Fast, easy to use comprehensive electrical calculators from the creators of iCertifi. The only electrical calculator designed specifically for Mac ? Electrical Calculators - Prospective current - Lux level calculator - calculate amount of luminaires required for room/lux level - BTU to watts - 3 Phase volt drop - kW to Amps - Resistance Ω - kW to HP - Solar - Estimated Energy Output Of A Photovoltaic System - Cable calculator, calculates minimum cable size required,volt drop, percentage drop & load. Suitable up to 400mm SWA Cables include: Twin and earth Swa 2,3 and 4 core PVC and XPLE Fire proof Tri Rated MIC light and heavy duty ? Features - Quick copy of results clipboard to paste into emails, messages etc - Option to keep Fast Calc always on top of screens