Robert J. Lawrie

Q.The electrical system of my Victorian Queen Anne-style home (circa 1900) consists of a mixture of knob and tube, cotton-covered braid, nonmetallic, and plastic sheathed cables...

You must consider steady-state, acceleration, and starting torque to ensure the lowest motor operating costs. There's torque, and then there's torque. There's torque, as required...

Q. One of my electricians asked if it was a Code violation to install a 200A-rated, 42-circuit-load center, main lugs only, with protection consisting of a 100A switch/circuit...