Electrical Installation & Safety Tools

Installation work starts where the drawings stop, at the point where a real motor has to turn a real load. Motor Torque Calculator gives the rated torque from the nameplate kW or hp and rpm in four units, solves for power or speed instead when those are the unknowns, and follows the torque through a reduction gearbox with its losses taken out.

This page is planned to grow toward the safety side of the trade. Cable tray fill, clearance distances, derating factors, earth fault loop impedance and arc flash estimates are on the list.