When bonding of ferrous conduit is required at "each end of the raceway" as in NEC 2014 250.64(E)(1), how do you interpret "each end" when there are several sticks of conduit? One application is a GEC from a photovoltaic inverter to the GE at the service panel as required by 690.47(D), where the GEC runs about 60 feet and there are more than 6 sticks of EMT conduit. Does "each end" mean a bonding bushing at each end of the GEC, one at the inverter and another at the service panel, or a bonding bushing at each end of each EMT stick?