Junction box costs range from low‑price indoor models ($10‑$60) to weatherproof units ($70‑$450), with installation averaging $100‑$300 depending on location and materials. The distribution box cost encompasses not only the initial purchase. This guide provides a transparent look into pricing by capacity, component, and region—equipping engineers, contractors, and procurement teams with accurate insights for 2024 and beyond. - Incoming components and the essentials provided. 1 metering panel including: 0-100A ammeter and. Engineered for performance and protection, our indoor cabinet range includes multi-service distribution boards (MSDB) and sub-main distribution boards, all built to ensure easy installation, space efficiency, and long-term reliability. Our outdoor low voltage cabinets are designed for durability. Market context (at-a-glance): Industry analysts valued the global low voltage wire & cable market at roughly USD ~ 145. Nearly 70% of new homes are now built with low voltage systems (industry estimate) meaning that.