Electrical

Estimate generator full-load amps, next standard breaker size, inlet margin, and optional AIC margin from kW, kVA, or amps.

Size a generator transfer switch from watts, voltage, phase, main breaker size, and optional extra room.

Estimate inverter surge and continuous watts for motors, pumps, compressors, and tools, with safety margin and headroom check.

Calculate inverter efficiency, AC output, heat loss, usable energy, runtime loss, and load percent from power or voltage readings.

Size a battery-side inverter fuse from watts, voltage, efficiency, margin, and cable safe current.

Estimate DC battery cable size for an inverter using watts, volts, cable length, efficiency, voltage drop, and ampacity checks.

Estimate AC inverter or DC solar PV breaker size, then check panel busbar room for a load-side backfeed.

Estimate DC voltage drop, power loss, solar wire size, or max one-way run using voltage, current, length, material, and target drop.

Choose a PV-rated DC fuse size from panel Isc, parallel strings, fuse limits, wire ratings, and voltage checks.

Size PV combiner inputs, current rating, voltage rating, and string fuse review size from panel Isc, Voc, and future strings.