Iinternational Electrotechnical Commission <br/><br/>
IEC: 60439-2-2005; low voltage switchgear and controlger assemblies - part 2: particular requirements for busbar trunking systems (busways) 

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 - Geneva  International Electrotechnical Commission  2005 
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<br/><br/> Took print from CD-Rom 
<br/><br/><label>Universal Decimal Class. No.: </label> /