Iowa Journeyman Electrician Exam Study Resources
Source-linked official information is available below. Other licensing and examination details remain under primary-source review.
Note: Our practice questions are based on NEC 2023.Official Iowa licensing and exam-format details are being verified against primary sources.
Quick Answer
This guide includes source-linked information for Journeyman Electrician. Review the official evidence below for the fields currently confirmed, and use the linked authority sources to confirm any details that remain under review before making plans or paying a fee.
Official Source-Linked Information
We show only fields explicitly supported by current primary sources below. Other official-format fields are withheld when they are incomplete, conflicting, or not published.
Official Journeyman Electrician Information
These are the Iowa fields directly supported by the linked current sources. Other licensing and exam-format details remain under review.
- Credential
- Journeyman Electrician.
- Source: PSI Iowa Electrical Examining Board Candidate Information Bulletin, updated September 19, 2025
- Scored examination block
- 80 scored items in 180 minutes. 70% correct to pass.
- Source: PSI Iowa Electrical Examining Board Candidate Information Bulletin, updated September 19, 2025
- Reference policy
- The cited bulletin permits the National Electrical Code, 2023 Edition or National Electrical Code Handbook, 2023.
- Source: PSI Iowa Electrical Examining Board Candidate Information Bulletin, updated September 19, 2025
Official sources for this guide
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Common Questions About the Iowa Electrician License
Where can I confirm the current Iowa electrician exam requirements?
Confirm current licensing scope, examination format, fees, and scheduling instructions with the applicable Iowa licensing authority before making plans or paying a fee.
NEC Code Study Guides
General NEC study resources. Confirm the current official exam blueprint with the applicable licensing authority.
NEC Article 110, Electrical Installations
Working space clearances (Table 110.26), temperature ratings (110.14), interrupting ratings, and workmanlike execution.
NEC Article 210, Branch Circuits
GFCI, AFCI, circuit ratings, outlet spacing, and the continuous load rule.
NEC Article 220, Load Calculations
Step-by-step residential standard and optional methods with worked examples.
NEC Article 230, Services
Overhead clearances, 6-disconnect rule, minimum 100A service, and disconnect location.
NEC Table 310.16, Wire Sizing & Ampacity
Temperature columns, correction factors, adjustment factors, and NEC 240.4(D).
NEC Article 430, Motors
Conductor sizing, SCGF protection at 250%, overload protection, and disconnect rules.
NEC Article 240, Overcurrent Protection
Standard breaker ratings, 240.4(D) small conductors, and the 10-foot and 25-foot tap rules.
NEC Article 250, Grounding & Bonding
Grounding electrode system, bonding jumpers, and equipment grounding conductors.
NEC 314.16, Box Fill Calculations
Five volume categories, cubic-inch table, and exam-style worked examples.
NEC Chapter 9, Conduit Fill
Tables C1–C12, 40% fill rule, and how to size conduit for mixed wire bundles.
Electrician Exam Math: Complete Formula Guide
Ohm's Law, power wheel, voltage drop, three-phase power, and transformer calculations with worked examples.
NEC Article 300, Wiring Methods
Physical protection, burial depths, 6-inch free conductor rule, boxes at splices, and plenum wiring.
NEC Articles 404 & 406, Switches & Receptacles
15A vs 20A receptacle rules, tamper-resistant requirements, wet/damp location covers, and snap switch grounding.
NEC Article 334, NM Cable (Romex)
Permitted uses, 4½-foot support intervals, 12-inch box rule, 1.25-inch edge clearance, and where Romex is prohibited.