ELECTRICITY FOR TRADES (LOOSELEAF)
3rd Edition
ISBN: 9781260437454
Author: Petruzella
Publisher: MCG
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Textbook Question
Chapter 1.2, Problem 15RQ
Assume a piece of electrical equipment has been listed by the Underwriters Laboratories. What does this indicate?
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Chapter 1 Solutions
ELECTRICITY FOR TRADES (LOOSELEAF)
Ch. 1.1 - Does the severity of an electric shock increase or...Ch. 1.1 - In general, voltage levels above what value are...Ch. 1.1 - In general, current levels above what value are...Ch. 1.1 - What circuit fault can result in an arc flash?Ch. 1.1 - Define each of the following terms associated with...Ch. 1.1 - Explain why an arc flash is so potentially...Ch. 1.1 - What is a permit-required confined space?Ch. 1.1 - What does the term personal protective equipment...Ch. 1.1 - What personal protective attire is required when...Ch. 1.1 - When should face shields be worn?
Ch. 1.1 - A fall arrest system must be rigged so that...Ch. 1.1 - A ladder is used to reach the top of a building 16...Ch. 1.1 - What are the deck requirements for a scaffold work...Ch. 1.1 - Prob. 14RQCh. 1.1 - List the three ingredients required to sustain a...Ch. 1.1 - Which classes of fire are multipurpose...Ch. 1.1 - List four hazardous properties or characteristics.Ch. 1.2 - Prob. 1RQCh. 1.2 - Compare the terms grounding and bonding.Ch. 1.2 - Why is the earth not considered to be an effective...Ch. 1.2 - Explain what is meant by a ground fault.Ch. 1.2 - How does a ground-fault circuit interrupter (GFCI)...Ch. 1.2 - How does a ground-fault circuit interrupter (GFCI)...Ch. 1.2 - Explain what is meant by an arcing fault.Ch. 1.2 - Compare the amount of current that results from...Ch. 1.2 - Compare what GFCIs and AFCIs protect against.Ch. 1.2 - What does a lockout-tagout procedure refer to?Ch. 1.2 - Prob. 11RQCh. 1.2 - A voltmeter is used to verify that no voltage is...Ch. 1.2 - What is the main goal of OSHA?Ch. 1.2 - What is the primary purpose of the rules set forth...Ch. 1.2 - Assume a piece of electrical equipment has been...Ch. 1.2 - How often is the National Electrical Code updated...
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- 6. when seeking to measure the voltage of an industrial power supply (600 Volts AC) an electrician needs to do the following to prepare the Simpson 260 meter for measurement (insert the words to make the following statements correct). a. Set the function switch to b. The black lead should be inserted in the jack. C. The red lead should be inserted in the jack. d. The range switch should be set to the position. Did you note the safety warnings in this section? Fairly significant, eh?! Nothing to mess around with!! 7. Why must you "zero" the meter (adjust it for zero (0)) when measuring resistance? 8. Describe the steps needed to accomplish the task of zeroing the meter. (4pts) For the following questions, refer to section 4.19 in the Simpson meter manual. 9. The Rx 1 resistance range is intended for resistances between and Ω. 10. The R x 100 range is intended for resistances between and Ω. 11. The Rx 10,000 range is intended for resistances over 0450…arrow_forward12. Which Insulators can be used for both horizontal and vertical positioning? A. SUSPENSION TYPE INSULATORS B. SHACKLE TYPE INSULATORS C. PIN TYPE INSULATORS D. POST TYPE INSULATORSarrow_forwardMultiple Choice. Refers to a point in a circuit where three or more wires are connected. A. Conductor B. Junction C. Loop D. Resistorarrow_forward
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