ELECTRICAL WIRING:RESIDENTAL-6 PLANS
18th Edition
ISBN: 9781305098329
Author: MULLIN
Publisher: CENGAGE L
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Chapter 28, Problem 8R
List the standard sizes of fuses and circuit breakers up to and including 100 amperes. ____
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1. A14/2 type copper used for a general lighting branch circuit. Ampacity:______________ Maximum Fuse or Circuit Breakers Sizes:________________ 2.Three 8 AWG copper conductors with THHN insulation Installed in garage in electrical metallic tubing (EMT). The ambient temperature in the garage can reach as high as 110'F. All termination points for this circuit are rated 60'C. Ampacity:______________ Maximum Fuse or Circuit Breakers Sizes:________________ 3.Four 4 AWG copper conductor with THWN insulation imstalled in EMT in a basement. All termination points are rated at 60'C.
Ampacity:______________ Maximum Fuse or Circuit Breakers Sizes:________________ 4. An 8/3 Type UF copper cable installed underground from a house to a detached garage to feed a 120/240-volt subpanel. All termination points are rated at 60'C.…
A device used in kitchen serving hotels dining rooms club houses and restaurants is__________.
a.) Grease basin b.) Yard basin c.) Garage basin d.) Oil catch basin
A circuit breaker is _______________________
a.
used to detect a fault
b.
has a fuse elment
c.
has 3 contacts
d.
used at low voltage only
Chapter 28 Solutions
ELECTRICAL WIRING:RESIDENTAL-6 PLANS
Ch. 28 - What is the minimum size service for a one-family...Ch. 28 - Prob. 2RCh. 28 - Prob. 3RCh. 28 - Prob. 4RCh. 28 - Prob. 5RCh. 28 - Prob. 6RCh. 28 - Prob. 7RCh. 28 - List the standard sizes of fuses and circuit...Ch. 28 - Prob. 9RCh. 28 - Using the method shown in this unit, what is the...
Ch. 28 - State four possible combinations of service...Ch. 28 - Which Code section states that all overcurrent...Ch. 28 - All electrical components have some sort of...Ch. 28 - Arc-fault damage is closely related to the value...Ch. 28 - The utility company has provided a letter to the...Ch. 28 - While working on the main panelboard that is...Ch. 28 - Repeat problem 16 for a main service panel that...Ch. 28 - NEC ______________________________ generally...Ch. 28 - Prob. 19RCh. 28 - Prob. 20RCh. 28 - Overcurrent devices must be accessible. (True)...
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- QUESTION 4 a) State three each: “ DOs “ and “ DON'Ts “ associated with electrical equipment operation on board ship. b) Differentiate between open circuit fault, earth fault and short circuit fault. Which of these has the most devastating effect and why?arrow_forwardschedules are typically provided to detail the circuits and overcurrent protection required for listribution equipment. Branch-circuit - Outlet C. d. ore distribution points for electrical in .... Switch Panelboardarrow_forwardElectrical plants Define the terms "Main column ." " Line ." " Protection earth " and " Operating eartharrow_forward
- The BEST choice electronic device to turn a device at a particular voltage is a/an _____. A. PUT B. SCR C. DIAC D. SCSarrow_forward____ current occurs when the system neutral is grounded improperly downstream from the service equipment. Select one: A. PHASED B. OBJECTIONABLE C. POSITIVE D. NEGATIVEarrow_forwardConnect the initial circuit as shown in Figure 47-1.2. Set VA at 20 volts. Insert a jumper wire between points A and B and observe the meter action.OBSERVATION Current flowed for approximately ___________ seconds as evidenced by the voltagemeasured across R. The rate of charge was (linear, nonlinear) __________________.nCONCLUSION The current that flowed was the charging current that charged the capacitor to avoltage equal to (VR, VA) ____________________. Was charging current maximum atthe beginning of the charge time or near the end? _________. At the beginning of thecharge time, the voltage across R was equal to (VC , VA) _______________________(the first instant). At the end of the charge time, the voltage across the resistor is________ volts; the voltage across the capacitor is equal to VA.arrow_forward
- The ________parameters may not reflect the actual operating conditions but simply provide an indication of the level of each parameter to expect for general use. a.hybrid-pi b.hybrid c.pi d.rearrow_forwardC: What are the two purposes of using the circuit breakers?arrow_forwardQ1/ Explain briefly the following: (2 a) The diaphragm inside the expansion devices. b) Material, which used to manufacture air conditioning pipes and air duct. c) Motor slip. d) Flaring tool. e) Evaporators.arrow_forward
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