Absolutely!
I have dual chargers and an 80-Amp HPWC. I normally set the current to 56 Amps to get half the resistive heating of the full 80 Amps. When I do this, you can see the current ramp up to 28 Amps, pause, then ramp up to the full 56 Amps. If you do this at 80 Amps, the pause is at 40 Amps, etc. The assumption is that the charging system makes sure that all is OK with the master charger before ramping up the slave charger. The nice part about this split is that the 1/2 power resistive heating applies to the chargers also, and electronic failure rate goes down exponentially with reduced temperature. This is a real exponential equation, not just a phrase. :wink:
Dual chargers are nice for home charging, but where they really help is on the road, when you find High Amp L2 (HAL2) chargers in the wild! It happens more often than you would think, which is why I strongly recommend them to new buyers placing their orders.