E1 · area 03 · subtopic 0305
Panelboards
5 percent of the E1 Residential Electrical Inspector exam. At 60 questions, that is roughly 3 questions, each with about 120 seconds of budget including the lookup.
- Exam
- E1
- Area
- Branch Circuit and Feeder Requirements
- Weight
- 5%
- Questions
- ~3
What this subtopic covers
Panelboards: rating, circuit identification, overcurrent protection and correct installation.
How to drill it
- Find the chapter of the International Residential Code that carries this subject and read it once for structure, not retention: what lives here, what gets sent elsewhere, which tables exist.
- Write your own plain-language phrases for what this subtopic covers, then note the code's terms beside them. Mismatches between the two columns are exactly where exam questions cost you time.
- Run timed lookups: pick a requirement named in the descriptor above, start a stopwatch, find the governing text in your book, stop. Log the seconds. Past two minutes is a miss even when the answer is right.
- Weight your reps to the number above. Roughly 3 questions means this subtopic deserves a dedicated drill session of its own.
2024 IRC Fast-TabsPre-printed tabs for the 2024 edition. Place them yourself; the placement is the study.Check priceFor the whole exam in one view, the E1 residential electrical study notes by weight rank every area by how many questions it carries.
The rest of area 03: Branch Circuit and Feeder Requirements (28%)
| Subtopic | Weight | |
|---|---|---|
| 0301 | Feeders | 5% |
| 0302 | Branch Circuit and Feeder Calculations | 6% |
| 0303 | Branch Circuit Ratings and Overcurrent Protection | 7% |
| 0304 | Required Branch Circuits | 5% |
The kit that goes on the table
2024 IRCThe book itself
2021 IRC + tabsIf you register on 20212024 Fast-TabsPlace them yourself
Construction Master ProFeet-inch math, no errorsMatch the book and tabs to the edition you register for.Confirm which, first.
The 120-second study sheet, free
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