# Check first the resistance of your load(Appliances) and solve for the current(I) using ohm's law.
# If you already calculate your load current, check your GFCI current rating/setting if it suits to your load current. If the current rating/setting of your GFCI is lower than calculated load current, adjust(higher) your GFCI current setting. And if your GFCI has fixed current rating, replaced it with a higher current rating.
# Note: GFCI will also trip-off if your load(Appliance) resistance is lower, since starting current will spike. If you have more than 1 load, it must be turned-on individually.