Code Quiz of Day

A daily challenge on the requirements outlined in the National Electrical Code

Highlights

How Many Supplies are Allowed?

June 23, 2015
A building or structure shall be supplied by a maximum of _____ feeder(s) or branch circuit(s), unless specifically permitted otherwise.

Minimum Conductor Size for Equipment Operating at Less than 50V

June 22, 2015
Conductors for an appliance circuit supplying more than one appliance or appliance receptacle in an installation operating at less than 50V shall not be smaller than _____ AWG...

Mounting Height Requirement for EV Coupler

June 19, 2015
Unless specifically listed and marked for the location, the _____ of electric vehicle supply equipment shall be stored or located at a height of not less than 24 in. above the...

Protecting Cellular Metal Floor Raceways

June 18, 2015
Inserts for cellular metal floor raceways shall be leveled to the floor grade and sealed against the entrance of _____.

Working Space Requirements for Electric Sign Equipment

June 17, 2015
A working space not less than 3 ft high by 3 ft wide by ______ deep is required for each ballast, transformer, electronic power supply, and Class 2 power source where not installed...

Fulfilling Conductor Fill Requirements

June 10, 2015
When counting the number of conductors in a box, a conductor running through the box with an unbroken loop or coil not less than twice the minimum length required for free conductors...

Guarding of Live Parts

June 9, 2015
Entrances to rooms and other guarded locations containing exposed live parts shall be marked with conspicuous ______ forbidding unqualified persons to enter.

Identification of Grounded Conductor

June 8, 2015
Grounded conductors ______ and larger can be identified by distinctive white or gray markings at their terminations.

Attachment Height of Overhead Service Conductors

June 5, 2015
The minimum point of attachment of overhead service conductors to a building shall not be less than ______ above finished grade.