Chapter 1,3 and 6 residential wiring
minimum number of lighting branch circuits formulas
(3 volt- amperes x square ft)/ 120
30 amperes
10 awg copper conductor
20 amperes
12 AWG copper conductor
15 amperes
14 awg copper conductor
For HVAC equipment, receptacles must be within
25 ft
sliding glass doors on a wall must not be placed no more than
6 ft from a receptacle
Hallways 10 ft or longer in homes
must always have at least one receptacle
stairway lighting
must be provided on each floor
any wall space 24 inches or more
must have a receptacle
walking surface for receptacles
must not be more than 6.5 feet
laundries must have at least
one receptacle
Outdoors
one receptacle is required in the front and the other in the back
voltage
pushes the current
osha 1910.399 considers a qualified person as
someone who is familiar with construction and operation of the machine
branch circuit conductors
the circuit conductors between the final over-current device and the outlets
the purpose of the electrical code
the practical safeguarding of persons and property from hazards arising from the use of electricity
If detached garage has electrical power
all receptacles must be GFCI
continuous load
a load where the maximum current is expected to run for three hours or more
habitable room
a room in a residential occupancy for living, eating and sleeping
feeder
all circuit conductors between the service equipment, the source of a separately derived system, or other power supply source and the final branch circuit
harmful component of an electrical circuit
current
ampere rating
determines the rating of the circuit branch
detached garage is not required to have
electrical power
derating factor
if more than three current carrying conductors are installed in a single raceway
non habitable room
intended for mainly storage