Electrical Wiring Residential
18th Edition
ISBN: 9781285170954
Author: Ray C. Mullin, Phil Simmons
Publisher: Cengage Learning
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Textbook Question
Chapter 33, Problem 3R
Name four electrical hazards associated with photovoltaic systems: ___________
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A group of modules that form a complete photovoltaic power system is known as a(n)_______.
a. solar cells
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c. a series-staring of cells
d. panel
The process of initial start-up for a utility-interactive photovoltaic system is known as _______?
a. pre-operational test prior to inspection by AHJ
b. commissioning
c. going live
d. secundary inspection
___________ is an Area on a device characteristic where the ratio between applied voltage and resulting current is constant.
Chapter 33 Solutions
Electrical Wiring Residential
Ch. 33 - Prob. 1RCh. 33 - Prob. 2RCh. 33 - Name four electrical hazards associated with...Ch. 33 - Name five components of a utility-interactive...Ch. 33 - Which conductor types are permitted to be...Ch. 33 - To size conductors and overcurrent devices for...Ch. 33 - When is a metallic raceway required for...Ch. 33 - Photovoltaic modules that also serve as an outer...Ch. 33 - Grounding electrode system requirements for a...Ch. 33 - The two methods permitted for connection of a...
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- Building Service Subjectarrow_forwardPotential energy, or voltage, introduced into a circuit is called a(n) ____________________.arrow_forwardf.1. Since the footing or foundation is generally part of the grounding electrode system, the _______electrode is one of the first electrodes installed.A. metal water pipeB. plateC. concrete-encasedD. ground ringf.2. When you're connecting the grounding electrode conductor to a metal water pipe as it enters a building,the connection must be made within _______ feet of the pipe's entrance to the building.A. 10B. 5C. 15D. 7f.3. Which National Electrical Code table is used for sizing grounding electrode conductors?A. Table 250.102(C)(1)B. Table 250.66C. Table 250.122D. Table 250.118(6)(a)arrow_forward
- KVLLoop abfea: __________________________________________________Loop cdhgc: __________________________________________________Loop bcgfb: ___________________________________________________arrow_forwardAssignment on Threaded jointsDue date:__________________ ___________________ ________________ Surname Given names IDA power line tower is erected to support a high-voltage power line (see figure below),which includes six phase conductors and three Earth shield wires. The tower isfabricated as a steel structure resting on four square supporting feet bolted to aconcrete foundation with four Anker bolts at each support (see figure below). Theresultant tension force FT from cables on each side of the tower is applied at point m,and can be at 60o to the horizontal plane (sagging downwards) if the tower is installedon a plane or at 30o to the horizontal plane pointed upwards if the tower is installed on ahilly landscape. The gusty wind load, which could be represented with a resultant forceof Fw is applied at the geometric centre of the tower n in any direction in the horizontalplane (see figure below) and tends to shift the tower sideways and topple it. In the caseof an accident when all…arrow_forwardWhat follows is a numeric fill in the blank question with 3 blanks. Figure 1 shows the three phases V-t graph in Turkey. Please write the indicated values with their units in boxes and Voltage - time function of each phase in table below. Please write the units in the second box. 1= _______________ V 2= ________________ms 3= _______________msarrow_forward
- Installation of electric-discharge auxiliary equipment (such as fluorescent, mercury-vapor, and sodium fixtures) is limited to outdoor areas such as roads, bridges, athletic fields, and parking lots. The lamps shall be mounted in permanently installed fixtures where the fixtures are mounted not less than ________ in height on poles or similar structures. A. 22 feet B. 18 feet C. 15 feet D. 30 feetarrow_forwardElectrical plants Define the terms "Main column ." " Line ." " Protection earth " and " Operating eartharrow_forward1. Alternating current systems of less than _______ volts are required to be grounded if they're installed outside as overhead conductors. A. 50 B. 100 C. 75 D. 120arrow_forward
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