Hardwood Floors April/May 2025

Health & Safety Focus (Continued)

ELECTRICAL DEMANDS OF WOOD FLOORING EQUIPMENT Wood flooring tools such as drum sanders, edgers, and orbital sanders often operate with high power demands. The worksite may include both single-phase and three phase power systems. Here are some key considerations: Proper Circuit Breaker Rating – If the circuit breaker is rated for higher amperage than the cable or cord can handle, it can lead to overheating and insulation damage. Overloaded circuits pose risks of electrical shock, fire, and equipment damage. Correct Voltage – Connecting equipment to an incorrect voltage system can cause: • Overvoltage: Excessive heat, internal

SINGLE-PHASE VS. THREE-PHASE SYSTEMS Single-Phase Systems – Common in residential and small commercial settings, these systems operate on a single AC waveform. A common voltage for single-phase systems is

120/240 volts. Three-Phase Systems – Used in industrial and large commercial buildings, three-phase systems provide continuous, consistent power with minimal fluctuation. Common voltages for three-phase systems are 120/208- or 277/480-volts. Connecting equipment to the wrong type of system, especially tools with Educate Workers – Training employees on electrical safety, temporary wiring basics, and recognizing system ratings is critical to prevent injuries and equipment failures. Proper Planning – Evaluate equipment needs alongside the available power systems to ensure compatibility. Thoughtful planning minimizes mistakes and avoids rushed, unsafe decisions. Qualified Personnel – Employers are responsible for ensuring their employees have the knowledge, skills, and abilities to preform assigned tasks. Temporary wiring installations, electrical connections, and identification of electrical system type and voltage may require knowledge and expertise beyond the scope of general workers. Hiring licensed electricians ensures safe and compliant connections. Compliance with any local permitting and inspection requirements also may necessitate professional oversight. Properly installed temporary wiring is essential to maintaining worker safety, ensuring equipment longevity, and completing projects successfully. Adhering to NEC® Article 590 and understanding the unique electrical demands of wood flooring equipment prevents costly mistakes and reduces risks. By prioritizing compliance, training employees, and hiring qualified personnel, when necessary, contractors and operators can create safe, efficient, and productive work environments that support long-term success. Kyle Krueger has more than two decades of experience in the electrical industry. From his beginnings as a Journeyman Wireman to his current role as the Executive Director of Codes and Standards for the National Electrical Contractors Association (NECA), Krueger’s journey is marked by expertise and leadership. He holds a Master Electrician License, Commercial Electrical Inspector License, and Design Engineer of Electrical Systems, and is also certified through NFPA as a Certified Electrical Safety Compliance Professional (CESCP). For more information, visit necanet.org. electric motors, can cause failure or damage. BEST PRACTICES FOR SUCCESS

PHOTO COURTESY OF NWFA

damage, or complete failure. • Undervoltage: Reduced performance and excessive wear on components.

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