AR Electrician case studies

AR Electrician · Put your knowledge to work in context.

The Arkansas Electrician Licensing Examination is the credentialing exam that the Arkansas Board of Electrical Examiners uses to qualify candidates for journeyman and master electrician licensure in the state. It is intended for electricians who have already accumulated the supervised field experience the Board requires and who now need to demonstrate that they can apply the National Electrical Code accurately and quickly enough to work unsupervised or to supervise others. The AR Electrician case studies are 5 cases and about 4,493 words.

Adding a 48 A EVSE to an Existing 200 A Dwelling Service

A 2,150 sq ft single-family dwelling has a 240/120 V, single-phase 200 A overhead service with a 200 A panelboard and a 200 A main breaker. Existing major loads are a 4.5 kW water heater, a 3-ton air conditioner with 10 kW of electric strip auxiliary heat, a 12 kW range, and a 5.5 kW dryer.

867 words, about 4 min 2

Detached Garage Feeder: Electrodes, Neutrals, and a Neutral-to-Ground Connection

A dwelling with a 200 A service is fed by a 60 A feeder to a detached, unheated garage 75 ft away. The feeder is 6 AWG copper THWN (two ungrounded, one neutral, one equipment grounding conductor) in 1-1/4 in.

950 words, about 5 min 3

Rooftop Unit: Nameplate MCA/MOP Versus Field Conditions

A 208 V, three-phase packaged rooftop unit with hermetic refrigerant compressors has a nameplate listing minimum circuit ampacity (MCA) 42 A, maximum overcurrent protective device (MOP) 60 A, and rated-load current 38 A. It replaces an older unit of similar size.

1,017 words, about 5 min 4

Multiwire Branch Circuits in a Crowded Ceiling Run

A retail tenant space is fed from a 208Y/120 V, three-phase, four-wire panelboard. Two three-phase, four-wire multiwire branch circuits (six ungrounded conductors and two neutral conductors) plus one equipment grounding conductor are to be installed in a single run of 1 in.

769 words, about 4 min 5

Backfeeding a 10 kW PV System Into a 200 A Panel

An owner is adding a 10 kW ac rooftop PV system to an existing dwelling. The inverter is a 240 V, single-phase, non-islanding unit with a continuous rated output current of 40 A.

890 words, about 4 min