Converter and inverter sizing, battery banks, shore power, surge protection, solar, and generators. Every voltage, amperage, and wire-gauge figure on this site is tied to a manufacturer manual, a published specification, or a safety listing, and we say which one.
Ten hubs covering the RV electrical system end to end. Start with the component you are specifying or the one that failed.
Pedestal power, 30A vs 50A service, voltage drop, and why your outlet reads 104 volts at 5pm.
Converter sizing, WFCO and Progressive Dynamics replacements, and lithium charge profiles.
Pure sine vs modified sine, continuous vs surge ratings, and honest sizing math.
LiFePO4 and AGM, usable capacity, charge acceptance, and cold-weather limits.
Panel sizing against real harvest, MPPT vs PWM, and what solar will not do for you.
Surge protector vs full EMS, open ground and reverse polarity detection, 30A and 50A units.
Inverter generators, real AC startup loads, parallel kits, and honest runtime numbers.
Wire gauge, fuse and breaker sizing, dogbone adapters, and cord ratings.
Symptom-first diagnostic paths for the failures that strand people.
These run real arithmetic in your browser, show every assumption, and state their limits. No AI guessing at your electrical loads.
Size a pure sine inverter against your real AC loads, including surge draw and efficiency loss.
Work out the usable amp-hours you need, then the rated bank size for your chemistry.
Add up what you are running and see how much headroom is left on your shore power service.
Estimate the converter output amps your DC loads and battery bank need.
Ordered diagnostic paths you can work with a multimeter at the pedestal.
We pull manufacturer manuals, specification sheets, install documentation, and safety listings, then cross-reference them. We never claim firsthand bench work that nobody on our team actually performed.
Manufacturer requirement, code requirement, common RV practice, and editorial recommendation are four different things. We mark which one you are reading.
Specifications apply to the exact model listed. We never carry a figure across to a sibling model, and lithium compatibility is stated only where the maker states it.