LOW-VOLTAGE ELECTRICAL INSTALLATIONS - PART 5-52: SELECTION AND ERECTION OF ELECTRICAL EQUIPMENT - WIRING SYSTEMS
International Electrotechnical Committee
FOREWORD
520 Introduction
520.1 Scope
520.2 Normative references
520.3 Terms and definitions
520.4 General
521 Types of wiring system
521.4 Busbar trunking systems and powertrack systems
521.5 AC circuits - Electromagnetic effects (prevention
of eddy current)
521.6 Conduit systems, cable ducting systems, cable
trunking systems, cable tray systems and cable
ladder systems
521.7 Several circuits in one cable
521.8 Circuit arrangements
521.9 Use of flexible cables or cords
521.10 Installation of cables
522 Selection and erection of wiring systems in relation to
external influences
522.1 Ambient temperature (AA)
522.2 External heat sources
522.3 Presence of water (AD) or high humidity (AB)
522.4 Presence of solid foreign bodies (AE)
522.5 Presence of corrosive or polluting substances (AF)
522.6 Impact (AG)
522.7 Vibration (AH)
522.8 Other mechanical stresses (AJ)
522.9 Presence of flora and/or mould growth (AK)
522.10 Presence of fauna (AL)
522.11 Solar radiation (AN) and ultraviolet radiation
522.12 Seismic effects (AP)
522.13 Wind (AR)
522.14 Nature of processed or stored materials (BE)
522.15 Building design (CB)
523 Current-carrying capacities
523.5 Groups containing more than one circuit
523.6 Number of loaded conductors
523.7 Conductors in parallel
523.8 Variation of installation conditions along a route
523.9 Single-core cables with a metallic covering
524 Cross-sectional areas of conductors
524.2 Cross-sectional area of the neutral conductor
525 Voltage drop in consumers' installations
526 Electrical connections
526.8 Connection of multi wire, fine wire and very fine
wire conductors
527 Selection and erection of wiring systems to minimize the
spread of fire
527.1 Precautions within a fire-segregated compartment
527.2 Sealing of wiring system penetrations
528 Proximity of wiring systems to other services
528.1 Proximity to electrical services
528.2 Proximity of communications cables
528.3 Proximity to non-electrical services
529 Selection and erection of wiring systems in relation to
maintainability, including cleaning
Annex A (normative) - Methods of installations
Annex B (informative) - Current-carrying capacities
Annex C (informative) - Example of a method of simplification
of the tables of Clause 523
Annex D (informative) - Formulae to express current-carrying
capacities
Annex E (normative) - Effect of harmonic currents on balanced
three-phase systems
Annex F (informative) - Selection of conduit systems
Annex G (informative) - Voltage drop in consumers' installations
Annex H (informative) - Examples of configurations of parallel
cables
Annex I (informative) - List of notes concerning certain countries
Bibliography
Part 5-52 of IEC 60364 deals with the selection and erection of wiring systems.
| Document Type | Standard |
| Status | Current |
| Publisher | International Electrotechnical Committee |
| Committee | TC 64 |
