Ground fault protection of-equipment shall be provided forsolidly grounded wye electricalservices of more than 150 voltsto ground, but not exceeding1000V phase - to - phase for eachservice disconnecting meansratedA. 1000B. 1500C. 2000D. 2500amperes or more.

The correct answer to the question is: A. 1000 amperes Here's the explanation: 1. Reference to NEC…

Answered: Ground fault protection of - equipment…

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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For motor Branch circuits, the maximum setting of a conventional inverse - time circuit breaker must not exceed____of the full- load current of the motor. a.100% b.125% c.200% d.250%
#14,#17
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The ratings of a 3-phase circuit breaker are 1000 A. 500 MVA, 66 kV, 3 seconds. Then find (1) Rated service voltage (2) Rated current (3) Breaking capacity (4) Rated symmetrical breaking current (5) Rated making current (6) Short time rating. ??
Solution in typing please
X.a- 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.
7. What arrester nominal rating shall be used in a 13.8 KV grounded system? How and why? • 11 KV• 18 KV• 15 KV• 21 KV
5. Which of the following tests requires the supply to be energised? A) Continuity of circuit protective conductors B) Earth fault loop impedance Insulation resistance D) Continuity of ring final circuit conductors
Why are single-phase distribution transformers made whit the low-voltage winding in two sections? A- to make two voltages available on the secondary side, B- to minimize losses, C- to provide a spare, D- none The neutral conductor on the secondary side of a single-phase 3-wire distribution transforme carries the____. A- total load current of both outside conductors. B- product of currents in both of the outside conductors, C- difference in the currents between both the outside conductors, D- none The primary purpose of a control transformer is to reduce the line ...... A- current to the value needed to operate control circuits, B- wattage to the value needed to operate control circuits, C-voltage to the value needed to operate control circuits, D- none
A 112.5 kva, 480v primary to 120/240v secondary, three-phase transformer with a 300 amp secondary overcurrent device will require at least _______ size secondary conductors a. 750 kcmil b. 300 kcmil c. 500 kcmil d. 350 kcmil
A grounding-fault current path is an electrically conductive path from a point of a line-to-case fault extending to the _________.
19.Before determining the algebraic sum of voltages using Kirchhoff's voltage law, you must first determine which end of ____________ element is positive and which is negative.

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Ground fault protection of - equipment shall be provided for solidly grounded wye electrical services of more than 150 volts to ground, but not exceeding 1000V phase - to - phase for each service disconnecting means rated A. 1000 B. 1500 C. 2000 D. 2500 amperes or more.