Answer:
4 1/2 feet (4.5 feet)
Explanation:
Romex is a nonmetallic-sheathed cable and hence it is required that NM cables must be secured or supported by straps, staples, or when it passes through punched holes at intervals that should not be more than 4.5 feet or 1.4m part and within 12 inches of every fitting, junction box, or outlet box. This is as per code and this must be followed strictly.
