1. A continuous electrical path, or a system of conductors, through which an electric current is intended to flow. 2. An assembly of pipes and fittings, forming part of a hot-water system, through which water circulates.
1. A continuous electrical path, or a system of conductors, through which an electric current is intended to flow. 2. An assembly of pipes and fittings, forming part of a hot-water system, through which water circulates.