Type NM-B and Type NMC-B cable? NM-B has a flame-retardant, moisture-resistant outer jacket. NMC-B has a flame-retardant, moisture-, fungus-, and corrosion-resistant outer jacket.

How do you run wires through wall studs?

Drill left to right or right to left through a wall stud with power drill and a 1 1/4-inch bit, working through the access openings that you cut in the drywall. Drill one hole through every stud along the wall where the wiring will go. Feed the wire through the hole in the first stud of the series that you drilled.

How many nm cables go through a hole?

The Answer. According to the National Electrical Code, you can have 4 12/2 nonmetallic sheathed cables through a single bored hole that is fire- or draft-stopped using thermal insulation, caulk, or sealing foam, or where proper spacing is not maintained for more that 24 in.

Where type NM cables pass through cut or drilled slots or holes in metal members the cable shall be protected by?

bushings
In both exposed and concealed locations where nonmetallic-sheathed cables pass through either factory or field punched, cut or drilled slots or holes in metal members, the cable shall be protected by bushings or grommets securely fastened in the opening prior to installation of the cable.

When can Romex be exposed?

Common sense and practice says you cannot run romex exposed on the walls in a residential house – only allowed to do that in attics, crawl spaces, garages, unfinished basements, etc.

How far does Romex need to be supported?

Article 336-18 stated that cable must be secured in place at intervals not exceeding 4.5 feet (1.37 m) and within 12 inches (305 mm) from every cabinet, box, or fitting.

How often does Romex need to be supported?

every 54 inches
General Cable Support Runs of NM cable must be supported at least every 54 inches. 1 They also must be secured within 12 inches of an electrical box that includes a cable clamp or within eight inches of a box or enclosure without a cable clamp.

How often does a NM cable need to be supported?

Runs of NM cable must be supported at least every 54 inches. They also must be secured within 12 inches of an electrical box that includes a cable clamp or within eight inches of a box or enclosure without a cable clamp. Keep in mind that “support” does not always mean fastening the cable to framing.

How big of a hole do you need for NM cable?

– NM cable shall be supported within 300mm/1′ of every box or fitting, and at intervals of no more than 1.5m/5′. Holes in joists or studs are considered “supports”.

Can a nonmetallic cable be installed through a hole?

ANSWER: Yes, Section 300-4 (b) (1) requires that, where nonmetallic cables pass through holes or slots in metal framing members, the cable shall be protected by bushings or grommets covering all metal edges and securely fastened in the opening prior to installation of the cable.

What are the different types of NM cable?

There are several different categories of NM cable. BX cable — technically known as armored cable or “AC” has a flexible aluminum or steel sheath over the conductors and is fairly resistant to damage.