Tradefox Reference
Reference.The facts behind the job, country by country.
Colour codes and standards for the trade: wiring, plugs, earthing, pipes, buried services, gas cylinders, welding hoses, fire extinguishers, refrigerants and data cabling, each entry rated and linked to its source.
236 countries and territoriesWorld wiring coloursLine, neutral and earth colours for single and three phase, including old colours and change dates.236 countries and territoriesPlugs, sockets, voltage and frequencyPlug types A to O, mains voltage and 50/60 Hz, with an adapter checker for UK travellers.236 countries and territoriesEarthing systems around the worldTN-S, TN-C-S, TT and IT explained, with each country’s system and RCD rules.31 standardsPipe identification coloursBS 1710, ASME A13.1, AS 1345, DIN 2403, ISO 14726 and more, compared side by side.10 schemesGas cylinder coloursEN 1089-3 shoulder colours, the UK, US, medical and world schemes, and how to read a cylinder.18 schemesUnderground utility coloursBuried pipe, cable and duct colours, surface paint marks and safe digging, country by country.7 schemesWelding hose coloursISO 3821, US and world hose colours, thread rules, hose grades and flashback arrestors.38 refrigerantsRefrigerant colours and safety classesA1 to B3 safety classes, GWP, cylinder colours and the F-gas rules for installers.9 regionsFire extinguisher colours and classesColour codes, fire classes and which extinguisher to use on which fire.T568A/B · fibreData and fibre cable coloursRJ45 pinouts, crossover builder, 25-pair code and the fibre colour sequence.
Know the rules.Then practise the job.
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Reference data is checked against published regulations and utility rules where available. Entries marked “Check local rules” could not be confirmed from an authoritative source. Always follow the regulations that apply where you work.