RV Electrical Reference Charts

Battery Cable Size Chart

Minimum battery and inverter cable gauge by DC current and one-way run length, at 12V and 24V, matched to standard ANL and MEGA fu

Battery Chemistry Chart

LiFePO4, AGM and flooded lead-acid batteries compared on usable capacity, weight, cycle life, Peukert effect and charging behavior

State of Charge Chart

Resting voltage to state of charge for 12V lead-acid and LiFePO4 batteries, side by side, and why LiFePO4 needs a shunt, not a vol

DC-DC Charger Sizing Chart

DC-DC charger size against alternator rating at 30, 40 and 50 percent share conventions, plus the reverse lookup and daily energy

Inverter Size Chart

Inverter size to buy against a running AC load, with the DC amps that load pulls from the battery bank at 12V and 24V, at a labele

Peak Sun Hours by Region

Peak sun hours by US region for winter, summer and annual averages, plus the solar array size needed to cover a daily energy budge

RV AC Power Chart

Running and startup watts for 11,000, 13,500 and 15,000 BTU RV air conditioners, with and without a soft starter, and what generat

Appliance Power Draw Chart

Running and startup watts for every common RV appliance, plus DC amps at 12V and AC amps at 120V, for sizing an inverter, generato

Fuse Size Chart

Standard fuse and breaker ratings by continuous circuit current, the maximum fuse each wire gauge can carry, and fuse body types c

Generator Sizing Chart

Generator starting watts needed for common RV load combinations, with and without a soft starter, plus how much headroom four popu

Shore Power Ratings Chart

NEMA shore power and household outlet ratings compared, plus continuous-load safe draw and what a dogbone adapter does and does no

Solar Output by Sun Hours

Daily watt-hours and amp-hours per 100W of RV solar panel across a range of peak sun hours, at nameplate rating and at the realist

12V Voltage Drop Chart

Voltage drop in volts and percent by wire gauge, current and one-way run length on 12V RV systems, plus the maximum length that ho

Wire Gauge Ampacity Chart

NEC and ABYC copper wire ampacity by gauge, DC resistance per 1000 feet, and the minimum wire gauge for a 3 percent voltage drop a