contato elétrico e sistema de conexão elétrica

An electrical contact includes at least one grooved channel defined in an interior surface of the electrical contact along at least a portion the electrical contact disposed along a longitudinal axis. The portion is configured to axially receive a lead of a wire cable for attachment thereto and thereby allow the attached lead to at least engagingly make contact against a recessed surface of the grooved channel. The grooved channel has a depth and includes at a least one sidewall extending along the depth. The sidewall includes at least one section that angularly extends from the interior surface to a point recessed from the interior surface disposed on the sidewall along the depth.