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Do-It-Yourself (DIY) Question & Answer Forum
Generator Earth Testing
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<blockquote data-quote="davey345" data-source="post: 484388" data-attributes="member: 15045"><p>the generator is bonded to true earth by two 16mm electrodes and the earth electrode is connected to the neutral star point so the source is a TNS. it is just how to go about proving that sufficient current will flow to cause a large enough current to take out the generator fuses or MCCB isolator, the gen has a fault earth current protection on it set at 10% of full load current, which would become 50A if there was no other discrimination in the circuit, but the MCCB has short circuit and overload protection on it so would trip before the generator. i just need to be able to put all this doen on paper and prove it.</p></blockquote><p></p>
[QUOTE="davey345, post: 484388, member: 15045"] the generator is bonded to true earth by two 16mm electrodes and the earth electrode is connected to the neutral star point so the source is a TNS. it is just how to go about proving that sufficient current will flow to cause a large enough current to take out the generator fuses or MCCB isolator, the gen has a fault earth current protection on it set at 10% of full load current, which would become 50A if there was no other discrimination in the circuit, but the MCCB has short circuit and overload protection on it so would trip before the generator. i just need to be able to put all this doen on paper and prove it. [/QUOTE]
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