Hi Rob, thanks for bringing the link to our attention - it is being fixed now.  Once live, there you will find the power guide info you're looking for.
[URL] this doc is referenced in the myquotes configurator but I do not have access.  I'm looking for a power cable guide for the VxRail with better descriptions and possibly images. Also would like to have a power calculator based on load of the appliance. 
Power Cable Guide for VxRail