When looking at the wiring of a house, 100 amp wiring refers to the amount of amperage that is available for the entire house in its circuitry. Find out why the breakers on a 100 amp service panel may add up to more than 100 amps with help from a remodeling specialist in this free video on house wiring. Expert: William Perkinson Bio: William Perkinson is a partner with Perkinson Building Corporation, based in Birmingham, Ala. Filmmaker: Tim Brown