HVAC Journeyman Practice Exam 2026 - Free HVAC Practice Questions and Study Guide

The accepted standard practice regarding the placement of air-conditioning equipment in relation to a means to interrupt the electrical supply is that it must be no more than 15 feet away. This regulation is in place primarily for safety reasons; proximity to the electrical disconnect ensures that in the event of an emergency, a technician or homeowner can quickly and easily access the power supply to shut down the equipment.

This distance is important because it minimizes the risk of injury when servicing the equipment or in situations where immediate shutoff may be necessary due to electrical faults or other hazards. The safety regulation is consistent with the National Electrical Code (NEC), which often governs the installation and maintenance of HVAC systems to prevent shock hazards and ensure safe operational practices.

In contrast, greater distances, such as 25, 35, or 50 feet, can pose significant safety risks by making it more difficult to promptly disconnect power when needed, therefore they do not meet the recommended standards.