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: '''3-Core''' contains a [[Live Wire|live wire]], a [[Neutral Wire|neutral wire]] and an [[Earth Wire|Earth wire]].
: '''3-Core''' is referred to as [[Double Insulated|double insulted]] [[wire]] because each individual [[wire]] is covered in a layer of [[Plastic (Material)|plastic]] [[Electrical Insulator|insulator]] and the three [[wire]]s together are covered in another layer of [[Plastic (Material)|plastic]].
{| class="wikitable"
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|[[File:3CoreLabelled.png|center|400px]]
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| style="height:20px; width:200px; text-align:center;" |The three [[wire]]s in '''3-core''' are covered in different colour [[Electrical Insulator|insulators]] to identify the [[wire]]s.
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