Try to use cable ties to suspend the cable above the component so the weight of the cable is not pulling down the IEC connection.
On the other end, I have even gone as far as attaching L brackets to the wall above the wall outlet to be able to hang cable ties to support the weight of a heavy plug .
On the other end, I have even gone as far as attaching L brackets to the wall above the wall outlet to be able to hang cable ties to support the weight of a heavy plug .