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Do-It-Yourself (DIY) Question & Answer Forum
Isolator for Sub Main
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<blockquote data-quote="RussellR" data-source="post: 79563" data-attributes="member: 5189"><p>What I am saying is the borrowed neutral is not a problem in practical terms. As the 4 pole isolation is only likely to be installed during new work or during a board change. Borrowed neutrals (meaning neutrals from other source DB's would be detected and eliminated.</p><p></p><p>The reason I put emphasis on the sub main, is by being further down the chain potential exists for someone to do something silly between you and the supply, such as a cross connection from phase to neutral (it happens !). To me isolation should mean just that you are completely isolated.</p></blockquote><p></p>
[QUOTE="RussellR, post: 79563, member: 5189"] What I am saying is the borrowed neutral is not a problem in practical terms. As the 4 pole isolation is only likely to be installed during new work or during a board change. Borrowed neutrals (meaning neutrals from other source DB's would be detected and eliminated. The reason I put emphasis on the sub main, is by being further down the chain potential exists for someone to do something silly between you and the supply, such as a cross connection from phase to neutral (it happens !). To me isolation should mean just that you are completely isolated. [/QUOTE]
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Isolator for Sub Main
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