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Question 1 of 20
1. Question
For a single-phase 240V residential service, what is the minimum size of the grounding electrode conductor (GEC) for a service with 3/0 AWG copper ungrounded conductors?
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Question 2 of 20
2. Question
What is the secondary voltage of a transformer that has a 4:1 turn ratio and a primary voltage of 480?
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Question 3 of 20
3. Question
What is the demand factor for 18 shore power receptacles?
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Question 4 of 20
4. Question
What is the Voltage drop of a 200 amp circuit using 4/0 copper conductors that is 225 ft long on a 120/240 system?
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Question 5 of 20
5. Question
What is the allowable ampacity of a #10 THWN-2 copper conductor in an area with an ambient temperature of 114°F in a conduit with 4 current carrying conductors?
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Question 6 of 20
6. Question
How many #8 conductors can you fit into a 4 x 1 1/4 round/octagonal box?
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Question 7 of 20
7. Question
What is the total cubic fill you would calculate for 5 #12 conductors and 6 #10 conductors?
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Question 8 of 20
8. Question
What is the voltage across an open switch when the voltage supplying the switch is 120v?
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Question 9 of 20
9. Question
What size copper conductor would you select for 4 motors with FLC’s of 22 amps, 20 amps, 14 amps, and 10 amps terminating to 75 C terminals?
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Question 10 of 20
10. Question
What size copper conductors would you select for a single phase motor with a nameplate rating of 26 amps that will run a draw bridge for only 5 mins at a time and terminating to 60 C lugs?
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Question 11 of 20
11. Question
Bundling adjustment factors do not do need to be considered when nipples are _____ inches or less.
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Question 12 of 20
12. Question
What is the total resistance of this parallel circuit?
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Question 13 of 20
13. Question
Cable trays containing conductors rated over 600 V shall have permanent, legible warnings stating _____.
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Question 14 of 20
14. Question
Outdoor overhead conductors over _____ volts shall be permitted only for systems rated over ______ volts.
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Question 15 of 20
15. Question
6 inch PVC must be supported at a minimum of every __________ Ft.
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Question 16 of 20
16. Question
All receptacles within ____________ ft of a pool or spa must be GFCI protected.
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Question 17 of 20
17. Question
Cord and plug connected office luminaries must not exceed ___________ ft in length.
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Question 18 of 20
18. Question
For sign ballasts, secondary-circuit voltages shall not exceed _______________ volts.
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Question 19 of 20
19. Question
What is the total calculated load for eight 5,000 watt dryers using the standard method?
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Question 20 of 20
20. Question
What is the total calculated demand for one 10.5 Kw range?
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