Residential Wireman Exam (PSI) Practice Test
Build your confidence for Residential Wireman Exam (PSI). Practice the concepts, understand the answers, and strengthen your knowledge one question at a time.
Try a sample questionExam overview and details
The Residential Wireman Exam, administered by PSI, is a comprehensive assessment designed to evaluate the knowledge and competency of electricians specializing in residential electrical systems. This exam tests an individual's understanding of the National Electrical Code (NEC) as it applies to single-family and multi-family dwellings, including the installation, maintenance, and troubleshooting of electrical wiring, devices, and equipment. It is a critical step for those seeking licensure or certification as a residential wireman, a credential often required by state and local jurisdictions to perform electrical work legally and safely. Candidates who successfully pass this exam demonstrate their ability to apply code requirements to real-world residential scenarios, ensuring installations are safe, functional, and compliant. Passing this exam validates professional expertise and is a key milestone in an electrician's career progression within the residential construction and service sector.
Sample Questions
Choose an answer and explore the explanation to see how practice works.
A feeder is upsized for voltage drop from 6 AWG copper ungrounded conductors to 4 AWG copper.
A 60-ampere feeder supplies a detached garage panel with 120-volt receptacles and 240-volt equipment.
A metal raceway is used as the equipment grounding conductor for a garage circuit.
A detached garage feeder panel is supplied from the dwelling service equipment. The electrician is deciding where neutrals and equipment grounds terminate in the garage panel.
A 20-ampere kitchen countertop circuit is wired with copper NM cable.
Career Opportunities & Salary
Exam insights and study advice
Mastery of the material on this exam directly translates to the safety, reliability, and code compliance of residential electrical systems. A certified residential wireman ensures that homes are protected from electrical fires, shocks, and system failures. This credential is not just a regulatory hurdle; it is a public trust. It signifies to homeowners, contractors, and inspectors that the electrician possesses the verified knowledge to protect lives and property, which is the foundational responsibility of the electrical trade.