Safety-first design: the toolkit provides planning estimates. It does not certify a design, determine code compliance, or override manufacturer instructions. Where ampacity, fuse interrupt rating, PV limits, BMS limits, grounding/bonding or AC work matter, the user must verify the final selection.
Premium RV Electrical Toolkit
Use a single calculator for a quick answer, or save your system voltage and battery details in My RV System.
Saved Results
Results saved on this device appear here. Print them as a project record or clear them when no longer needed.
My RV System
Power Consumption Calculator
Estimate daily energy from your RV appliances.
Battery Bank Calculator
Battery Runtime Calculator
Watts / Amps / Volts
Battery Series / Parallel Calculator
Solar Array Calculator
Solar Recharge Time
MPPT Controller Calculator
Solar Series / Parallel Calculator
PV Cable Calculator
Inverter Size Calculator
AC Load → DC Draw
Inverter Cable Calculator
DC-DC Charger Calculator
Wire Size Calculator — Voltage Drop Basis
Voltage Drop Calculator
Fuse / Breaker Planning Calculator
For safety, this tool requires a verified conductor ampacity from an approved source before it will produce a planning range.
Use 1.00 unless your equipment instructions or applicable standard require a continuous-load factor such as 1.25.