14. A 200-ampere, 120/240-volt, single-phaseservice is required to supply a single-familydwelling. The NEC permits these conductorsto have ampacity not less than ? of theservice rating.Oa. 0.73 AOb. 0.75 AOc. 0.83 AOd. 0.85 A

According to the National Electrical Code (NEC), conductors must have an ampacity of at least 83% of…

Answered: 14. A 200-ampere, 120/240-volt,…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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5
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Describe the concept of a "smart grid." What are the key technologies and features that make a grid "smart," and how does it improve the efficiency and reliability of power distribution?
Assume that a 10kW air conditioner would run 75% of the time during the peak hour and might be limited by utility remote control to a duty cycle 0f 60%.Determine the following (a) The number of minutes of operation denied at the end of 1 hr of control of the unit. (b) The amount of reduced energy consumption during the peak hour if such control is applied simultaneously to 100,000 air conditioners throughout the system. (c) The total amount of reduced energy consumption during the peak. (d) The total amount of additional reduction in energy consumption in part (c) if T&D losses at peak are 8%.
25. Write the necessity of power supply and briefly describe different types of SMPS and UPS.
A? Conductor is defined in NEC 240.2 as a conductor, other than a service conductor, having overcurrent protection ahead of its point of supply that exceeds the value permitted for similar conductors that are not taps. A. Faulted b. Tap c. Magnetic d. Copper-like
How is the grounded dc conductor of a photovoltaic system required to be identified? a. shall be identified at the time of installation by distintive red markings on some of the terminations b. shall be identified at the time of installation by distintive blue marking at all terminations c. shall be identified at the time of installation by a distintive grouping of wires AWG #2 d. shall be identified at the time of installation by distinctive white marking at all terminations.
The waveform of a voltage source is shown in the given figure. Let A = 2 and B = -3.8. Determine the average power supplied to a 1-ohm resistor connected across the voltage source. The average power supplied to a 1-ohm resistor connected across the voltage source is _______ W.

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14. A 200-ampere, 120/240-volt, single-phase service is required to supply a single-family dwelling. The NEC permits these conductors to have ampacity not less than ? of the service rating. Oa. 0.73 A Ob. 0.75 A Oc. 0.83 A Od. 0.85 A