BS EN 61439-5. Low-voltage switchgear & controlgear assemblies. Part 5. Particular requirements for assemblies for power distribution in public networks Switchgear, Electric control equipment, Low-voltage equipment, Electrical equipment, Electrical protection equipment, Electric power distribution, Electric power networks, Electric power systems, Three-phase current, Electrical installations, Electric enclosures, Bus-bars, Electric conductors, Marking, Verification, Electrical testing, Mechanical testing, Transformer substations, Electric substations, Electric connectors, Fuses