I recently had two HPWC professionally installed on a single 100A circuit (see photo) in my garage. The electrician set the master unit to a maximum output current of 40A (rotary switch position 8). In this setting, it was only able to charge a single updated MS at 40A rather than 48A. Would it be safe to advance the rotary switch to 48A (position 9) or no? I understand that it is only safe to use only 80% of the 100A circuit (40A x 2) but I wonder if the load sharing smarts of the new HPWC is smart enough to keep things in check in the higher position.