AZ ROC R-11 Electrical case studies
AZ ROC R-11 Electrical · Put your knowledge to work in context.
The Arizona Registrar of Contractors (AZ ROC) issues contractor licenses by classification, and the R-11 Electrical classification is the electrical trade credential within that system. AZ ROC - established in 1931 - licenses and regulates residential and commercial contractors, and licensing is tied to qualifying through examinations plus experience requirements. The AZ ROC R-11 Electrical case studies are 5 cases and about 4,269 words.
1Restaurant Tenant Addition: Can the Existing 200 A Service Carry It?
A tenant improvement adds cooking equipment to a 1,400 sq ft restaurant served by an existing 120/208 V, 3-phase, 4-wire, 200 A service. The designer's existing calculated demand load is 118 A.
850 words, about 4 min2Detached Shop Feeder: Conductor Size, Grounding, and Load
A homeowner wants a 100 A subpanel in a detached 30 × 40 ft shop about 165 ft from the house. The house has a 200 A, 120/240 V single-phase service with an exterior main panel.
865 words, about 4 min3Pump Motor Trips Overload: Diagnosis Before You Touch the Heaters
A 480 V, 3-phase, 30 hp sewage pump motor trips its Class 10 overload relay after 25 to 40 minutes of run time. Nameplate: 34.0 A, service factor 1.15, 40 °C ambient, insulation class F.
823 words, about 4 min4Service Replacement: Electrode Changes, Gas Bonding, and a Subpanel Wiring Shortcut
You are replacing a 200 A, 120/240 V residential service. Service-entrance conductors are 2/0 copper.
848 words, about 4 min5Retail Rewire Bid: Labor Unit Takeoff, Unlicensed Help, and a Permit Problem
You are the qualifying party for an R-11 electrical contractor bidding a 22,000 sq ft retail shell rewire: 140 duplex receptacles at 12 minutes each, 90 recessed LED fixtures at 18 minutes each, 2,600 ft of 3/4 in. EMT at 6.5 minutes per foot, and 2,600 ft of 12 AWG THHN at 1.8 minutes per foot.
883 words, about 4 min