I want to use the AC charger to charge the B300S via a controlled (off peak) AC power supply. The AC500 may or may not be connected to the house load (via an interlocked change-over circuit switch) while charging. The power system is multiple earth neutral (MEN) and my concern is circulating current. The DC output pins of the AC charger shows 120VAC between each pin and the 240 V grid. Will there be circulating current problems?
@gregwill The way you connected is that the T500 adapter is charging the B300S and the AC500 is connected to the transfer switch to carry the load, right?
It’s okay, no worries.
Yes, that is what I am proposing. The off peak power supply for the T500 is MEN, so when the AC500 is connected to the house via the changeover switch, (the off peak power supply will still be connected), will there be any circulating currents? The house neutral is also bonded to the earth / MEN.
@gregwill The occurrence of this circulating current is due to the grounding potential difference connected to a multiple earthed neutral (MEN) system. When the T500 charges the B300S, although it is connected to the MEN, the B300S only has positive and negative terminals and cannot be grounded, so the issue you are worried about will not actually occur.