Sigineer Power produces a wide range of inverter chargers for utility work trucks.
These models including some UL listed inverter chargers from 1KW to 3KW.
UL458-listed inverters meet strict vibration, environment, and thermal requirements .
The UL458 inverter’s circuitry includes a neutral-to-ground switching relays which bond N and G in when the inverter in off-grid mode, and unbond it if it is connected to utility shore power.
Find here for more details about neutral to ground bonding.
We also have some unique 4KW 12V inverters with 120V or 4KW with 120/240V .