The boat has three separate electric circuits:
- 12V internal system run by lead-acid batteries. ASAP has 3x100Ah for consumables and one 100Ah for starter battery. The 12V batteries for consumables are charged manily by the solar array but there is also a charger connected to the external 220V system. The alternator charges the starter battery.
- There is an external 220V system (landline) that supports battery charger and hot water heater. There is an earth fault breaker in this circuit that is found under the drivers seat (you have to lift up the seat to see it). The Landline rarely has to be used other than fpor hot water (which is also produced when running the engine).
- Internal 220V system where an inverter transforms current from the batteries up to 220V. The internal 220V system runs the microwawe. induction coocktop and the two 220V outlets. Due to the powerful solar array (that provides roughly 900W in a sunny day) there is rarely any need to connect a landline. However, coocking food should be done mid-day when there is still some sun left to charge the batteries. (In the future we plan to change lead-acid batteries to lithium and that would enable coocking also in the evening). The maximum power on the internal 220V system is 2400W (3000VA). There is a power-meter in the kitchen to keep track of consumption when coocking (se instruction manual below)