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NCCER Electrical Level 2 module 3 Questions and ANswers
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NCCER Electrical Level 2 module 3 Questions and ANswers Through a prism - ANS A total of six colors(violet blue green yellow orange red) are visible when passing white light Standard incandescent light - ANS when a filament operates hotter, its life is shortened, making it a trade-off bet...

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  • August 28, 2024
  • 6
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • nccer electrical level 2 module 3

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  • NCCER Electrical

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NCCER Electrical Level 2 module 3
Through a prism - ANS A total of six colors(violet blue green yellow orange red) are
visible when passing white light

Standard incandescent light - ANS when a filament operates hotter, its life is
shortened, making it a trade-off between efficiency and lamp life.

Tungsten Halogen Incandescent Lamps - ANS The Halogen gas in the lamp accounts




A
for the longer life and excellent lumen maintenance




VI
Bi-pin base - ANS Both pre-heat and rapid start Lamps have 2 -pin base at each end.

Single pin - ANS Instant start Lamps have single pin at each end of the lamp




TU
Metal Halide Lamps - ANS Are the most energy-efficient source of white light. They
have high efficiency (80 to 115 LPW), excellent color rendition, long service life (10,000
to more than 20,000 average hours), and good lumen maintenance
IS
NEC Section 410.130(F)(5) - ANS All metal halide Lamps except thick-glass PARs
must have a containment barrier (lens) or Type O with protected socket.
OM

Color Temp 3000k and lower - ANS Warm in tone and slightly enhanced red and
yellows(Halogen Lamps)

Color Temp 3500k - ANS Moderate tone, producing a balance of warmth and
NA


coolness.(metal Halide Lamps)

Color Temp 4100k and higher - ANS Cool in tone, slightly biased toward blues and
greens. (Fluorescent Lamps)
JP




Color Temp 5000k - ANS Daylight simulating fluorescent lamps

Instant start lamp electrodes - ANS Not preheated. The ballast provide a high voltage
(100v to 1000v) across the electrodes that causes electrons to be emitted from the
electrodes.

Electronic instant-start ballast - ANS Lowest system wattage and highest system
efficiency. The lamp life is slightly shorter than with rapid-start ballast.

, Constant Wattage Auto transform ballast - ANS An HID type ballast with a circuit that
uses magnetic saturation to maintain better lamp wattage regulation and improved dip
tolerance. Used mainly with mercury and high pressure sodium lamps

Incandescent recessed lighting fixtures - ANS Generate a considerable amount of
heat within their enclosure and are a definite fire hazard if not properly installed

Suspended lighting fixture - ANS Are hung from the ceiling using a chain, aircraft wire,
cord, or metal stem. included in this group are chandeliers and pendant units




A
NEC article 410 - ANS sets forth most of requirements pertaining to the installation of




VI
lighting fixtures.

NEC article 411 - ANS Covers lighting systems of 30v or less




TU
NEC Section 314.27(A)(2) - ANS Covers lighting mounting lighting fixtures that weigh
more than 50lbs. Fixture must be supported independently of the box or mounted to a
listed outlet box designed and marked to support the fixture.
IS
NEC article 410 - ANS Covers the requirements of installing recessed light fixtures
which generate a considerable amount of heat.
OM

NEC Section 410.117(C) - ANS Junction box must be at least one foot from the
fixture. Fixture whip must be at least 18 inches but no more than 6 feet of suitable
raceway, with conductors having insulation suitable for the temperatures encountered.
NA


NEC Section 410.151-410.155 - ANS Covers the installation for track lighting.

Wall mounted track - ANS When installed the track must be at least 5' above the
finished floor, except where protected from physical damage or when using low voltage
(less than 30v rms) track
JP




Photosensors - ANS When used outdoors should be aimed due north. Time clocks
are often used in conjunction with photosensors in order to turn off lighting when there is
no longer a need for it.

Light impulses are transferred from I to the brain by the part of I called the____ - ANS
Optic Nerve

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