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Alternative Power
Grounding/Earthing a Portable Generator & Cable Required for Permanent Installation
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<blockquote data-quote="jacksdad" data-source="post: 1136543" data-attributes="member: 6069"><p>I'm not a sparkie so cannot provide professional electrical advise but as pointed out by LAV, I think priority number one is to ensure that your installation is compliant and that your insurance company is happy with it. You need to stress with your sparky that he needs to CoC the install which should be run by your insurer before he gets final payment. </p><p></p><p>SANS regs are reasonably clear on how it should be done:</p><p></p><p>[ATTACH=full]23444[/ATTACH]</p><p></p><p>and</p><p></p><p><strong>6.12.4 Earthing of the neutral of combined sources</strong></p><p></p><p>When an installation that has a common neutral is supplied from a</p><p></p><p>combination of transformers and generators located near one another, the</p><p></p><p>neutral terminal of each of these items shall be connected to a single neutral</p><p></p><p>bar. This neutral bar shall be the only point at which the neutral of the</p><p></p><p>installation is connected to the consumer's earth terminal except as in the</p><p></p><p>case in 7.12.3.1.3 or 7.16.4.</p><p></p><p></p><p></p><p><strong>7.12.3.1.2 </strong>In an installation that is supplied from a combination of</p><p></p><p>transformers and alternative supplies located near to each other, the neutral</p><p></p><p>points of each of these items shall be connected to a single earthed neutral</p><p></p><p>bar (see P.1). This earthed neutral bar shall be the only point at which the</p><p></p><p>neutral of the installation is earthed. Any earth leakage device shall be</p><p></p><p>positioned in such a way as to avoid incorrect operation due to the existence</p><p></p><p>of any parallel neutral/earth path.</p></blockquote><p></p>
[QUOTE="jacksdad, post: 1136543, member: 6069"] I'm not a sparkie so cannot provide professional electrical advise but as pointed out by LAV, I think priority number one is to ensure that your installation is compliant and that your insurance company is happy with it. You need to stress with your sparky that he needs to CoC the install which should be run by your insurer before he gets final payment. SANS regs are reasonably clear on how it should be done: [ATTACH type="full"]23444[/ATTACH] and [B]6.12.4 Earthing of the neutral of combined sources[/B] When an installation that has a common neutral is supplied from a combination of transformers and generators located near one another, the neutral terminal of each of these items shall be connected to a single neutral bar. This neutral bar shall be the only point at which the neutral of the installation is connected to the consumer's earth terminal except as in the case in 7.12.3.1.3 or 7.16.4. [B]7.12.3.1.2 [/B]In an installation that is supplied from a combination of transformers and alternative supplies located near to each other, the neutral points of each of these items shall be connected to a single earthed neutral bar (see P.1). This earthed neutral bar shall be the only point at which the neutral of the installation is earthed. Any earth leakage device shall be positioned in such a way as to avoid incorrect operation due to the existence of any parallel neutral/earth path. [/QUOTE]
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Grounding/Earthing a Portable Generator & Cable Required for Permanent Installation
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