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Student & Learning Zone - City & Guilds
Re: Earthing
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<blockquote data-quote="Apache" data-source="post: 80238" data-attributes="member: 828"><p>Because the earth doesn't make up part of the circuit - under normal circumstances it has no electrical connection.</p><p></p><p>Now take a stainless steel toaster as an example, it's dropped or the workings corrode and the phase is able to come into contact with the metal case - rendering it live. The earth is connected to the case and takes away the fault current. The resistance from phase to earth is less than phase through your body so you don't get a shock and it's taken away.</p><p></p><p>Also the RCD would trip but that's another story!</p></blockquote><p></p>
[QUOTE="Apache, post: 80238, member: 828"] Because the earth doesn't make up part of the circuit - under normal circumstances it has no electrical connection. Now take a stainless steel toaster as an example, it's dropped or the workings corrode and the phase is able to come into contact with the metal case - rendering it live. The earth is connected to the case and takes away the fault current. The resistance from phase to earth is less than phase through your body so you don't get a shock and it's taken away. Also the RCD would trip but that's another story! [/QUOTE]
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Student & Learning Zone - City & Guilds
Re: Earthing
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