Master Electrician Practice Test

Take this free practice test of typical questions that may be encountered on most Master Electrician’s licensing exams.

The subject matter covered in most electrical licensing examinations is: Grounding and bonding, Overcurrent protection, Wiring methods and installation, Boxes and fittings, Services and equipment, Motors, Special occupancies, Load calculations, Lighting, Appliances, Box and raceway fill, Hazardous locations, Trade knowledge and Electrical theory.

For complete practice, try the Master Electrican Practice Exam Kit with 300 questions and fully explained answers.

1. The optional method of calculation for dwelling units is reserved for ___.
2. When calculating the service-entrance conductors of a farm where all the buildings, including the dwelling, are supplied from a common service, the second largest individual load in the group shall be calculated at _____.
3. The entire area of a service pit located in a commercial major repair garage that is not provided with mechanical ventilation is classified as a _____ location.
4. The MAXIMUM distance conduit seals are permitted to be installed from an enclosure that houses devices that produces arcs or high-temperatures in a Class I, Division 1 location is _____.
5. Where three (3) switches are grouped or ganged in an outlet box without permanent barriers, the voltage between the adjacent switches shall NOT exceed _____.
CDA Practice Test
6. In order to determine the adequate size of a junction box containing size 4 AWG THWN copper conductors, the volume allowance, in cubic inches, required per conductor is _____.
7. You are to install an underground run of trade size 2 in. Schedule 40 PVC conduit containing 120/240-volt, single-phase service-entrance conductors supplying a one-family dwelling. The PVC will not cross under any public streets, roads, driveways or alleys. The conduit is to have a burial depth of at LEAST _____ from final grade.
8. Where an eye-bolt is provided as a means of attachment of 120/240-volt, single-phase residential service-drop conductors, in no case shall this point of attachment be less than _____ above finished grade.
9. You are to install four (4) size 350 kcmil THWN copper conductors in a run of rigid metal conduit (RMC). What is the MINIMUM trade size RMC required to enclose the conductors for this installation?
10. Where size 2 AWG THWN/THHN copper conductors, protected by a 100 ampere rated circuit breaker, are enclosed in a Schedule 40 PVC conduit to supply an air-conditioning unit, what is the MINIMUM size copper equipment grounding conductor required for this installation?
11. Potential transformers measure _______________.
12. A first aid kit should be provided for what jobs?