120 or even 240V sounds low for a large server installation; I&#x27;ve seen 480V, 3-phase used before, as it has lower transmission losses.<p><a href="http:&#x2F;&#x2F;www-03.ibm.com&#x2F;procurement&#x2F;proweb.nsf&#x2F;objectdocswebview&#x2F;file8+-+server+tech-cram-efficiency+gains+with+480-277v+power+at+the+cabinet+level&#x2F;$file&#x2F;8-server_tech-cram-efficiency+gains+with+480-277v+power+at+the+cabinet+level.pdf" rel="nofollow">http:&#x2F;&#x2F;www-03.ibm.com&#x2F;procurement&#x2F;proweb.nsf&#x2F;objectdocswebvi...</a>