Fire Detection, Protection and Suppression Systems No. 3 Questions taken from Jones & Bartlett Fundamentals of Fire Fighter Skills (3rd Edition) Progress Indicator: Question 4 of 17 4.  Cable reels must be installed on all equipment that receives electric power through cables and travel: Choices: Not over two miles per hour More than 2½ miles per hour Distances that exceed 1,000 feet Grades exceeding 2½ percent