7 Generators, power line conditioners, power supplies, voltage surge protectors, voltage suppressors, voltage regulators, electrical switches, micro-turbines
9 Harmonic filters for electrical signals, capacitor banks
35 Procurement, namely, purchasing electrical power generation equipment, power line conditioners, power supplies, voltage surge protectors and suppressors, and electrical switches
37 Installation, maintenance, and repair of electrical power generation equipment, power line conditioners, power supplies, voltage surge protectors and suppressors, and electrical switches
42 Auditing electrical power quality and electical usage