Gfci
GFCI monitor the current balance between the Hot (black) wire and Neutral (white) wire.Typically, if an imbalance of approximately 10 miliamps occurs, it will trip.
What this is really saying is all of the current coming in via the black wire should go out the white wire. If it does not, then it is going to ground some other way. Examples of this are fan motors, auger motors, shorts, humans, etc. It is a safety to prevent electrical shock and possible death. By using a three to two adapter, you are not defeating the GFCI, you are removing the ground path for leakage. Be aware, if you lean on the equipment that you are using the adapter on, you stand a good change of becoming the ground path for leakage and it can hurt you before the GFCI kicks in. :icon_sick
If you provide a ground rod and attach it to your equipment, your GFCI will continue to trip wheather you use the adapter or not.
On the FEC's and Traegers, this leakage is normally the blower motor as they, over time and with use, develope leakage to the metal structure and cause a GFCI trip.
Mack