I had this heat pump installed about 3 months ago, i converted from gas to a heat pump, I told the installers that I would install the wiring to the box for the aux heater strips. However, I need to know the gauge of wiir to use...I'm not sure if an 8/2 with ground or a 6/2 with ground is good, I also don't have the info on what size grid is in this unit. its a 3.5ton Bryant with a built in aux heat grid. Thanks -Matt