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neutral bar
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<blockquote data-quote="Evans Electric" data-source="post: 49956" data-attributes="member: 1408"><p>Try it this way Dan, the Potential Difference between live (brown) and earth is 240volts . The PD between live and neutral is 240 volts. The PD between neutral and earth is 0 volts (zero) Notice in a metal dist board that the earth bar is bolted to the case but the neutral bar is insulated from the case but still open to the touch.</p><p></p><p>On 3 phase its a big deal if the main neutral is lost, 415 volts round all the circuits , lamps blowing, fluorescents really weird , not to be recommended again . So, as long as it remains connected all is well , and no its not " live" as in touch it and you get a shock as long as its connected , there is no potential difference between the neutral bar and you , both at the same potential so you feel nothing. You are right in saying that all the circuits will be returning to the bar but after the load, how can I put it, the returning current is at earth potential , if you pulled the main neutral out and grabbed the bar all that current would flow through you , with fatal results I must add . Do not try that at home.</p><p></p><p>Deke</p></blockquote><p></p>
[QUOTE="Evans Electric, post: 49956, member: 1408"] Try it this way Dan, the Potential Difference between live (brown) and earth is 240volts . The PD between live and neutral is 240 volts. The PD between neutral and earth is 0 volts (zero) Notice in a metal dist board that the earth bar is bolted to the case but the neutral bar is insulated from the case but still open to the touch. On 3 phase its a big deal if the main neutral is lost, 415 volts round all the circuits , lamps blowing, fluorescents really weird , not to be recommended again . So, as long as it remains connected all is well , and no its not " live" as in touch it and you get a shock as long as its connected , there is no potential difference between the neutral bar and you , both at the same potential so you feel nothing. You are right in saying that all the circuits will be returning to the bar but after the load, how can I put it, the returning current is at earth potential , if you pulled the main neutral out and grabbed the bar all that current would flow through you , with fatal results I must add . Do not try that at home. Deke [/QUOTE]
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