Exam E2

Commercial Electrical Inspector

Inspecting commercial electrical installations: services, feeders, branch circuits, equipment, special occupancies and special systems.

Questions: 80
Time limit: 210 min
Per question: 158 sec
Book: Open

Where the marks sit

Branch Circuit and Feeder Requirements carries 19 percent on its own. Study time should follow this, not the order of the chapters.

03 Branch Circuit and Feeder Requirements19%

04 Wiring Methods and Distribution Systems19%

02 Services17%

05 General Use Equipment12%

01 General Requirements10%

06 Special Occupancies9%

07 Special Equipment7%

08 Special Systems7%

Transcribed from ICC's published E2 content outline. Areas sum to 100 percent.

Full topic breakdown

Area	Topic	Weight
0101	Project Administration and Legal	3%
0102	Public Information	2%
0103	Conductors	5%
0201	Service Size, Rating, and Installations	8%
0202	Service and Feeder Grounding and Bonding	9%
0301	Branch Circuit and Feeder Installation	5%
0302	Branch Circuit and Feeder Calculations	4%
0303	Branch Circuit Ratings and Overcurrent Protection	5%
0304	Equipment Grounding and Bonding	5%
0401	Branch Circuit Required Outlets	3%
0402	Boxes, Enclosures, and Conduit Bodies	5%
0403	Panelboards and Switchboards	6%
0404	Raceways, Cables, and Bus Ducts	3%
0405	Flexible Cords and Fixture Wires	2%
0501	Switches, Receptacles, and Light Fixtures	3%
0502	General Use Equipment and Other Appliances	3%
0503	Motors and Controllers	3%
0504	Transformers, Generators, and Miscellaneous Equipment	3%
0601	Hazardous Locations	3%
0602	Health Care Facilities	2%
0603	Miscellaneous Other Special Occupancies	1%
0604	Commercial Garages, Gas Stations, and Bulk Stations	3%
0701	Swimming Pools, Fountains, and Similar Installations	4%
0702	Miscellaneous Special Equipment	3%
0801	Emergency Systems	2%
0802	Signaling Systems	2%
0803	Fire Alarm Systems	2%
0804	Communications Systems	1%

Before you book: the ICC passing score is a scaled 75, not 75 percent.

Common questions

How many questions are on the ICC E2 exam?

The E2 Commercial Electrical Inspector exam has 80 multiple-choice questions with a 210-minute limit, which works out to about 158 seconds per question.

Is the ICC E2 exam open book?

Yes. The E2 is an open-book exam. The constraint is time rather than recall: you have roughly 158 seconds per question including the lookup.

How long is the ICC E2 exam?

210 minutes, or 3.5 hours, for 80 questions.

What is on the ICC E2 exam?

8 topic areas. The heaviest is Branch Circuit and Feeder Requirements at 19 percent, followed by Wiring Methods and Distribution Systems at 19 percent. The full weighting is published by ICC and reproduced on this page.

Which code book do I need for the E2 exam?

The the adopted electrical code is the primary reference. Confirm the edition your jurisdiction has adopted, because adopted editions vary by state and the exam is written to a specific one.

The companion books