Article 210
This article covers what type of circuits?
Branch Circuits
Which article covers grounding and bonding?
Article 250
What article covers electrical services?
Article 230
Which article contains conductor ampacity tables?
Article 310
Generally, how often is the NEC revised?
Every 3 years
Which receptacles in dwelling bathrooms require GFCI protection?
All 125V though 250V receptacles
What color identifies an equipment grounding conductor?
Green or bare
Where is the service disconnect required to be located?
Readily accessible and nearest the point of entrance of the service conductors.
What is the ampacity of #12 copper THHN at the 90 degree column?
30 Amps
What do the letters "NEC" stand for?
National Electrical Code
What is the maximum breaker size protecting #12 copper conductors under normal conditions?
20 amps
What is the purpose of bonding?
To establish an effective fault-current path.
What is the purpose of a service disconnect?
To disconnect all power to the building
Why can't you always use the 90 degree ampacity?
Because equipment termination temperature ratings often limit the allowable ampacity.
Who publishes the NEC?
The National Fire Protection Association (NFPA)
How many small-appliance branch circuts are required in a dwelling kitchen?
Two 20amp circuits
Name two acceptable grounding electrodes.
Ground rod, Concrete-encased electrode (Ufer), Building steel, Metal underground water pipe
True or False:
The grounded (neutral) conductor may be disconnected before the undergrounded conductors.
False
What happens to conductor ampacity when more than three current-carrying conductors are installed in the same raceway?
It must be derated.
What chapter contains wiring methods?
Chapter 3
Name three locations requiring GFCI protection in a dwelling
Bathrooms, Kitchens, Garages, Outdoors, Crawl spaces, Basements, Laundry areas
What is the minimum lenght of a ground rod driven into the earth?
8 Feet
How many service disconnects are generally permitted for each service?
One, unless otherwise permitted by the NEC.
Name two factors that affect conductor ampacity.
Ambient Temp, Number of current-carrying conductors, Insulation Type, Conductor material (copper/aluminum)
Name all nine chapters of the NEC
1 General, 2 Wiring and Protection, 3 Wiring Methods and Materials, 4 Equipment for General Use, 5 Special Occupancies, 6 Special Equipment, 7 Special Conditions, 8 Communications Systems, 9 Tables