Surface wiring

Wiring · Also: Surface conduit, Exposed wiring

In short

Cables run on the surface in conduit or trunking — easier to modify, more visible.

Surface wiring sits in plastic or metal conduit/trunking on the wall. Common for retrofits, yards, and places where chasing is impractical.

Agree the route with the electrician so trunking does not cut across feature walls awkwardly.