you can refer to the below quickspecs for the available PDUs and UPS
https://h20195.www2.hpe.com/v2/getdocument.aspx?docname=c04128339 ( Page: 14)
use the power advisor to calculate the power requirement at the site.
https://paonline56.itcs.hpe.com/?Page=Index
Based on this you can use the power backup / UPS to power on the entire enclosure and for uninterrupted power.
you can refer to the power supply configuration on C7000 : https://support.hpe.com/hpesc/public/docDisplay?docLocale=en_US&docId=emr_na-kc0107478en_us
Refer to C7000 Enclosure cabling: https://support.hpe.com/hpesc/public/docDisplay?docId=emr_na-c03899627
You can also refer to the installation and setup guide for C7000: http://h20628.www2.hp.com/km-ext/kmcsdirect/emr_na-c00698286-13.pdf
For proper redundancy, make sure you connect your power supplies to different power sources / PDU / UPS.
If you need further asssitance, you can opt for a consulting service with HPE.