Electrical & Industrial Maintenance

Voltage Drop Calculations (ZOOM)

This two-hour class covers a practical method to compute voltage drop in single-phase and three-phase AC and DC circuits, the need for these calculations, how to use your calculator most effectively, how to solve voltage drop problems in the electrician license exam, and how to correctly size conductors for efficient operation in residential, commercial, and…


National Electrical Code (NEC) for Solar PV Installers (ZOOM)

This 4-hour course covers Article 690 of the NEC in detail including definitions of various PV systems, circuits, and components; requirements for circuit identification, routing, and ground-fault protection; voltage and current calculations; conductor sizing and overcurrent protection; disconnects and labeling; wiring methods; connections and interconnections; grounding; identification and connection to other power sources; and storage…


Pools, Spas, and Hot Tubs – Article 680

This 3-hour class covers the National Electrical Code requirements for swimming pools, fountains, hot tubs, spas, and hydromassage bathtubs, including: bonding and grounding; permitted wiring methods; clearances for overhead and underground wiring; rules for equipment disconnects and motors; distances for receptacles, luminaires, ceiling fans, and switches; rules for underwater lighting; the equipotential bonding grid; and…


Transformer Calculations (ZOOM)

This 2-hour interactive class covers calculations for correctly sizing transformer primary and secondary conductors and primary and secondary overcurrent protection for single-phase and three- phase transformers of all sizes. You will also learn how to adjust input values for transformers with efficiencies less than 100%. Participants should bring: 2020 NEC, calculator, highlighters, notebook and pencils.


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