HVAC Electrical Test Questions with All Correct Answers

HVAC Electrical Test Questions with All Correct Answers There are four principle Electrical Quantities: - Answer-1. Voltage reped by E 2. Amperage reped by I 3. Wattage reped by P 4. Ohms reped by R Ohm's Law is expressed by the principle formula of - Answer-E/I*R The Power Formula is expressed by the principle formula of - Answer-P/I*E To determine the real power capability of an electrical service you must take into account - Answer-Phase, Voltage, and Amperage Having Sub-panels allows for more locally situated branch circuit control and it helps to reduce the likelihood of - Answer-Voltage Drop A NEMA 1 enclosure is for interior usage, whereas a NEMA 4X enclosure is for areas - Answer-Needing wash down, dusty, or corrosive OCP refers to - Answer-Over Current Protection There are two main reasons OCP will open the elastic circuit - Answer-1. Overload resulting from too great a connected load 2. Fault resulting from a wiring error/fault GFCI opens a circuit when current greater than 6 milliamp flows to - Answer-The ground Shunt Trip breakers operate to open a circuit shutting off all - Answer-All electrical equipment under an exhaust hood