CableCalc BS7671

CableCalc BS7671 is a focused cable-sizing and distribution-board design tool built to help electricians, contractors and consulting engineers perform BS 7671-compliant calculations quickly and produce professional documentation. The product comes in tiered editions (Level 1–4) that scale from simple on-site calculators to a full-featured designer capable of unlimited distribution boards, detailed single-line schematics, manufacturer protective-device libraries and aluminium cable support. It’s explicitly aimed at UK wiring-regulation workflows — voltage drop, Zs/disconnection time, fault current and earth fault checks are all core outputs — and is widely listed on software directories used by electrical professionals. The user interface is practical and workflow-driven rather than flashy: entry forms guide you through radial, ring and three-phase calculations, while higher levels expose drag-and-drop distribution-board building and schedule generation. For field use there’s also an iPad app variant that mirrors the core calculators and produces PDF printouts, making on-site sign-off and client reports straightforward. Reviewers on product directories praise the clear stepwise inputs and the ability to save project defaults to speed repeated tasks — a helpful touch when moving between similar jobs.