Code of Practice for the Electricity (Wiring) Regulations - 2009 Edition
Code of Practice for the Electricity (Wiring) Regulations - 2009 Edition
Code of Practice for the Electricity (Wiring) Regulations - 2009 Edition
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26E Supply Connection to Welding Sets<br />
Welding sets having a current rating exceeding 30A single phase or half <strong>of</strong> <strong>the</strong><br />
maximum demand <strong>of</strong> an installation in any one phase should be permanently<br />
connected to <strong>the</strong> mains on a 3-phase supply. Exposed conductive parts <strong>of</strong><br />
welding sets must be effectively connected to earth.<br />
26F Installation <strong>of</strong> Fluorescent and Gaseous Discharge<br />
Lamps<br />
(a) Capacitors and chokes should normally be fitted inside <strong>the</strong> luminaire.<br />
Where <strong>the</strong>y are fitted separately, <strong>the</strong>y should be mounted in a metal box.<br />
Precautions should be taken to prevent <strong>the</strong> components from<br />
overheating, e.g. by <strong>the</strong> provision <strong>of</strong> adequate ventilation.<br />
(b) The type and size <strong>of</strong> cables should be properly selected with due regard<br />
to <strong>the</strong> ambient temperature, <strong>the</strong> inrush current and high voltages<br />
generated during starting. The neutral conductor in every discharge lamp<br />
circuit should have a cross-sectional area not less than that <strong>of</strong> <strong>the</strong> phase<br />
conductor.<br />
26G Installation <strong>of</strong> Category 3 Circuits<br />
Electrical installation <strong>of</strong> Category 3 circuits should comply with <strong>the</strong><br />
requirements <strong>of</strong> <strong>the</strong> relevant authority in respect to fire protection aspects.<br />
26H High Voltage Discharge Lighting Installation (Neon<br />
Signs)<br />
(1) Requirements <strong>of</strong> circuits<br />
(a) High voltage discharge lighting installation should not be connected<br />
to <strong>the</strong> electricity supply through a plug and socket arrangement.<br />
(b) Circuits should be capable <strong>of</strong> carrying <strong>the</strong> total steady load current<br />
<strong>of</strong> <strong>the</strong> lamps, any associated gear and also <strong>the</strong>ir harmonic currents.<br />
(c) Where exact in<strong>for</strong>mation on <strong>the</strong> associated gear is not available, <strong>the</strong><br />
product <strong>of</strong> <strong>the</strong> rated wattage <strong>of</strong> <strong>the</strong> associated gear and a<br />
multiplying factor <strong>of</strong> not less than 1.8 shall be taken as <strong>the</strong> demand<br />
<strong>of</strong> <strong>the</strong> installation in volt-amperes.<br />
(d ) The cross-sectional area <strong>of</strong> <strong>the</strong> neutral conductor in every discharge<br />
lighting circuit should not be less than that <strong>of</strong> <strong>the</strong> phase conductor.<br />
(e) Every switch <strong>for</strong> a discharge lighting circuit should be identified with<br />
a permanent label and should have a normal current rating not less<br />
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