101 Basic Series - Module 10 - CEU Education Your final score on this exam will be emailed to you for your records. First name:   Last name:   Company name:   E-Mail Address   City   State   NO STATEALAKASAZARCACOCTDEDCFMFLGAGUHIIDILINIAKSKYLAMEMHMDMAMIMNMSMOMTNENVNHNJNMNYNCNDMPOHOKORPAPRPWRISCSDTNTXUTVTVIVAWAWVWIWY Province (Optional)   Country (Optional)   1 The term used to describe a loadcenter used at the point where the power enters the building is a ____________. Service entrance panel Distribution panel Terminal panel Distribution transformer 2 For safety reasons, the National Electrical Code (NEC) requires the service entrance panel's neutral to be grounded. Any downstream panels have their neutral _______ and _______. Insulated and Isolated Insulated and Terminated Isolated and Terminated Isolated and Bonded 3 A commercial/industrial service entrance panel is supplied with the same power system as a residential panel. True False 4 A device used to divide power and protect branch circuits from overloads and short circuits is called a loadcenter. True False 5 Double-pole circuit breakers plug-in to ______ stab(s) and feed ______ volts. One, 120 Two, 120 One, 240 Two, 240 6 On a Main Lug Only loadcenter, turning one of the branch circuit breakers to the OFF position, will stop power flow to the bus bars and other branch circuit breakers. True False 7 Main service conductors (Mains) bring electricity into a building from the power source. True False 8 Serves as an extension of the incoming power cables (main service conductors) and provides a means of affixing branch circuit breakers. Bonding Strap Twistouts Knockouts Bus Bars Stabs 9 A NEMA Type 1 enclosure: Is for indoor use Provides protection from accidental contact with enclosed equipment Is suitable for applications where unusual service conditions do not exist All of the above 10 A 240-volt circuit typically consists of four wires. They are: 2 hot, 1 neutral, 1 ground 1 hot, 1 neutral, 2 ground 1 hot, 2 neutral, 1 ground 2 hot, 2 neutral, 0 ground 11 The ____________ is where the main upstream circuit protection device has an interrupting rating equal to or greater than the available fault current of the system and downstream devices have lower ratings. Full rating method Equalizing method Series rated method Parallel rated method None of the above 12 Serves as a protective barrier to prevent contact with energized ('hot') parts within the unit. Front Cover Backpan Enclosure Dead Front 13 A residential service entrance panel is typically used to supply lighting, receptacles and appliances in a home. True False 14 Regardless of ampere ratings, a "Lighting and Appliance" type of loadcenter is limited to 42 circuits in one enclosure. True False 15 Half size branch circuit breakers are designed to take up only half as much space in a loadcenter as a normal circuit breaker, but cannot just be installed 2 for 1 in any loadcenter. True False 16 Most homes have ______ amp service, and a 120/240V, single-phase, three-wire system. 50 120 200 500 None of the above 17 The power to a _________________ usually comes from a branch circuit breaker in the service entrance panel. Service entrance panel Distribution panel Termination panel Distribution transfomer 18 One reason for the intentional grounding of electrical equipment is to lower the impedance of the ground path. In the event of a fault, this serves to ________ the current, allowing the overcurrent device to open ________. Decrease, faster Decrease, slower Increase, faster Increase, slower 19 Feed-Through Lugs are a set of terminals in a service entrance panel where feeder cables to a distribution panel are connected. True False 20 Flush mounting is usually applied in industrial applications where the loadcenter is attached to and projects from the wall. True False

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