Electrician's Exam - CH01

“Concealed” as applied to electrical wiring means:

• Rendered inaccessible by the structure or finish of the building

• Capable of being reached quickly

• Capable of being removed without damage

• Admitting close approach

A feeder is:

• A circuit conductor between the final overcurrent device protecting the circuit and the outlet

• A branch circuit that supplies several outlets

• All circuit conductors between the service equipment, the source of a separately derived system, or other power supply source and the final branch-circuit overcurrent device

• A device for generating electricity

A bonding conductor or jumper is:

• A branch circuit that supplies only one utilization equipment

• A reliable conductor to ensure the required electrical conductivity between metal parts required to be electrically connected

• An adhesive used to insulate conductors

• Capable of being operated without exposing operator to contact with live parts

In locations where electric equipment would be exposed to physical damage, the following must be provided:

• Warning signs

• Working space

• Sufficient headroom

• Enclosures or guards

To provide access to the working space about electric equipment, the following number of entrances of sufficient size must be provided:

• 3

• 2

• 1

• 4

Externally operable means:

• Capable of being operated from the outside of a building

• An apparatus enclosed in a case

• Capable of being operated without exposing the operator to contact with live parts

• Surrounded by a case

What must be provided for in all working spaces above service equipment?

• A water faucet to flush operator’s eyes

• A drinking fountain

• Illumination

• A wash basin

Parts of electric equipment which in ordinary operation produce arcs, sparks, flames, or molten metal shall be enclosed or separated and isolated from:

• All other electrical equipment

• All combustible material

• Electric lighting

• All working spaces

Working space in rooms containing electrical equipment shall not be used for:

• Storage

• Maintenance and repair of equipment

• Testing purposes

• Inspection or servicing

In all cases where there are live parts normally exposed on the front of switchboards or motor control centers, the working space in front of such equipment shall not be less than:

• 1 foot

• 3 feet

• 4 feet unless adequate protection is provided

• 18 inches