The New Mexico PSI Residential Electrical Wiring ER-1 Contractor online exam prep course from One Exam Prep provides focused training on the code, wiring methods, and installation practices required for the ER-1 classification, emphasizing the National Electrical Code, residential circuitry, service equipment, grounding, overcurrent protection, load calculations, and state-specific licensing rules. The course aligns with PSI exam structure and supports candidates in understanding regulatory, safety, and project-management requirements essential for New Mexico residential electrical contracting work.
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