BS EN ISO 13297:2021+A11:2023 ISO 13297:2020+A1:2022
11.8 Access panels to compartments containing AC connections shall be provided with a label containing a warning about electrical shock hazards. For example:
WARNING — ELECTRICAL SHOCK HAZARD To avoid electrical shock hazard:
disconnect AC shore power and DC battery power to inverter before opening panel
11.9 All inverter/chargers shall include the following information for the charging system: a) input voltage, amperage and frequency; b) nominal output voltage and current; c) DC output voltage at float or shut off, if applicable; d) continuous output current at 12 V (24 V or 32 V) at specified input voltage at 25 °C; e) battery type; f) warning concerning internal charged capacitor hazard when servicing.
11.10 All inverters shall also include the following information: a) input voltage and amperage; b) continuous output current at rated voltage; c) nominal output voltage and frequency; d) surge capability and duration. NOTE
12 Overcurrent protection, DC systems
12.1 Overcurrent protection shall be provided by one of the following. See Annex E. a) A manually reset trip-free circuit breaker or a fuse shall be installed within 175 mm of the source of power for each circuit or conductor of the system, measured along the conductor.
b) If the conductor is connected directly to the battery terminal and is contained throughout its entire distance in a sheath or enclosure such as a conduit, junction box, control box or enclosed panel, the overcurrent protection shall be placed as close as practicable to the battery, but not to exceed 1,8m.
c) If the conductor is connected to a source of power other than a battery terminal and is contained throughout its entire distance in a sheath or enclosure such as a conduit, junction box, control box or enclosed panel, the overcurrent protection shall be placed as close as practicable to the point of connection to the source of power, but not to exceed 1m.
d) Overcurrent protection is not required in conductors from self-limiting alternators with integral regulators if the conductor is less than 1m, is connected to a source of power other than the battery, and is contained throughout its entire distance in a sheath or enclosure.
e) Conductors less than 175mm in length are exempt from overcurrent protection requirements. f) Cranking motor conductors are exempt from overcurrent protection requirements.
12.2 The voltage rating of each fuse or circuit-breaker shall not be less than the nominal circuit voltage; the current rating shall not exceed the value for the smallest size conductor in the circuit.
© ISO 2022 – All rights reserved 13
See Annex D for inverter and inverter/charger installations.
Distributed by the RYA under licence number 2020ET001 © BSI
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