At fixture and outlet locations, install surface-mount conduit boxes. Run wires from the boxes to the wireway, leaving 6 to 8 inches of extra wire at boxes to make connections. Use splice connectors to join wires together at splices and junctions. Choose a power source like a wall. Surface-mounted wiring and conduit, also known as raceway systems, provide a practical alternative to running electrical cables inside walls and ceilings. This comprehensive guide aims to delve into the world of surface conduit wiring, providing an in-depth understanding of its purpose, advantages. When installing surface-mounted Electrical Metallic Tubing—a type of conduit—you want things to look neat.