Generac Power Systems MAGNUM MMG75D Operating Manual page 62

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A ground connection is located on the far right of the cam lock panel. The unit MUST be connected to ground for
proper operating safety. The generator neutral is bonded to ground when it is shipped from the factory. The bonding
plate will need to be removed when the generator is used as a secondary power source or where bonding is completed
elsewhere in the circuit. Installation should be in compliance with the national electrical code (NEC), state and local
regulations.
56 MMG75D-100D Operating Manual 33701 C