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System connection
This section details connection to all of the SPA3-2 ports.
Earth bonding scheme
![Generic UCC and dual SPA earth bonding scheme](/cmmsupport/knowledgebase/media/img/en/31106f0e61ba4efbaf0214cffff797b9.png)
NOTE: All protective earth connections must be separately made to the incoming supply earth point.
NOTE: A ring pressure crimp must be used to terminate the protective conductor prior to being secured to the provided earth terminal.