See EAA article on grounding
of composite aircraft.
Also see POH, 4-9.7
The right wing and header fuel tanks have chains connected to the
caps. The wing cap chain is bonded to the capacitance probe which
should always be touching the fuel surface somewhere in the wing.
The header cap's chain is long enough to touch the bottom of the tank and
also always touching the fuel surface.
By following the refueling procedures in the checklist and POH, the
fuel hose should always be grounded to the fuel's surface.