Originally Posted by vapilot2004
Hello Alan,
While a bond to the aluminum has been practiced in the past, for heavy loads the earth , ground or return circuit is carried on its' own wire.
vap
All aircraft electrical circuits use the Airframe as the "Earth" There is no seperate earth wiring !
Component chasis are bonded to the airframe to complete the fault path. Should a short to the chasis occour and to provide uniformity of bonding. (The latter An all together different subject.)
Yes 3 Phase star wound gennies are neutral earth bonded