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All the question's and answer's in this quiz are found in Tom Henry's book, "Calculations II Workbook".
1. A GFCI in a dwelling will trip if the current on the hot or ungrounded conductor and the current on the grounded conductor varies by milliamperes.
- [ ] 1 to 2
- [ ] 8 to 12
- [ ] 2.5 to 3
- [ ] 4 to 6
2. A mobile home park has 25 mobile home sites which would require a minimum demand of kva.
- [ ] 50
- [ ] 100
- [ ] 65
- [ ] 96
3. Ampacity correction is required for the current-carrying conductors in the multiconductor cable of a cable tray when there are more than current -carrying conductors in the cable.
- [ ] 30
- [ ] 3
- [ ] 2
- [ ] 24
4. How many 20 amp, 120 volt, 2-wire circuits are needed for a 40,000 sq.ft. office building with an unknown receptacle load?
- [ ] 120
- [ ] 60
- [ ] 90
- [ ] 40
5. The ampacity of a 2" round bus bar is approximately amperes.
- [ ] 1741
- [ ] 3572
- [ ] 3142
- [ ] 2836
6. All of the following types of conductor insulation are allowable for use in wet locations except .
- [ ] XHHW
- [ ] THWN
- [ ] THHN
- [ ] THW
7. Where shall mobile home service equipment be located?
- [ ] Within sight and not more than 50' from the mobile home served
- [ ] On the mobile home without permission of the authority having jurisdiction
- [ ] In a mobile home without permission of the authority having jurisdiction
- [ ] Adjacent to the mobile home being served
8. What is the MINIMUM depth for direct burial of 24 volt Type UF landscape lighting cable?
- [ ] 6"
- [ ] 12"
- [ ] 18"
- [ ] 24"
9. Type USE-2 is rated at .
- [ ] 90 C
- [ ] 75 C
- [ ] 60 C
- [ ] 86 F
10. What size service lateral conductors are required for a 120/240 volt 150 amp single phase dwelling service using copper-clad aluminum THWN conductors?
- [ ] #1/0
- [ ] #3/0
- [ ] #1
- [ ] #2/0
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