Delmar's Standard Textbook of Electricity (MindTap Course List)
6th Edition
ISBN: 9781285852706
Author: Stephen L. Herman
Publisher: Cengage Learning
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Chapter 9, Problem 7RQ
To determine
Value of Current I2
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Equipment Grounding
13. A metal elbow is a part of a nonmetallic, underground raceway. The elbow won't need to be grounded as long as it's encased in at least _______ inches of concrete.
A. 4 B. 5 C. 2 D. 6
13 A. Which of the following can be in the form of a wire and is required to be installed with feeders and branch circuits?
A. Phased neutral conductorB. Equipment grounding conductor C. Grounded neutral conductorD. Grounding electrode conductor
QUESTION 9
What is the minimum sized Rigid Metal Conduit we should use for the above wire run if it is 24 inches long?
a
3/4"
b
1"
c
1 1/4"
d
1 1/2"
QUESTION 3
What is the minimum sized EMT conduit we should use for the above wire run if it is 24 inches long?
a
1/2"
b
3/4"
c
1"
d
1 1/4"
Chapter 9 Solutions
Delmar's Standard Textbook of Electricity (MindTap Course List)
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- It is permissible for an electrician to connect aluminum, copper, or copper-clad aluminium conductors together in the same connector. (True) (False) (Circle the correct answer.)arrow_forwardWhat are the minimum distances or clearances for the following? a. Overhead service conductor clearance over private driveway _____________ b. Overhead service conductor clearance over private sidewalks _____________ c. Overhead service conductor clearance over alleys ______________________________ d. Overhead service conductor clearance over a roof having a roof pitch of not less than 4/12. (Voltage between conductors does not exceed 300 volts.) _______________ e. Overhead service conductor horizontal clearance from a porch _______________ f. Overhead service conductor clearance from a fence that can be climbed on _________arrow_forwardThe branch current ?? is equal to?arrow_forward
- Raceways shall not be used as a means of support for Class 2 conductors except under the provisions of _____. A. NEC 300.16(A)B. NEC 300.13(A)C. NEC 300.11(C)(2)D. NEC 300.15(B)arrow_forwardEquipment Grounding 10. Which of the following statements about ground faults is true?A. They usually occur between any grounded circuit conductor and the equipment grounding conductor. B. They're often normal and typically intentional.C. They can't result from human error.D. They can happen if a conductive tool is dropped in an energized equipment's electrical enclosure.arrow_forwarda system or circuit conductor (one that carries current), that is intentially grounded is referred to as _____arrow_forward
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- please have step by step solution and explain along the way. also please no chatgpt or some sort it is always wrongarrow_forwardQUESTION 14 What is the minimum sized Rigid Metal Conduit we should use for the above wire run if it is over 24inches long? a 1" b 1 1/4" c 1 1/2" d 2"arrow_forwardWhen a service is supplies by a grounded system, the ________ is required to be routed from the utility supply system or source to the service disconnecting means enclosure and bonded to the service disconnecting means enclosure. a)Equipment bonding jumper b) Grounded conductor c) Grounding electrode d) Equipment grounding conductorarrow_forward
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