An electrical load center for residential and commercial buildings includes an enclosure, a cover assembly, and a panelboard. The panelboard includes an insulated base, first and second bus bars, each of the first and second bus bars having an elongated main member, a plurality of connecting members, each of which is integrally formed from an edge of the main member, and a plurality of conducting members integrally formed from each of the connecting members. The panelboard further includes at least one neutral bar. The neutral bar is preferably I-shaped and includes a generally vertical main body, and transverse upper and lower members. The transverse upper member is preferably thicker than the transverse lower member and includes an outward taper from a top surface to a bottom of the transverse upper member to provide a greater contact surface area.