- The SC-RSC-EL Passing Score, Explained
- Two Exams, Two Different Passing Thresholds
- How the 60 Questions Are Distributed Across 9 Domains
- Doing the Math: What 44/60 Actually Means
- Fees, Attempts, and the One-Year Eligibility Clock
- Open-Book Rules That Affect Your Score
- Where to Focus Study Time Given the Scoring
- Frequently Asked Questions
- You need 44 of 60 scored questions correct (73.3%) to pass the SC-RSC-EL trade exam.
- The separate Business Management and Law exam requires 34 of 50 correct (68%).
- Services, Feeders, and Branch Circuits carries the most weight at 15 questions.
- General Electrical Knowledge follows closely with 13 questions out of 60.
The SC-RSC-EL Passing Score, Explained
If you're preparing for the South Carolina Residential Specialty Contractor Electrical Exam, the single most important number to memorize is 44. That's how many correct answers you need out of 60 scored multiple-choice questions to pass the trade portion of the exam administered by PSI Services LLC on behalf of the South Carolina Residential Builders Commission. Forty-four correct answers works out to 73.3%, and you have 180 minutes to get there.
This isn't a curved score, and it isn't adjusted after the fact. It's a fixed threshold set by the Commission, and PSI applies it consistently to every candidate sitting the Residential Electrical trade exam at a PSI test center. There's no partial credit for "almost right" answers, and there's no bonus for finishing early. You either land 44 or more correct responses, or you don't pass - full stop.
For a broader breakdown of what candidates find toughest on test day, see How Hard Is the SC-RSC-EL Exam? Complete Difficulty Guide 2026. And if you haven't mapped out your prerequisites yet, start with SC-RSC-EL Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Two Exams, Two Different Passing Thresholds
Here's where a lot of applicants get tripped up: earning your Residential Electrician (RBE) license from LLR isn't a single test. It requires passing two separate examinations, each with its own scoring rule.
- Trade Exam (Residential Electrical): 60 scored questions, 180-minute limit, 44 correct required (73.3%).
- Business Management and Law for Residential Builders: 50 questions, 120-minute limit, 34 correct required (68%).
These are not combined into one blended score. You must clear each exam's threshold independently. A candidate who scores 50/60 on the trade exam but only 30/50 on the business-law exam has not satisfied licensure requirements - both scores have to clear their respective bars.
| Exam Component | Total Questions | Time Limit | Passing Score | Passing Percentage |
|---|---|---|---|---|
| Residential Electrical (Trade) | 60 scored | 180 minutes | 44 correct | 73.3% |
| Business Management and Law | 50 | 120 minutes | 34 correct | 68% |
Both exams are computer-delivered and open-book at PSI test centers. The business-law exam draws from NASCLA's South Carolina Residential Builders guide, eighth edition, while the trade exam relies on a distinct reference list covered below. Treat them as two separate study projects with two separate passing benchmarks, not one combined effort.
Key Takeaway
Don't let strong trade-exam prep lull you into under-preparing for the business-law exam. A 68% threshold still means missing more than 16 questions out of 50 fails you - treat it as its own study block.
How the 60 Questions Are Distributed Across 9 Domains
Not every content area on the trade exam carries equal weight. PSI's official question allocation breaks the 60 scored questions into nine domains, and knowing this breakdown changes how you should allocate study hours. For the full domain-by-domain breakdown, see SC-RSC-EL Exam Domains 2026: Complete Guide to All 9 Content Areas. Here's the allocation:
Domain 2: Services, Feeders, and Branch Circuits - 15 questions
The single largest domain on the exam. Nearly a quarter of your scored questions come from this area, covering sizing, calculations, and code requirements for service entrances, feeders, and branch circuits.
- Highest-yield domain for study time invested
Domain 1: General Electrical Knowledge - 13 questions
Second-largest domain, testing foundational electrical theory and code literacy that underpins the rest of the exam.
- Combined with Domain 2, these two areas account for 28 of the 60 scored questions - nearly half the exam
Domain 4: Grounding and Bonding - 6 questions
A mid-weight domain, but historically a source of missed points due to its technical nuance.
Domains 3, 5, and remaining domains - 4-5 questions each
Overcurrent Protection and Conductors and Cables each carry 5 questions. Raceways and Boxes, Lighting, Specialty (pool/spa, garages, generators, wheelchair lifts), and Safety each carry 4 questions.
Doing the Math: What 44/60 Actually Means
It helps to think in terms of "missable" questions rather than just a percentage. Out of 60 scored questions, you can afford to miss 16 and still pass. That sounds forgiving until you map it against domain sizes: missing 16 questions is roughly equivalent to missing every single question in Domain 2 (15 questions) plus one more. In practice, you'll want to spread your misses thin across domains rather than bombing any single high-weight area.
Remember also that PSI may include 5-10 unscored pretest questions mixed into your exam session. These questions don't count toward your 44-correct target, and their answering time is excluded from your official exam time, but you won't be told which questions are pretest items. Answer every question as though it counts - because for most of them, it does.
For a deeper dive into how these numbers translate into real-world outcomes for candidates, check out SC-RSC-EL Pass Rate 2026: What the Data Shows.
Fees, Attempts, and the One-Year Eligibility Clock
Scoring well matters even more once you understand the cost and time pressure around retakes. The PSI fee is $75 per examination portion - meaning a retake of just the trade exam costs $75, separate from the business-law exam fee. On top of testing fees, LLR charges $135 for the application, $220 for initial licensure, and $220 for the biennial renewal. A full pricing breakdown lives at SC-RSC-EL Certification Cost 2026: Complete Pricing Breakdown.
Beyond cost, there's a hard deadline: both examinations must be passed within your one-year eligibility period after Commission approval. You get three attempts within that window, and a third failure triggers a mandatory 12-month wait from your last attempt before you can try again. That's a significant setback for anyone planning to start residential electrical work on a timeline.
Key Takeaway
Every failed attempt costs $75 in PSI fees and burns time against your one-year eligibility window. Studying to comfortably clear 44/60 - not just barely reach it - protects both your budget and your schedule.
Open-Book Rules That Affect Your Score
Both the trade exam and the business-law exam are open-book, but "open-book" comes with strict limits that directly affect how fast you can find answers under the 180-minute clock. You're allowed to bring your references with highlighting, underlining, and permanent tabs. What's prohibited: handwritten notes, removable tabs, and any extra loose or attached papers. A silent, nonprinting, nonprogrammable calculator is also permitted.
The listed trade references are the 2017 National Electrical Code (or NEC Handbook), the 2018 International Residential Code (or the South Carolina IRC or IRC Commentary), Ugly's Electrical References (2017), and OSHA 29 CFR Part 1926. Make sure you're using these specific editions - the state-specific exam's reference list differs from what's used for the NASCLA alternative examination, and bringing the wrong code year can slow you down badly on calculation-heavy Domain 2 questions.
Where to Focus Study Time Given the Scoring
Because Domains 1 and 2 together make up nearly half the scored questions, your prep time should mirror that imbalance rather than treating all nine domains equally. A useful way to sequence this:
Domains 1 & 2 - General Knowledge and Services/Feeders/Branch Circuits
- Work through NEC sizing calculations repeatedly since these two domains total 28 of 60 questions
- Practice locating relevant NEC and IRC sections quickly using your tabbed references
Domain 4 (Grounding/Bonding) and Domains 3 & 5 (Overcurrent, Conductors/Cables)
- Grounding and Bonding's 6 questions are worth extra attention given their technical complexity
- Overcurrent Protection and Conductors/Cables each carry 5 questions
Remaining Domains and Full Practice Runs
- Cover Raceways/Boxes, Lighting, Specialty topics, and Safety - 4 questions each
- Run full 180-minute timed practice sessions to build pacing endurance
This is the only place in this article where generic scheduling advice applies - and even here, it's tied directly to the SC-RSC-EL question allocation, not a one-size-fits-all study calendar. For a complete first-attempt strategy, read SC-RSC-EL Study Guide 2026: How to Pass on Your First Attempt. You can also build hands-on familiarity with the question format using the practice tests on the main SC-RSC-EL practice site before test day.
Once you understand who typically pursues this license and what it opens up professionally, it's worth reviewing SC-RSC-EL Salary Guide 2026: Complete Earnings Analysis and Is the SC-RSC-EL Certification Worth It? Complete ROI Analysis 2026 to confirm the licensure is aligned with your career goals before you invest in a retake.
Frequently Asked Questions
You need 44 correct answers out of 60 scored questions, which equals 73.3%. This applies to the Residential Electrical trade exam administered by PSI Services LLC.
No. The Business Management and Law for Residential Builders exam has a different threshold: 34 correct out of 50 questions, or 68%. It is a separate exam with its own passing requirement.
No. PSI may add 5-10 unscored pretest questions to your session, and their answering time is excluded from the official exam time. They do not count toward the 44 correct answers you need, but you cannot identify which questions are pretest items, so answer all of them carefully.
You're allowed three attempts within your one-year eligibility period. If you fail a third time, you must wait 12 months from your last attempt before trying again. Each attempt also carries a $75 PSI fee per exam portion.
Services, Feeders, and Branch Circuits (15 questions) and General Electrical Knowledge (13 questions) together make up nearly half the exam. Mastering these two domains gives you the best mathematical path to clearing the 73.3% threshold.