Stromag Engineers Ltd. Offers Heavy Conductor Bar System. Stromag Engineers Ltd. Also manufactures Single pole individually insulated conductors, single pole PVC housing, tepeofrm copper conductor, multi conductor, pvc hosing Heavy Conductor Bar System is made from copper or aluminum as needed. The Heavy Conductor Bar System is insulated and used in the power transmission. The Heavy Conductor Bar System has a Current capacity 500 to 2000 Amps. Rated at 100% duty cycle and nominal voltage up to 600V.