IEC: 189-4 - 1980 (Amendment N0.1 - 1989); Low-frerquency cables and wires with P.V.C. insluation and P.V.C. sheath Part 4 Distribution wires with solid conductors, P.V.C. insulated, in pairs, triples, quads and quintples 

 - Geneva  IEC  1989 
 - 3p 
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