1.American 300A Welding Earth Clamp 2.American 800A Heavy Duty Earth Clamp 3.American 500A Earth Clamp 4.Holland 300A Copper Earth Clam 5.Holland 500A Copper Earth Clamp (1). If all of these requirements are met, then it is not required to ground the generator frame: The generator is mounted to truck or trailer The auxiliary power is taken from receptacles on the generator using a cord and plug arrangement The receptacles have a grounding pin The frame of the generator is bonded, or electrically connected, to the truck or trailer frame (2). If either of these conditions are met, then the generator frame must be grounded: The generator is connected to a premises wiring system. For example, to supply power to a house during a blackout. The auxiliary power is hard wired into the generator without the use of cords and plugs. www.edaweld.com