Find the wire size needed to keep the voltage drop to no more than 3% on a single-phase, 240, air-conditioner circuit. The nameplate reads: “Minimum Circuit Ampacity 40 Amperes” The circuit originates at the main panelboard located approximately 65 ft. from the air conditioning unit. No neutral conductor is required.   Ed = result of voltage drop calculation in volts K = approximate resistance in ohms per circular-mil foot at 75°C I = current in ampere flowing thru the conductor L = length in feet from beginning of circuit to the load   NOTE: refer to table for CMA value (NEC Chapter 9 Table 8). NOTE: Reference NEC Table 310.15(B) (16) for Minimum Circuit Ampacity. Group of answer choices A. 8 AWG copper conductor. B. 10 AWG copper conductor. C. 12 AWG copper conductor. D 14 AWG copper conductor.

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Dielectric Breakdown

A dielectric is a material with low electrical conductivity and so is classified as an insulator. Dielectric materials are used to block the flow of electricity through them, allowing them to behave as an insulators. They can also be used to store electric charge or improve capacitance.Dielectrics have no free electrons for conduction because electrons are tightly bound to the nucleus. Because dielectrics contain a small number of electrons for electrical conductivity, they have a dipole. The two primary roles of dielectrics in electrical devices are insulation and electrical energy storage. An electric field polarizes the dielectric, and the polarization of the molecules allows dielectric materials to store charge.