Lab 5

Which of the following statements about equipment grounding conductors (EGCS) is true? A. The National Electrical Code permits the EGC to also perform as a grounding electrode conductor. B. More than one EGC must be used if multiple circuits are installed in a single raceway, cable, or cable tray. C. No current should be present in the EGC during normal operation. D. EGCs are required to be decreased in size to address voltage drop.

Which of the following statements about equipment grounding conductors (EGCs) is true?A. The National Electrical Code permits the EGC to also perform as a grounding electrode conductor.B. More than one EGC must be used if multiple circuits are installed in a single raceway, cable, or cable tray.C. No current should be present in the EGC during normal operation.D. EGCs are required to be decreased in size to address voltage drop.

6. According to the NEC, allowance for the future expansion of installations isA. an exception.B. in everyone's best interest.C. defined.D. a requirement.

1.1 PV modules can be wired together in an array using ______ connections to increase voltage. a. Terminating b. Series c. Parallel d. AC 1.2 A PV module, also called a solar panel, is comprised of individual photovoltaic _______ wired and mounted together as an integrated unit. a. Capsules b. Compartments c. Chips d. Cells   1.3 A __________ system uses a storage system that stores the generated electricity so it can provide during times when the system’s panels are not receiving solar energy. a. Direct coupled b. Self regulating c. Charge controlled d. Indirectly connected   1. 4 __________ energy may have the potential to supply all of the world's energy needs, but at this time, it provides a very small percentage. a. Coal b. Natural Gas c. Diesel d. Solar

The circuit breaker cubicles illustrated in your reading material each contain____circuit breakers. A. Two B. Three C. Four D. Six

schedules are typically provided to detail the circuits and overcurrent protection required for listribution equipment. Branch-circuit - Outlet C. d. ore distribution points for electrical in .... Switch Panelboard

7.A. Ferrous metal raceways or enclosures are made with _______ content.A. steel or brassB. aluminum or ironC. brass or aluminumD. iron or steel7.B. The size of a grounding electrode conductor for a service or separately derived system is generally basedon the size of the largestA. ungrounded supply conductor.B. equipment grounding conductor.C. grounded electrode.D. bonding jumper.7.C. Which of the following statements about bonding is true?A. The joint or termination must offer opposition in the circuit for effective electrical connections.B. Effective bonding keeps impedance high if a fault should occur.C. The entire electrical safety circuit is only as good as its strongest bonded link.D. Bonding connections must endure high levels of fault current until overcurrent protective devices can operate.

a.1. A main bonding jumper must only be foundA. within enclosures serving as sub-panels.B. at the grounding electrode.C. on the load side of a GFCI.D. within the enclosure that houses the service disconnecting device.a.2. Which of the following statements about grounding electrode conductors is true?A. They restrict the ground connection.B. They eliminate potential differences between conductive objects and the Earth electrode.C. They facilitate operation of overcurrent protective devices.D. They perform bonding between the Earth and grounded conductors.a.3. Main bonding jumpers are required to be made of _______ or other corrosion-resistant material.A. brassB. aluminumC. copperD. copper-clad aluminum

3. Which of the following statements about the use of structural steel as an equipment grounding conductor(EGC) in an AC system is correct?A. Structural steel isn't allowed for use as an EGC.B. Structural steel can be used as an EGC bonding jumper between panelboards.C. Structural steel must have an EGC bonding jumper every three feet of structure.D. Structural steel can be used as an EGC when it's bonded at both ends.

7.B. The size of a grounding electrode conductor for a service or separately derived system is generally basedon the size of the largestA. ungrounded supply conductor.B. equipment grounding conductor.C. grounded electrode.D. bonding jumper.7.C. Which of the following statements about bonding is true?A. The joint or termination must offer opposition in the circuit for effective electrical connections.B. Effective bonding keeps impedance high if a fault should occur.C. The entire electrical safety circuit is only as good as its strongest bonded link.D. Bonding connections must endure high levels of fault current until overcurrent protective devices can operate.

Explain each option & Choose the correct option. 4) The _ calculated load is rarely placed on an electrical system.A. optionalB. standardC. total 5) What's the primary disadvantage of using copper conductors?A. CostB. AvailabilityC. Weight 6) You're evaluating the components of a multioccupancy building that won't have an on-site employee. To be compliant with the NEC, each occupant will need to have access to their ownA. service-disconnecting means.B. service conductor.C. cable attachment point.D. emergency fire water pump disconnect ..

1)The NEC Style Manual indicates that if a term in the NEC appears in more than two articles, it qualifies for a definition in which of the following. a) The articles where the term appears b) Article 90 c) Article 100 d) Table of Contents  2)Definitions of terms related to grounding and bonding and used only in Article 250 are located in ________.a) Article 100 b) Article 200 c) Chapter 9 d) Section 250.2  3)As a general rule, when installing ground rod electrodes, two must be installed always unless a single ground rod provides not more than 25 ohms’ resistance to ground. a) True b) False

If an electrical system operates at a potential higher than 600 volts, the nonmetallic conduit must be encased in at least_of concrete. A. 1 inch B. 2 inches C. 4 inches D. 6 inches

The system having ±0.5% of F.S.D if the full scale deflection is 50 units, then accuracy is _____ a. ±0.25 b. ±1 c. ±0 d. ±0.5

1)Aluminum piping is permitted to be used as a grounding electrode only if other electrodes specified in 250.52(A) are not available for use. a) True b) False  2)The Code requires that more than one grounding electrode be installed to form a system of installed electrodes when none are present. a) True b) False

If a recessed  luminary without an integral junction boxes installed what extra wiring must be provided

if present, are required to be bonded together to form a grounding electrode system. What article does this refer to in the NEC 2017?

13.a. Which device is intended for the protection of personnel that functions to de-energize a circuit or portionthereof within an established period of time when a current to ground exceeds the values established for aClass A device?A. GFPEB. ECGC. GFCPD. GFCI 13.b. Only qualified persons are permitted to work on or near energized equipment of ______ or greater.A. 120 VB. 50 VC. 208 VD. 240 V

7. If a grounded surface metal box makes direct contact with the mounting strap for a switch or receptacle,then theA. bonding jumper can be undersized.B. neutral conductor will operate as the equipment grounding conductor.C. bonding jumper isn't required.D. device must be protected with a GFCI device.

TRUE OR FALSE? Prior period error are corrected current and prospectively.