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Second Year Final Flashcards | Quizlet The smallest copper service-drop conductors that can be installed for a service are A transformer has a 208 120-volt wye secondary The transformer is delivering 75 amps of line current to a 3 phase load This 3 phase transformer must be rated for at least ____ kVA to avoid being overloaded
425 Flashcards - Quizlet A 13 9-amp, 240-volt load is connected to a 2-pole circuit breaker in a 120 240-volt, 1Ø, 3-wire panelboard using 12-2 AC cable Use K = 11 3 and limit the voltage dropped in the circuit conductors to 2 5%
210. 19 (A) (1) Conductors Minimum Ampacity and Size. Where a branch circuit supplies continuous loads or any combination of continuous and noncontinuous loads, the minimum branch-circuit conductor size, before the application of any adjustment or correction factors, shall have an allowable ampacity not less than the noncontinuous load plus 125 percent of the continuous load
7500W Heater Wire Sizing - Mike Holts Forum When we received the sizing requirements, we found out that the heater needed to be at least 7200W which is not a standard space heater size so it went up to a 7500W Heater
Journeyman Practice Exam #2 Book Flashcards | Quizlet C - Table 300 5, Column 1, shows under this condition, the cables or conductors are to have a minimum earth cover of 18 inches The purpose of Table 300 5 is to reduce the risk of an accident during excavation near underground installed conductors, direct-buried cables, and conduits
Electrical Quiz Flashcards | Quizlet A one-family dwelling unit with a demand load of 200 amperes is supplied with a 120 240 volt, single-phase, electrical system from the local utility company What is the MINIMUM size aluminum THW conductors required for use as service-entrance conductors for this residence?
Master Electricians Exam Prep Guide Exam #2 Flashcards Determine the MINIMUM size THWN copper feeder conductors required by the NEC to supply the following 480 volt, continuous duty, 3-phase, inductions-type, Design C, motors
Solved 11. Which of the following are permitted to serve as - Chegg A 19 7-kW boiler (water heater) is operated at its rated voltage when connected to a 2-pole breaker ina 120 240-volt panel The smallest copper THHN THWN conductors permitted to feed this equipmeen is AWG a 2 b 4 c 1 d 3 e 1 0 15