One ==Key Stage 4=====Meaning===[[File:3CoreLabelled.png|right|300px|thumb|This [[diagram]] shows the [[Live Wire|live wire]] in the [[3-Core]] cable.]]The '''live wire''' is one of the three [[Wire|wires]] in [[3-Core]] and a [[Electrical Plug|plug]] that has a brown [[Plastic (Material)|plastic]] covering and is held at a [[Electrical Potential|potential]] of [[230 Volts]]. ===About Live Wires===: The [[Live Wire|live wire]] is covered in brown [[Plastic (Material)|plastic]] [[Electrical Insulator|insulator]].: The [[Live Wire|live wire]] is the most dangerous [[wire]] in [[3-Core]] and [[Electrical Plug|plugs]].: The [[Live Wire|live wire]] is connected to a [[Electrical Fuse|fuse]] in the [[Electrical Plug|plug]] so that if too much [[Electrical Current|current]] goes through it into an [[Electrical Appliance|appliance]] the [[Electrical Fuse|fuse]] will break and stop the [[Electrical Current|current]]. {| class="wikitable"|-|[[File:ElectricalPlugOpen.png|center|300px]]|[[File:ElectricalPlugLabelled.png|center|300px]]|-| style="height:20px; width:200px; text-align:center;" colspan = "2" |The [[Live Wire|live wire]] is attached to the [[Electrical Fuse|fuse]] on the right, which is then attached to the pin on the right. of the [[Electrical Plug|electrical plug]].|}