Habitation Wiring
Habitation Wiring Diagram Daisy's habitation wiring is essentially four largely separate circuits. The simplest is a transformer located on the bulkhead behind the battery and connected to the hook-up 240v. Charge is supplied to the battery via a diode which ensures there is no loss of charge across the transformer when the hook up supply is not connected. The transformer has its own built-in fuse. The second circuit comprises a lead from the vehicle ignition (A14) which closes a relay (R1) to complete a circuit between the vehicle and leisure battery when the ignition is on. This lets the alternator charge the leisure battery when in motion. More modern vehicles have technology to reduce the alternator current if the vehicle battery is fully charged so that fuel is saved. This then needs a more sophisticated circuit. Daisy does not need this complexity. Diode D1 has been added because otherwise the starter motor circuit takes power from both batteries. This can be...