ISO 10133-2012 PDF

Full title and description

ISO 10133:2012 — Small craft — Electrical systems — Extra‑low‑voltage d.c. installations. This International Standard specifies requirements for the design, construction and installation of extra‑low‑voltage direct current (d.c.) electrical systems (nominal potentials up to 50 V d.c.) on small craft up to 24 m hull length; it also lists additional information to be included in the owner’s manual.

Abstract

ISO 10133:2012 sets safety and installation requirements for extra‑low‑voltage d.c. systems on recreational and small commercial craft (conductors forming part of an outboard engine assembly and not extending beyond the supplied cowling are excluded). The standard defines design, construction and installation rules and references annexed guidance for owner documentation.

General information

• Status: Withdrawn / superseded.
• Publication date: December 2012 (ISO edition published 2012‑12).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 47.080 (Small craft).
• Edition / version: Edition 3 (2012).
• Number of pages: 16 (as published by ISO).

Scope

Applies to the design, construction and installation of extra‑low‑voltage d.c. electrical systems with nominal potentials of 50 V d.c. or less on small craft with a hull length up to 24 m. The standard excludes conductors that are part of an outboard engine assembly when they do not extend beyond the engine manufacturer's supplied cowling, and it requires specific owner’s manual information listed in an annex.

Key topics and requirements

• Design and construction rules for extra‑low‑voltage (≤50 V d.c.) onboard d.c. systems.
• Installation practices for wiring, overcurrent protection, switching and earthing/bonding relevant to small craft.
• Requirements and limitations for conductors associated with outboard engine assemblies (exclusions noted).
• Information and guidance to be supplied in the skipper/owner’s manual (annex material).
• Safety-focused testing and verification practices for d.c. installations on vessels up to 24 m.

Typical use and users

Used by naval architects, marine electrical designers, boatbuilders, system installers, surveyors and classification societies for the design and verification of extra‑low‑voltage d.c. systems on small craft. National standards bodies and standards purchasers have also implemented ISO 10133 as EN/BS/UNE national (harmonized) versions prior to its replacement.

Related standards

ISO 10133:2012 replaces ISO 10133:2000 and has itself been withdrawn and revised by ISO 13297:2020 (Small craft — Electrical systems — Alternating and direct current installations), which consolidates and updates requirements for AC and DC installations. Many national/adopted versions (EN, BS, UNE, etc.) were published historically to harmonize the standard within regions.

Keywords

small craft; electrical systems; extra‑low‑voltage; d.c. installations; 50 V d.c.; hull length up to 24 m; owner’s manual; marine electrical safety.

FAQ

Q: What is this standard?

A: ISO 10133:2012 is an International Standard that provided requirements for the design, construction and installation of extra‑low‑voltage d.c. electrical systems on small craft (nominal potentials up to 50 V d.c., hull length up to 24 m).

Q: What does it cover?

A: It covered safety and technical requirements for wiring, protection, switching, bonding/earthing, and related installation practices for d.c. systems on small craft, and listed additional owner’s manual information in an annex.

Q: Who typically uses it?

A: Marine electrical designers, boatbuilders, installers, surveyors, classification societies and standards bodies implementing national/adopted versions (EN/BS/UNE etc.) used this standard when it was current.

Q: Is it current or superseded?

A: ISO 10133:2012 has been withdrawn and superseded — the requirements were revised and consolidated in ISO 13297:2020 (Small craft — Electrical systems — Alternating and direct current installations). Users should refer to ISO 13297:2020 (and any applicable national/adopted versions) for the current requirements.

Q: Is it part of a series?

A: Yes — it is part of the suite of small craft electrical system standards maintained by ISO/TC 188; ISO 10133 succeeded earlier editions (1994, 2000) and its subject matter is now covered together with AC requirements in ISO 13297:2020.

Q: What are the key keywords?

A: Small craft, extra‑low‑voltage, direct current (d.c.), 50 V, d.c. installation, marine electrical safety, owner’s manual.