ELEC 121 Elec Residential Look-up Activity
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University of California, Merced *
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111
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Electrical Engineering
Date
Jan 9, 2024
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Uploaded by pedroojedav
San Joaquin Valley College
ELEC 121 Elec Residential Look-up Activity
Pedro V. Ojeda
Overview
It will take a while to memorize the most commonly used sections of the NEC. Until then, being able to quickly look-up code references will be a skill nearly as useful as having the code memorized.
For each of the questions below, write the code section that contains the answer, and provide a summary of the code’s requirements.
Questions
1.
In most living spaces in a dwelling, what is the maximum distance between wall receptacles?
One family and two family dwellings: For a one family dwelling and each unit of a two family dwelling that is at a grade level, at least one receptacle outlet readily accessible from grade and not more than 2.0 m ( 6 ½) above grade level shall be installed at the front and back of the dwelling.
210.52 (E) (1) 2.
When boring holes through joists or other wood members to run cable
or raceways, how far from the edge of the wood member must the hole be?
Bored holes: In both exposed and concealed locations, where a cable or raceway type wiring method is installed through bored holes in joist, rafters, or wood members, holes shall be bored so that the edge the hole is not less than 32 mm (1 ¼ in).
300.4 (A) (1)
3.
Herb has an attic space he uses for storage. Is it required to include a
switched lighting outlet?
All occupancies: For attics and underfloor space, utility rooms, NEC Elec Residential Look-up Activity
ELEC 121
Revised: 10.21 jh
Academic Affairs Department
San Joaquin Valley College
ELEC 121 Elec Residential Look-up Activity
and basements at least one lighting outlet containing a switch or controlled by a wall switch or listed wall- mounted control device shall be installed where there are used for storage or contain equipment requiring service.
210.70 (C)
4.
Do receptacles installed outdoors need to have a weatherproof cover if it is already protected by the building’s roof?
Damp locations: A receptacle installed outdoors in a location protected from the weather or in other damp locations shall have an enclosure for the receptacle that is weatherproof when the receptacle is covered (attachment plug cap not inserted and receptacle covers closed).
406.9 (A)
5.
An old house has stairs leading to a basement. The good news: there’s a luminaire installed to light the stairwell. The bad news: there’s only one switch controlling the luminaire. Which code does this violate?
This violates code 210.70 (A) (4).
6.
Most homes these days are built with exterior lighting illuminating the garage door. What section of the NEC indicates that garage vehicle doors shall be illuminated?
Code 210.70 (A) (2)
NEC Elec Residential Look-up Activity
ELEC 121
Revised: 10.21 jh
Academic Affairs Department
San Joaquin Valley College
ELEC 121 Elec Residential Look-up Activity
7.
Dwayne built a three car-sized detached garage on his property to house his family’s two vehicles and a small woodworking shop. What is the minimum number of receptacle outlets he is required to install in the garage?
Garages: In each attached garage and in each detached garage with electric power, at least one receptacle outlet shall be installed in each vehicle bay and not more than 1.7 m (5 ½ ft) above the floor.
210.52 (G) (1)
8.
What is the maximum heights off a countertop can a receptacle be installed?
Receptacle outlets shall be located in one of the following: On or above but not more than 500 mm (20 in) above, the countertop or
work surface. Not more than 300 mm (12 in) below the countertop or work surface.
210.52 (C) (3)
Submission
Submit this completed assignment to the appropriate dropbox.
NEC Elec Residential Look-up Activity
ELEC 121
Revised: 10.21 jh
Academic Affairs Department
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