Before the Battery

Pilot scenario · conservative planning

RV weekend power

Declare the trip, the coach you already have and the loads you actually run. The rules return an inspectable architecture class — shore first, portable station, augmenting the house battery, installed, generator/hybrid, or an honest abstention — plus the next fact that would change it.

1–14 nights.

Recorded for context; the arithmetic uses the declared daily loads.

Camping pattern

Shore power availability dominates the architecture when it is always there.

Existing house battery

Unknown chemistry is never credited in the arithmetic.

Existing inverter
Connection need

TT-30 is treated as a compatibility constraint, not a label: a TT-30 inlet is a connector, not proof of continuous 30 A service.

Charging while driving

Only an existing alternator path is credited. Desired alternator charging does not eliminate a portable station.

Solar recharge
Air conditioner

Loads

Every row above enters the arithmetic. Nothing is consumed silently: a row left empty contributes zero.