Electrical supplies wholesalers distribute equipment and materials used in electrical installation, maintenance and repair. Their customers commonly include electricians, electrical contractors, facilities teams, builders, manufacturers and other trade businesses. Stock may cover cables and wiring, sockets and switches, plugs, lighting and lamps, consumer units, distribution boards, circuit protection, conduits, trunking, cable management, connectors, fixings and electrical tools. Some wholesalers also supply products for data networks, fire alarms, security systems, renewable energy or industrial control. As well as selling individual items and larger quantities, wholesalers may help customers identify suitable products, check availability and source less commonly stocked components. Typical services include trade accounts, collection from a trade counter, scheduled or site delivery, bulk ordering and product information.