Electrical Rough-In

First, go through a structure and mark the locations of all devices and fixtures on the framing members. Then install all electrical boxes so their faces are flush with the finish surface of the wall or ceiling. 

Most houses are wired in type NM cable (Romex). All wiring should be neat and align with vertical and horizontal building lines (Figure A and Figure B). One exception is in inaccessible attics where diagonal wiring paths may be acceptable (Figure C).

Figure A: Running Cable through Stud and Joist Bays
When running cable along the length of studs or joists, keep the cable to the center of each, leaving a 1 1/4-in. minimum clearance on each side of the framing member. 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 running cable along the length of studs or joists, keep the cable to the center of each, leaving a 1 1/4-in. minimum clearance on each side of the framing member. 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.

Figure B: Running Cable in Basements
Do not run No. 14-, 12-, or 10-gauge cable across joists or along the bottom edge of joists. They should run along the sides of joists, through bored holes, or along a continuous 1x attached to the joists.
Do not run No. 14-, 12-, or 10-gauge cable across joists or along the bottom edge of joists. They should run along the sides of joists, through bored holes, or along a continuous 1x attached to the joists.
Figure C: Running Cable Through Inaccessible Attics
Accessible attics with permanent stairs or built-in ladders require board protection throughout the attic on floors and walls/ceilings.  In accessible attics without permanent ladders or stairs, such protection is only required within 6 feet of the access opening.  In attics less than 30-in. high, no access is required.  Where there is no access whatsoever, there are no requirements for protection.
Accessible attics with permanent stairs or built-in ladders require board protection throughout the attic on floors and walls/ceilings.  In accessible attics without permanent ladders or stairs, such protection is only required within 6 feet of the access opening.  In attics less than 30-in. high, no access is required.  Where there is no access whatsoever, there are no requirements for protection.


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