 Important Note for All Exam Candidates. As of January 1, 2009, all National Certification examinations that reference the National Electrical Code will be updated to the 2008 edition of the NEC. |
| Exam ID: E3 |
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- 70 multiple-choice questions
- 3½-hour limit
- Open book
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| Sample Examination Questions: The
sample questions are provided to give you an idea of the
style and format of examination questions. The questions
are not intended to represent content, references or questions
that will be on the examination. They are not intended
nor should they be referenced/used as a study tool for
the examination. |
| 1. |
In an equipment room that houses a 1,000
volt switchboard, what is the MINIMUM ceiling height of
the equipment room? Click for Answer |
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A. |
6 feet |
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B. |
6 feet, 6 inches |
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C. |
7 feet, 6 inches |
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D. |
8 feet |
| 2. |
Service raceways running under a five inch
concrete slab of a building are: Click for Answer |
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A. |
prohibited. |
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B. |
limited to 10 feet in length. |
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C. |
considered to be outside of the building. |
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D. |
required to be in schedule 80 rigid non-metallic
conduit.
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| 3. |
A transformer is permitted to be installed
in a suspended ceiling space where it is not readily accessible
if the voltage is less than 600 volts and it has a maximum
rating of _____ kVA. Click for Answer |
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A. |
10 |
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B. |
25 |
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C. |
50 |
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D. |
112½ |
| 4. |
What minimum size copper equipment bonding
jumper on the supply side is required for 2,000 kcmil
copper service entrance conductor? Click for Answer |
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A. |
2/0 |
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B. |
3/0 |
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C. |
250 kcmil |
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D. |
2,000 kcmil |
| 5. |
For emergency system equipment, all of the
following are correct code requirements, EXCEPT: Click for Answer |
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A. |
It shall be suitable for the maximum available
fault current at the transfer equipment terminals. |
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B. |
It shall have adequate capacity for all
loads to be operated simultaneously. |
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C. |
It shall indicate a ground fault by an audible
and visual signal where practicable. |
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D. |
It shall be capable of supplying the full
load for at least three hours where the emergency power
is supplied by a generator. |
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