Pressure indicators; Wires, electric; Identification threads for electric wires; Material for electricity mains (wires, cables); Terminals (electricity); Collectors, electric; Switchboxes (electricity); Connectors (electricity); Junction boxes (electricity); Connections for electric lines; Contacts, electric; Couplings, electric; Light dimmers (regulators) (electric); Regulating apparatus, electric; Sockets, plugs and other contacts (electric connections); Theft prevention installations, electric; Control panels (electricity); Distribution consoles (electricity); Wire connectors (electricity); Circuit breakers