EET-115 Lab 7 - Raceway - Rigid Pipe

h.1. In an alternating-current system, the maximum size for a copper grounding electrode conductor isA. 250 kcmil.B. 3/0.C. 500 kcmil.D. 4/0. h.2. The figure shows a fault condition in an ungrounded electrical system. Which of the following will occurbecause of the fault in this system?A. Only the overcurrent protector at Point A will trip open.B. The ground fault will heavily damage the service.C. Nothing will happen until a second ground fault occurs.D. The overcurrent protection will trip, shutting off all the line side power.

Find the maximum distance between outlets when using #10 Cu THWN copper wire at 240V on a 20A single phase load w/o exceeding a 3 percent voltage drop.     What is considered the maximum. permissible drop for feeders and branch circuits per the NEC recommendation?

The term "____" is defined in NEC® Article 100 as "connected to establish electrical continuity and conductivity." Select one: A. BENDED (BENDING) B. BONDED (BONDING) C. SHUNTED (SHUNTING) D. GROUNDED (GROUNDING)

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[Fill-in-the-blank] in dwelling units shall supply only loads within that dwelling unit or no loads associated only with that dwelling unit. Select one: a. None of these b. Ground-fault protection c. Service-entrance conductors d. Branch circuits

c.1. Which of the following is one of the three essential functions of an equipment grounding conductor?A. Provide an arc-fault current pathB. Establish groundingC. Establish bondingD. Ensure the system is groundedc.2. What's another name for the three-point method of Earth resistance testing?A. Fall-of-potentialB. Line surgeC. Spatial shieldingD. Leakage current c.3. If the National Electrical Code provides a requirement to ground equipment, it generally implies thatthere will be a direct connection to the Earth of a connection through a/anA. grounding electrode conductor.B. equipment grounding conductor.C. equipotential bonding conductor.D. bonding conductor.

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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.

5. When should corner pull boxes be used in an installation?A. At all 90 degree bendsB. At all bends less than 90 degreesC. At all bends greater than 100 degreesD. At all bends

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10. Main bonding jumpers are required to be made of _______ or other corrosion-resistant material.A. copperB. aluminumC. copper-clad aluminum

Grounding lighting fixtures. Threre are specific requirements for grounding lighting fixtures. How must they be grounded and with what size conductors?

The voltage drop percentage for a panel feeder with a no continuous load of 180A, using 3/0 THWN copper conductors at 480V, three-phase, and a length of 248' is