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408.4
Circuit Directory or Circuit Identification
What's
Wrong
Here?
Code Q&A
Code Quiz
Electric West
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Top 50 NEC Rules
408.4
Circuit Directory or Circuit Identification
By Mike Holt
All circuits and circuit modifications must be legibly
identified as to their clear, evident, and specific purpose. The
identification must include sufficient detail to allow each circuit to
be distinguished from all others, and the identification must be on a
circuit directory located on the face or inside of the door of a
panelboard.
Editor's note: This information was extracted from Mike
Holt's
textbook, Understanding
the National Electrical Code
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Code Challenge
What's Wrong
Here?
By Joe Tedesco
Think you know how this installation violates the
NEC?
Visit EC&M's
Web site to see the answer.
Hint: Low rent, no heat
Code Q&A
By Mike Holt
Q. Is there any allowance in the NEC to locate
receptacles in dwelling units where it is convenient for furniture
layout or the designer's wishes, if the required number of receptacles
is installed?
Visit EC&M's Web
site to see the answer.
Code Quiz
By Steven Owen
Q. For a 20A, 125V, single-phase receptacle that
supplies power to a cord-and-plug connected metering pump, which is
integral to a continuous industrial process that cannot tolerate an
unexpected loss of power, installed outdoors in an industrial facility,
the 20A receptacle __________. Note that qualified personnel maintain
this industrial facility and an assured equipment grounding conductor
program is in place.
- has no special requirements in this example.
- must have a weatherproof cover per 406.8(B)(1) only.
- must have a weatherproof cover per 406.8(B)(1) and have GFCI
protection.
- must have a weatherproof cover per 406.8(B)(1), however, it does
not
have to have GFCI protection.
Visit EC&M's
Web site for the answer and explanation.
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For 2008, the Power
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