1
In residential applications, the available ground fault circuit current is seldom higher than...
10,000A
Circuit breakers are grouped according to..
given current ranges
Time current relationship of overcurrent devices
coordination
Cartridge fuses must be marked with amp rating, voltage rating and
interrupting rating
NEC 240 covers
overcurrent protection
This helps when sizing fuses
single-line schematic
Who test and list circuit breakers?
CSA and UL
Two most common types of overcurrent protection
breakers and fuses
circuit breaker rating is located ..
on the handle
Why are single element fuses particularly suited for the protection of circuit breakers with low interrupting ratings?
High speed of response to overcurrents
trips when fault to ground current is 6mA or more
Class A
current limiting circuit breakers perform below a threshold of...
1,000A
Nonfeed through GFCI only protects...
At the point of installation
Color of the labels on standard interrupting capacity circuit breakers
black
Interrupting rating of FH-Type breaker
65,000A