210 notes exam questions with correct
answers
circuit breakers and fuses. - Answers-the two most common types of overcurrent
protective devices are
Circuit breakers - Answers-are grouped for identification according to given current
ranges.
handle - Answers-the normal current rating of a circuit breaker is located on the
CSA and UL - Answers-are the organization(s) that test and list circuit breakers
10,000A - Answers-In residential applications, the available ground fault circuit current
is seldom higher than
The color black - Answers-is printed on the labels of standard interrupting capacity
circuit breakers.
65,000A. - Answers-The interrupting rating of an FH-type circuit breaker is
A current-limiting circuit breaker - Answers-performs in a manner similar to conventional
thermomagnetic circuit
breakers at currents below a threshold of about 1,000A.
NEC Article 240 - Answers-covers overcurrent protection.
Class A - Answers-is defined by UL as a device that trips when a fault current to ground
is 6mA or more.
Nonfeed-through GFCI receptacle - Answers-offers protection only at the point of
installation
they have a high speed of response to overcurrents. - Answers-Single-element fuses
particularly suited for the protection of circuit breakers with low interrupting
ratings because
Cartridge fuses - Answers-used for branch circuit protection must be marked with the
ampere rating, voltage
rating, and the interrupting rating.
Single-line schematic drawings - Answers-helps when sizing fuses for a given
application.
answers
circuit breakers and fuses. - Answers-the two most common types of overcurrent
protective devices are
Circuit breakers - Answers-are grouped for identification according to given current
ranges.
handle - Answers-the normal current rating of a circuit breaker is located on the
CSA and UL - Answers-are the organization(s) that test and list circuit breakers
10,000A - Answers-In residential applications, the available ground fault circuit current
is seldom higher than
The color black - Answers-is printed on the labels of standard interrupting capacity
circuit breakers.
65,000A. - Answers-The interrupting rating of an FH-type circuit breaker is
A current-limiting circuit breaker - Answers-performs in a manner similar to conventional
thermomagnetic circuit
breakers at currents below a threshold of about 1,000A.
NEC Article 240 - Answers-covers overcurrent protection.
Class A - Answers-is defined by UL as a device that trips when a fault current to ground
is 6mA or more.
Nonfeed-through GFCI receptacle - Answers-offers protection only at the point of
installation
they have a high speed of response to overcurrents. - Answers-Single-element fuses
particularly suited for the protection of circuit breakers with low interrupting
ratings because
Cartridge fuses - Answers-used for branch circuit protection must be marked with the
ampere rating, voltage
rating, and the interrupting rating.
Single-line schematic drawings - Answers-helps when sizing fuses for a given
application.
