SEU is een kabelaanduiding volgens NEC / UL (USA): SE = Service-entrance cable; U = Flat (oval) cable with a concentric bare neutral (reading by usage, UNVERIFIED); SEU = Service-entrance cable, style U (flat), with a concentric bare neutral, gray jacket. 600 V, 90 C (XLPE) or 75 C (PVC). UL 854; NEC Article 338.