ISO 10133 pdf download – Small craft — Electrical systems- Extra-low-voltage d.c. installations

ISO 10133 pdf download – Small craft — Electrical systems- Extra-low-voltage d.c. installations.
NOTE See Annex Clot voltage drop calculatoons
Circuits that typicafy require a 3 % voltage drop include:
a) panel boardiswitchboard rnan conductors:
b) navigation lights;
c) bilge blowers;
d) bilge pumps: and
e) other equipment vital to safety or where voltage drop should be kept to a minimum as specified by their manufacturer,
5 Batteries
5.1 Batteries shall be permanently installed in a dry, ventilated location above anticipated bdge water level.
5.2 Batteries shall be installed in a manner to restrict their movement horizontally and vertically considering
the intended use of the craft, including trailenng if applicable. A battery, as installed, shall not move more than
10 mm in any direction when exposed to a force corresponding to twice the battery weight
5.3 Batteries as installed in the craft shall be capable of indinations of up to 30 without leakage of electrolyte. Means shall be provided in monol’iull sailing craft tar contanment of any speed electrolyte up to ridinations of 45g.
5.4 Batteries shall be installed, designed or protected so that metallic objects cannot come into unintenbonal contact with any battenj terminal
5.5 Batteries, as installed, shall be protocted against mechanical damage at their location or within their endosure
5.6 Batteries shall not be installed directly above or below a fuel tank or fuel filter without an intervening deck or structure to i5olate fuel components.
5.7 Any metallic component of the fuel system within 300 mm and above the battery top, as installed, shall be electrically insulated, See Figure 1.
7.3 Conductors and cables shall be supported throughout their length in conduits, cable trunkmg or trays, or by individual supports at maximum intervals of 450 mm.
7.4 Sheathed conductors and battery conductors to the battery disconnect switch shall be supported at maximum intervals of 300 mm with the first support not more then 1 m from the terminal, and other sheathed conductors at maximum intervals or 450 mm.
EXCEPTION Sheathed outboard starter motor conductors.
7.5 Conductors which could be exposed to physical damage shall be protected by sheaths, conduits or other equivalent means. Conductors which could be exposed to physical damage. mcludlng those passing through bulkheads or structural members, routing near sharp edges and any area where chafing may occur, shall be protected against insulation damage by chafing.
7.6 Conductors shall have minimum dimensions in accordance with TableA.2, or the conductor manufacturer’s rated current amperage and allowable voltage drop for the load to be carried. See 4.7 and 4.8.
7.7 Each conductor longer than 200 mm installed separately shall have an area of at least 1 mm2. Each
conductor in a multi-conductor sheath shall have an area of at least 0,75 mm2 and can extend out of the sheath
a distance not exceeding 800 mm.
EXCEPTION Conductors of minimum 0,75 mm2 used as internal wiring In panel boards.
7.8 Conductors of a d.c. circuit shall not be contained in the same winng system as an ac. cwcuit, unless one of the following methods of separation is used:
a) for a multicore cable or cord, the cores of the d.c. circuit are separated from the cores of the ac. circuit by an earthed metal screen of equivalent current-carrying capacity to that of the largest core in either circuit;
b) the cables are insulated for their system voltage and installed in a separate compartment of a cable conduit or trunking system:
C) the cables are installed on a tray or ladder where physical separation is provided by a partition;
d) separate conduits. sheathings or trunking systems are used;
e) the d.c and a.c. conductors are fixed directly to a surface and separated by at least 100 mm.
7.9 All equipotential bonding conductors shall be identified by green or green with a yellow stripe insulation, or can be uninsulated. Conductors with green or green with a yellow stripe Insulation shall not be used for current-carrying conductors
NOTE The protective conductors of the s.c. electrical System Isa. ISO 13297) also uses green or green with a yellow strçe insulation and may be connected to the craft engine d.c. negative terminal.
7.10 Means of identification other than colour for d.c. positive conductors Is permitted If pi’operly Identified on the craft wiring diagrams of the electrical system(s).
7.11 All d.c. negative conductors shall be identified by black or yellow insolation If the craft is equipped with an a.c. electrical system in accordance with ISO 13297, which can use black insulation for live conductors, yellow insulation shall be used for d.c. negative conductors of the d.c. system. Black or yellow insulation shall not be used for d.c. positive conductors.
NOTE I In conformance with IEC 6O446I4I, conductor Insulation colours of the a.c. system are:
— live conductors black or brown.
— neutral conductors: white or light blue.