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<oembed><version>1.0</version><provider_name>Electrical Riddle</provider_name><provider_url>https://electrical-riddle.com/fa</provider_url><author_name>Electrical Riddle</author_name><author_url>https://electrical-riddle.com/fa</author_url><title>- Electrical Riddle</title><type>rich</type><width>600</width><height>338</height><html>&lt;blockquote class="wp-embedded-content" data-secret="XKFXtPfuBa"&gt;&lt;a href="https://electrical-riddle.com/fa/forums/reply/1131/"&gt;&#x67E;&#x627;&#x633;&#x62E; &#x628;&#x647;: Grounding Riddle No.1 &ndash; Earth fault in no earthed system&lt;/a&gt;&lt;/blockquote&gt;&lt;iframe sandbox="allow-scripts" security="restricted" src="https://electrical-riddle.com/fa/forums/reply/1131/embed/#?secret=XKFXtPfuBa" width="600" height="338" title="&#x201C;&#x67E;&#x627;&#x633;&#x62E; &#x628;&#x647;: Grounding Riddle No.1 &ndash; Earth fault in no earthed system&#x201D; &#x2014; Electrical Riddle" data-secret="XKFXtPfuBa" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"&gt;&lt;/iframe&gt;&lt;script&gt;
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&lt;/script&gt;</html><description>I am unsure how to interpret your post. I thought that the RMS voltage between two phase conductors would be unchanged if one was grounded or none grounded. True, the peak voltage is 1.4 times the RMS voltage, but this is again unchanged if none or one is grounded. If these conductors are in a &hellip;  &#x627;&#x62F;&#x627;&#x645;&#x647; &#xBB;</description></oembed>
