26 Multiple Choice 2 points In most cases, the conductor size used to supply power to heating and cooling equipment can be taken directly from the NEC wire sizing table without the need of factoring in voltage drop if the wire length remains under 1,000 feet 50 fee O 500 feet O 100 feet 27 Multiple Choice 2 points Unless updated and replaced, residential structures constructed prior to 1968 are likely to utilize what type of load center? Direct connection load center Breaker panel Single-pole load center Fusible load center 28 Multiple Choice 2 points Which of the following fusible disconnect switches will be used on a three-phase system? Three-wire-two-fuse disconnect Four-wire-two-fuse disconnect Three-wire-one-fuse disconnect Four-wire-three-fuse disconnect 29 Multiple Choice 2 points What factor usually determines the application and amperage carrying capacity a conductor can be used for? The gauge of the conductor only The length of the conductor The type of insulation surrounding the conductor The material makeup of the conductor 30 Multiple Choice 2 points What will be the voltage drop through a 10 AWG copper conductor that is supplying voltage to a condensing unit that is pulling 25 amps? The length of the conductor is 250 feet. 2.5 volts 25.5 volts O 16.3 volts 6.4 volts