Electrical Wiring AC Circuits Quiz

What is the purpose of the National Electrical Code (NEC)?

• To regulate the use of electricity in homes

• To provide guidelines for electrical installations

• To certify electricians

• To standardize electrical components

Where does the power from the supplier enter the building?

• Circuit breaker box

• Direct connection to ground

• Main switch

• Service meter

What is the purpose of a service disconnect?

• To disconnect power

• To connect to ground

• To protect from moisture

• To measure energy usage

What is the function of a breaker box?

• To measure energy usage

• To disconnect power

• To control branch circuits

• To connect to ground

What is the purpose of a parallel circuit?

• To wire each load separately

• To arrange multiple loads in a line

• To continue the flow of the circuit if a load fails

• To ensure all loads fail if one load fails

What is the American Wire Gauge (AWG) system used for?

• To connect to ground

• To size wire conductors

• To measure energy usage

• To control branch circuits

What is the purpose of Romex wiring?

• To provide a protected path for conductors

• To enclose conductors within the structure

• To be used in residential applications

• To protect supply cables from moisture

What is the function of a junction box?

• To measure energy usage

• To enclose wires and their connections

• To house switches and outlets

• To protect connections between electrical wires

What is the purpose of a GFCI receptacle?

• To measure current flow and trip the circuit if a short has occurred

• To provide a means of connecting to or disconnecting a load

• To handle high amperages

• To break the circuit before electricity reaches the load

What is the function of a single-pole single-throw (SPST) switch?

• To break the circuit leading to a load

• To be used in 240 V circuits

• To operate two side-by-side switches within the same device

• To control from two locations