Number one handheld computer calculator for the electrical industry. Tells electrical voltage drop over distance, both for AWG and metric cables. Conduit sizing Circuit Breaker selection Grounding Conductors NEMA Starters/Horsepower Find cost to run lights and equipment per day, week, month and year. Calculate amperage and wattage data. Find DC, AC single and 3-phase Kilowatts when amps, voltage power factor is known Find single and 3-phase Kilovolt-Amps when amps voltage is known Find Single and 3-phase Amps when kVA and voltage is known Find DC, AC single and 3-phase amps when kilowatts, voltage and power factor is known Find DC, AC single and 3-phase horsepower output when amps, voltage, efficiency and power factor are known Find DC, AC single and 3-phase amps when horsepower, voltage, efficiency and power factor is known Calculate foot candle brightness of light at any distance from a light source. Reference section includes many handy electrical formulas, tables and diagrams. Context-sensitive online help. Color support Includes Windows version you can conveniently use on your desktop/laptop. Windows version looks and works exactly like the handheld version, so there is no need to learn anything new. Also see EstiMaker, designed to help electrical professionals with the estimating/bidding process, letting an estimator create a take-off estimate in, generally, at least a third of the usual time.