Electrical Inspection - Test 1

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11/21/23, 5:21 AM Test 1 - Service Drop & Service Entrance - Requires Respondus LockDown Browser: Electrical Inspection Test 1 - Service Drop & Service Entrance - Requires Respondus LockDown Browser Due No due date Points 50 Questions 50 Time Limit 60 Minutes Requires Respondus LockDown Browser This quiz is currently locked. Attempt History Attempt Time Score LATEST Attempt 1 37 minutes 39 out of 50 (D Correct answers are hidden. Score for this quiz: 39 out of 50 Submitted Nov 10 at 5:45pm This attempt took 37 minutes. Question 1 1/1 pts You notice rust in the service panel. Which of the following may be the cause? A) no drip loop B) undersized conduit C) damaged masthead D) no utility seal at the meter E) both (a) and (c) https://mynew.aolcc.ca/courses/6776/quizzes/28348?module_item_id=711845 1/29
11/21/23, 5:21 AM Test 1 - Service Drop & Service Entrance - Requires Respondus LockDown Browser: Electrical Inspection : Please refer to Section 5.1.1 - 5.1.2. Question 2 1/1 pts Aluminum branch circuit wiring was commonly used from 1920 to 1950 1980 to 1988 1965 to 1978 1940 to 1958 1950 to 1968 : Please refer to Section 2.2.3. Incorrect Question 3 0/1 ptS The voltage potential between two ungrounded 120-volt conductors is 120V 240V oV OV or 240V https://mynew.aolcc.ca/courses/6776/quizzes/28348?module_item_id=711845 2/29
11/21/23, 5:21 AM Test 1 - Service Drop & Service Entrance - Requires Respondus LockDown Browser: Electrical Inspection 60V : Please refer to Section 3.0. Question 4 1/1 pts The main service fuses have been installed with the labels facing backward, not allowing you to read their rating. No other markings are visible. You should turn off the house power and remove a fuse to check its rating measure the diameter of the fuse body to determine its rating report that the main service fuse rating was not determinable carefully insert your inspection mirror until the label is visible, then read the rating from the label report that this is a defect and recommend immediate repair : Please refer to Section 6.2. Question 5 1/1 pts The unit for the measure of electrical power is amps https://mynew.aolcc.ca/courses/6776/quizzes/28348?module_item_id=711845 3/29
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11/21/23, 5:21 AM Test 1 - Service Drop & Service Entrance - Requires Respondus LockDown Browser: Electrical Inspection watts joules KWh ohms : Please refer to Section 3.0. Question 6 1/1 pts The power available in a typical 15A, 120V household circuit is 1500W 1000W 1800W 3600W 800W : Please refer to Section 3.0. Question 7 1/1 pts A 1500 square foot house has an electric stove, electric dryer, central air conditioning (FLA = 18 amps), and a recent basement renovation that https://mynew.aolcc.ca/courses/6776/quizzes/28348?module_item_id=711845 4/29
11/21/23, 5:21 AM Test 1 - Service Drop & Service Entrance - Requires Respondus LockDown Browser: Electrical Inspection included the installation of a 3000 watt sauna. If it has a 60A service, you should report that the existing service is adequate the existing service will support additional loads the service should be upgraded additional loads should be upgraded, otherwise the service is okay the sauna should be used in winter only : Please refer to Section 6.2. ncerrest Question 8 0/1 pts If P=120 watts, and the circuit powers only the outlet that a gas dryer is plugged into, what is 17 0.5A 120 ohms 1.0A 1.0W 144A : Please refer to Section 3.0. https://mynew.aolcc.ca/courses/6776/quizzes/28348?module_item_id=711845 5/29
11/21/23, 5:21 AM Test 1 - Service Drop & Service Entrance - Requires Respondus LockDown Browser: Electrical Inspection Question 9 1/1 pts Four service entrance conductors indicate a 240V service a three-phase service a 120V service a 400A service a 240V service supported by a guy : Please refer to Section 4.0. Question 10 1/1 pts You notice that the service drop and service entrance conductors are bare at the splice. You should report this as a safety hazard accept this as normal and acceptable wrap them in tape, if you carry any consider this acceptable if the conductors are secure none of the above https://mynew.aolcc.ca/courses/6776/quizzes/28348?module_item_id=711845 6/29
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11/21/23, 5:21 AM Test 1 - Service Drop & Service Entrance - Requires Respondus LockDown Browser: Electrical Inspection : Please refer to Section 5.1.9. neorrect Question 11 0/1pts A 100A service for a 1000 square foot house with 3 bedrooms, an electric stove, an electric dryer, a 2-ton central A/C unit (FLA =12 amps), and two 1500W 240-volt electric baseboard heaters would be considered clearly inadequate marginal at best adequate for no more than two adults most likely adequate clearly oversized : Please refer to Section 6.2. Question 12 11/1 pts When did grounded plugs (three-prong plugs) become standard for all branch circuits? 1930s early 1950s early 1960s https://mynew.aolcc.ca/courses/6776/quizzes/28348?module_item_id=711845 7/29
11/21/23, 5:21 AM Test 1 - Service Drop & Service Entrance - Requires Respondus LockDown Browser: Electrical Inspection around 1975 1940s : Please refer to Section 2.2.3. Question 13 1171 pts If you used a multimeter to measure the current in a 3000W electric water heater that uses both of the ungrounded ("hot") service conductors, it would read 25A 240V 12.5A 120V 1500A : Please refer to Section 3.0. Question 14 1/1 pts An ungrounded conductor is uninsulated https://mynew.aolcc.ca/courses/6776/quizzes/28348?module_item_id=711845 8/29
11/21/23, 5:21 AM Test 1 - Service Drop & Service Entrance - Requires Respondus LockDown Browser: Electrical Inspection called the neutral usually white in color often called the hot conductor always a stranded wire : Please refer to Section 2.2. Question 15 1/1 pts The grounded service conductor is called the neutral connects to the water pipe and/or the ground rod is often black in color cannot be aluminum must be bonded to the gas piping : Please refer to Section 2.2. Question 16 111 pts Electrical resistance https://mynew.aolcc.ca/courses/6776/quizzes/28348?module_item_id=711845 9/29
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11/21/23, 5:21 AM Test 1 - Service Drop & Service Entrance - Requires Respondus LockDown Browser: Electrical Inspection increases with increasing wire diameter decreases with increasing wire diameter decreases with increasing wire length is the only factor that determines the current carrying capacity of the wire is higher for copper than aluminum : Please refer to Section 3.0. neerrest Question 17 0/1 pts Assuming copper, standard wire type, and normal temperature, what is the typical conductor size (in AWG) for a 30A service? #10 #H6 1/0 2/0 3/0 : Please refer to Section 6.1. https://mynew.aolcc.ca/courses/6776/quizzes/28348?module_item_id=711845 10/29
11/21/23, 5:21 AM Test 1 - Service Drop & Service Entrance - Requires Respondus LockDown Browser: Electrical Inspection | neerrest - Question 18 0/1 pts What valuable information can be obtained by looking at the electrical meter of the house? the exact amount of electricity being consumed at that instant the service amperage the maximum service that the house can support none the age of the house : Please refer to Section 6.2. Question 19 171 pts What would two wires entering the service weatherhead indicate to you? a three-phase system an older 120V system a 100A service a 240V system none of the above https://mynew.aolcc.ca/courses/6776/quizzes/28348?module_item_id=711845 11/29
11/21/23, 5:21 AM Test 1 - Service Drop & Service Entrance - Requires Respondus LockDown Browser: Electrical Inspection : Please refer to Section 4.1. neorrect Question 20 0/1pts Which one of the following is NOT a possible cause of the service mast conduit or cable letting water in? poor workmanship movement of the components deterioration of materials over time conduit undersized building settlement : Please refer to Section 5.1.9. Question 21 1/1 pts The term service drop defines the underground wires from the utility to the point of connection to the house the wires that connect the meter to the service box https://mynew.aolcc.ca/courses/6776/quizzes/28348?module_item_id=711845 12/29
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11/21/23, 5:21 AM Test 1 - Service Drop & Service Entrance - Requires Respondus LockDown Browser: Electrical Inspection the wires that run down the outside of the house into the meter the wires inside the conduit connecting the service box with the distribution panel the overhead wires coming from the utility pole to the point of connection in the house : Please refer to Section 4.0. Question 22 1/1 pts A 60A service IS not allowed in new construction in North America requires a minimum #3 AWG copper wire Is dangerous is not suitable for a 240V service can be adequate in some cases : Please refer to Section 6.1. Question 23 171 pts https://mynew.aolcc.ca/courses/6776/quizzes/28348?module_item_id=711845 13/29
11/21/23, 5:21 AM Test 1 - Service Drop & Service Entrance - Requires Respondus LockDown Browser: Electrical Inspection Overhead service wires in most areas, must be 3 feet away from windows have no restriction, generally, on the height of the connection point to the house must clear a flat roof by 3 feet or more, in most areas cannot be run over decks under any circumstances must be at least 10 feet above a driveway : Please refer to Section 4.2.5. Question 24 1/1 pts At the drip loop you notice that the service drop conductors are smaller in diameter than the service entrance conductors. You conclude it was a faulty installation and should be corrected that the service entrance conductors must be aluminum, and report them as such that the service drop conductors must be aluminum, so the utility should be contacted that the house service must be 200A https://mynew.aolcc.ca/courses/6776/quizzes/28348?module_item_id=711845 14/29
11/21/23, 5:21 AM Test 1 - Service Drop & Service Entrance - Requires Respondus LockDown Browser: Electrical Inspection that this is a normal situation, and is acceptable : Please refer to Section 6.2. Question 25 111 pts Why are some main switches sealed by the utility? for safety to prevent air leakage to prevent tampering to prevent tapping of power prior to the meter all except (b) : Please refer to Section 6.2. Question 26 111 pts If the service entrance conduit is 2 inch, what conclusions can you draw as to the size of the electrical service? you would suspect a service greater than 100A, but would have to confirm elsewhere https://mynew.aolcc.ca/courses/6776/quizzes/28348?module_item_id=711845 156/29
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11/21/23, 5:21 AM Test 1 - Service Drop & Service Entrance - Requires Respondus LockDown Browser: Electrical Inspection the service is 200A the service is 100A the service is 400A the service conduit is oversized : Please refer to Section 6.2. Question 27 111 pts Knob and tube wiring was used commonly from 1920 to 1950 1850 to 1880 1950 to 1960 1940 to 1970 1890 to 1910 : Please refer to Section 2.2.3. Question 28 11/1 pts Assuming aluminum, standard wire type, and normal temperature, what is the typical conductor size (in AWG) for a 100A service? https://mynew.aolcc.ca/courses/6776/quizzes/28348?module_item_id=711845 16/29
11/21/23, 5:21 AM Test 1 - Service Drop & Service Entrance - Requires Respondus LockDown Browser: Electrical Inspection #10 #6 #4 #3 #H2 : Please refer to Section 6.1. Question 29 171 pts Which of the following is NOT a common service amperage? 60A 100A 175A 200A 400A : Please refer to Section 6.1. Incorrect | Question 30 0/1 ptS https://mynew.aolcc.ca/courses/6776/quizzes/28348?module_item_id=711845 17/29
11/21/23, 5:21 AM Test 1 - Service Drop & Service Entrance - Requires Respondus LockDown Browser: Electrical Inspection Assuming copper, standard wire type, and normal temperature rating, what is the typical conductor size (in AWG) for a 60A service? #10 #6 #4 #3 #2 : Please refer to Section 6.1. neerrect - Question 31 0/1 pts Which one of the following is a reliable indicator of service amperage? the size of the service drop wires the size of the service entrance conduit the rating of the meter the size of the service entrance conductors the rating of the distribution panel : Please refer to Section 6.2. https://mynew.aolcc.ca/courses/6776/quizzes/28348?module_item_id=711845 18/29
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11/21/23, 5:21 AM Test 1 - Service Drop & Service Entrance - Requires Respondus LockDown Browser: Electrical Inspection Question 32 171 pts The standard house voltage is 100A 120V 120/208V 120/240V 208V : Please refer to Section 3.0. neerrest - Question 33 0/1pts What are the | (current) and R (resistance) values for a circuit with four 60-watt light bulbs and a 360-watt television? |I=5A, R=600 ohms I=12A, R=72 ohms |I=24A, R=5 ohms |I=2.5A, R=48 ohms I=5A, R=24 ohms https://mynew.aolcc.ca/courses/6776/quizzes/28348?module_item_id=711845 19/29
11/21/23, 5:21 AM Test 1 - Service Drop & Service Entrance - Requires Respondus LockDown Browser: Electrical Inspection : Please refer to Section 3.0. Question 34 171 pts What is the frequency (cycles/second) of household electricity? 60Hz 50Hz 30Hz 66MHz 25Hz : Please refer to Section 3.0. Question 35 171 pts How much current does a 120V, 1200W hair dryer draw? 144kA 10A 144 A 10W https://mynew.aolcc.ca/courses/6776/quizzes/28348?module_item_id=711845 20/29
11/21/23, 5:21 AM Test 1 - Service Drop & Service Entrance - Requires Respondus LockDown Browser: Electrical Inspection 0.10A : Please refer to Section 3.0. neerrect Question 36 0/1 pts The top end of an SE cable service should be bent into a u-shaped drip loop before removing the cable sheathing should not be clamped within 36 inches of the top should have a gooseneck before the splice should be secured firmly to the gutter must be spliced to the service drop at least 3 feet from the side of the house : Please refer to Section 5.1.1. Question 37 111 pts If two 60W light bulb branch circuits are wired in parallel, and we add another parallel 60W light bulb branch circuit https://mynew.aolcc.ca/courses/6776/quizzes/28348?module_item_id=711845 21/29
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11/21/23, 5:21 AM Test 1 - Service Drop & Service Entrance - Requires Respondus LockDown Browser: Electrical Inspection each light will get dimmer the bulb closest to the voltage source will be brightest each bulb will have the same brightness the total current in the circuit stays the same the current in each branch will decrease : Please refer to Section 3.0. Question 38 171 pts Water stains on the soffit around the hole where the service mast passes through is most likely the result of improper flashing where the mast penetrates the roof a lack of a drip loop a lack of caulking between the soffit and the mast an undersized service mast a cracked masthead : Please refer to Section 5.1.9. Question 39 1/1 pts https://mynew.aolcc.ca/courses/6776/quizzes/28348?module_item_id=711845 22/29
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11/21/23, 5:21 AM Test 1 - Service Drop & Service Entrance - Requires Respondus LockDown Browser: Electrical Inspection An overcurrent protection device can be a fuse or breaker regulates voltage in a circuit usually indicates an obsolete panel refers to the plastic washers installed in fuse sockets protects a cable from mechanical damage : Please refer to Section 2.1. Question 40 1/1 pts The service drop wires are a reliable indicator of service size are usually the homeowner's responsibility connect to the house at the drip loop must always be in conduit cannot be supported by the neutral wire : Please refer to Section 4.0. https://mynew.aolcc.ca/courses/6776/quizzes/28348?module_item_id=711845 23/29
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11/21/23, 5:21 AM Test 1 - Service Drop & Service Entrance - Requires Respondus LockDown Browser: Electrical Inspection Question 41 171 pts Which of the following suggests an improperly supported service drop? rusting conduit water in the service panel no seal on meter missing drip loop PVC conduit bulging between the meter and the elbow at the base : Please refer to Section 4.2.6. Question 42 171 pts A service box with a black wire, a red wire, a white wire, and two 200A fuses indicates 120/240V, 400A service 120V, 400A service 120V, 200A service 120/240V, 200A service three-phase service https://mynew.aolcc.ca/courses/6776/quizzes/28348?module_item_id=711845 24/29
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11/21/23, 5:21 AM Test 1 - Service Drop & Service Entrance - Requires Respondus LockDown Browser: Electrical Inspection : Please refer to Section 6.2. Question 43 171 pts Common standards require the inspector to observe electrical meters measure the service voltage describe the location of the main disconnect observe the service laterals measure the service amperage : Please refer to Section 2.1. Question 44 171 pts If electricity costs $0.10 per kWh, how much does it cost to run a 120V whirlpool bath which draws 5A for 1/2 hour? ¢6 $6.00 ¢3 $3.00 https://mynew.aolcc.ca/courses/6776/quizzes/28348?module_item_id=711845 25/29
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11/21/23, 5:21 AM Test 1 - Service Drop & Service Entrance - Requires Respondus LockDown Browser: Electrical Inspection ¢30 : Please refer to Section 3.0. Question 45 111 pts With respect to electricity, rain water is an insulator a conductor no different than distilled water highly resistant similar to air : Please refer to Section 5.1.9. Incorrect Question 46 0/1 ptS You observe #6 gauge copper wires entering a service box with two 60A fuses inside. From the service box, #3 copper conductors lead to a newer combination panel that has a 100A main breaker. You should report the service size as 100A https://mynew.aolcc.ca/courses/6776/quizzes/28348?module_item_id=711845 26/29
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11/21/23, 5:21 AM Test 1 - Service Drop & Service Entrance - Requires Respondus LockDown Browser: Electrical Inspection 160A 60A dependent on the temperature rating of the #3 conductors 120A : Please refer to Section 6.1. Question 47 1/1 pts You notice a wooden post as the support for the service drop. You should recommend replacing it right away with a steel mast check for other amateur-like problems check for rot, damage or movement assume that you'll find obsolete equipment inside the house tug on the service drop wires to make sure the mast doesn't give : Please refer to Section 5.1.7. Question 48 11/1 pts Service entrance (SE) cables must be securely clamped to the house https://mynew.aolcc.ca/courses/6776/quizzes/28348?module_item_id=711845 27/29
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11/21/23, 5:21 AM Test 1 - Service Drop & Service Entrance - Requires Respondus LockDown Browser: Electrical Inspection every 6 inches using brass clamps and screws every 12 inches, using rustproof fasteners every 6 feet every 30 inches, generally : Please refer to Section 5.1.8. Question 49 1/1 pts Ohm's Law, the relationship between voltage, current, and resistance in a simple circuit, states : Please refer to Section 3.0. Question 50 1/1 pts https://mynew.aolcc.ca/courses/6776/quizzes/28348?module_item_id=711845 28/29
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11/21/23, 5:21 AM Test 1 - Service Drop & Service Entrance - Requires Respondus LockDown Browser: Electrical Inspection Following the grounded conductor from the service box toward the street, you would find that it connects to the ground rod for the house the utility's transformer the main water pipe the meter the grounding electrode : Please refer to Section 3.0. Quiz Score: 39 out of 50 https://mynew.aolcc.ca/courses/6776/quizzes/28348?module_item_id=711845 29/29
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