Licensed Electrical Inspector (LEI) G Class Theory case studies
Licensed Electrical Inspector (LEI) G Class Theory · Put your knowledge to work in context.
The Licensed Electrical Inspector (LEI) G Class Theory credential is a professional certification for electricians, engineers, and code officials who inspect electrical installations for compliance with adopted codes and standards. It signals that the holder understands the principles behind inspection decisions, not just memorized rules. The Licensed Electrical Inspector (LEI) G Class Theory case studies are 5 cases and about 1,978 words.
1Voltage Drop on a Long Barn Feeder
A farm owner wants to feed a 240 V single-phase subpanel in a detached barn from the service panel at the house. The run is 95 m of 3-conductor copper cable in a buried conduit, and the calculated load at the barn is 60 A continuous.
467 words, about 2 min2Bonding a Metal Water Line with Mixed Materials
During a rough-in inspection of a single-family house, you find the 200 A service panel bonded to the metal water service pipe with a 6 mm² copper conductor clamped to the pipe about 1 m from where it enters the foundation. The interior plumbing has been partly replaced: copper near the entry, then a section of PEX, then copper again at the fixtures.
373 words, about 2 min3Overcurrent Device in a Panel with a Backfed Breaker
A residential rooftop solar array feeds a 7.6 kW inverter into a 200 A main panel. The installer lands the inverter output on a 40 A two-pole breaker in the panel and installs the required dedicated disconnect at the meter.
371 words, about 2 min4Unpermitted Basement Finish with New Circuits
A homeowner calls for a final inspection on a basement finish that was done without a permit. The work includes six new receptacles, four recessed lights on a new 15 A circuit, a new 20 A circuit for a bathroom fan, and a relocated laundry receptacle.
373 words, about 2 min5Inspector Conflict of Interest on a Repeat Contractor
You are assigned to inspect a commercial tenant improvement for a contractor you have cited three times in the past year for inadequate box fill and missing support clamps. On arrival, the job superintendent offers you lunch and mentions that the contractor is a major donor to the local trade association that sponsors your department's training.
394 words, about 2 min