50 59 00 Construction Material Delivery/Hauling 50 61 00 Construction Material Supplier 50 63 00 Equipment/Tool Sales 27 32 00 Voice Communications Terminal Equipment 23 34 00 HVAC Fans 26 24 00 Switchboards and Panelboards 26 26 00 Power Distribution Units 26 27 00 Low-Voltage Distribution Equipment 26 28 00 Low-Voltage Circuit Protective Devices 27 16 00 Communications Connecting Cords, Devices and Adapters 32 10 00 Bases, Ballasts and Paving

26 00 00 Electrical 26 24 00 Switchboards and Panelboards 26 01 00 Operation and Maintenance of Electrical Systems 26 24 16 Panelboards

26 00 00 Electrical 23 34 00 HVAC Fans 26 24 00 Switchboards and Panelboards 10 14 00 Signage 26 50 00 Lighting 07 80 00 Fire and Smoke Protection 23 55 00 Fuel-Fired Heaters 23 62 00 Packaged Compressor and Condenser Units 26 52 00 Emergency Lighting 26 53 00 Exit Signs 48 10 00 Electrical Power Generation Equipment 48 14 00 Solar Energy Electrical Power Generation Equipment

26 24 00 Switchboards and Panelboards 26 01 00 Operation and Maintenance of Electrical Systems 26 50 00 Lighting 26 20 00 Low-Voltage Electrical Transmission 26 10 00 Medium-Voltage Electrical Distribution

26 24 00 Switchboards and Panelboards 26 26 00 Power Distribution Units 11 52 00 Audio-Visual Equipment 28 00 00 Electronic Safety and Security 28 31 00 Fire Detection and Alarm 25 50 00 Integrated Automation Facility Controls 28 13 00 Access Control 28 23 00 Video Surveillance 26 10 00 Medium-Voltage Electrical Distribution 11 61 00 Broadcast, Theater and Stage Equipment 26 56 00 Exterior Lighting 27 10 00 Structured Cabling 27 13 00 Communications Backbone Cabling 27 15 00 Communications Horizontal Cabling 27 41 00 Audio-Video Systems 28 39 00 Mass Notification Systems 40 94 00 Digital Process Controllers

26 24 00 Switchboards and Panelboards 26 09 00 Instrumentation and Control for Electrical Systems 26 50 00 Lighting 48 00 00 Electrical Power Generation 48 10 00 Electrical Power Generation Equipment 26 56 00 Exterior Lighting 03 37 00 Specialty Placed Concrete 11 31 00 Residential Appliances 22 51 00 Swimming Pool Plumbing Systems 26 55 00 Special Purpose Lighting 40 14 00 Fuel Gases Process Piping 48 71 00 Electrical Power Generation Test Equipment 48 01 00 Operation and Maintenance for Electrical Power Generation 48 70 00 Electrical Power Generation Testing

27 40 00 Audio-Video Communications 26 24 00 Switchboards and Panelboards 28 00 00 Electronic Safety and Security 10 40 00 Safety Specialties 41 00 00 Material Processing and Handling Equipment 33 71 00 Electrical Utility Transmission and Distribution 25 58 00 Integrated Automation Control of Electronic Safety and Security Systems 28 23 00 Video Surveillance 26 10 00 Medium-Voltage Electrical Distribution 10 17 00 Telephone Specialties 27 10 00 Structured Cabling 25 13 00 Integrated Automation Control and Monitoring Network 28 01 00 Operation and Maintenance of Electronic Safety and Security 28 08 00 Commissioning of Electronic Safety and Security 27 21 00 Data Communications Network Equipment 27 51 00 Distributed Audio-Video Communications Systems 33 83 00 Wireless Communications Distribution 40 01 00 Operation and Maintenance of Process Integration 41 01 00 Operation and Maintenance of Material Processing and Handling Equipment 41 08 00 Commissioning of Material Processing and Handling Equipment

25 00 00 Integrated Automation 26 24 00 Switchboards and Panelboards 26 01 00 Operation and Maintenance of Electrical Systems 31 23 00 Excavation and Fill 28 00 00 Electronic Safety and Security 25 10 00 Integrated Automation Network Equipment 25 58 00 Integrated Automation Control of Electronic Safety and Security Systems 28 13 00 Access Control 48 14 00 Solar Energy Electrical Power Generation Equipment 26 56 00 Exterior Lighting 27 10 00 Structured Cabling 40 94 00 Digital Process Controllers 25 13 00 Integrated Automation Control and Monitoring Network 27 21 00 Data Communications Network Equipment 25 11 00 Integrated Automation Network Devices 25 12 00 Integrated Automation Network Gateways 25 53 00 Integrated Automation Control of Fire-Suppression Systems 26 11 00 Substations 26 41 00 Facility Lightning Protection 34 40 00 Transportation Signaling and Control Equipment 48 15 00 Wind Energy Electrical Power Generation Equipment