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  • Practical Motorhome

    CIRCUIT BREAKERS EXPLAINED

    Aug 22, 2019 4 minutes

    Motorhome designers take into consideration two overriding constraints when planning the mains electrical supply system, namely:

    1 Protection from damage and potential fire hazards caused by appliances failing and thereby exceeding the current rating of the internal mains distribution wiring.

    2 Protecting the occupants of the ’van from lethal electric shocks in the event of an appliance becoming faulty.

    Overcurrent protection

    In the past, overcurrent (that is, high current demand and/or short circuit) conditions were handled by wire fuse links designed to melt and thereby isolate the supply should a fault occur.

    Nowadays homes, and motorhomes, are fitted with current-sensing circuit breakers – miniature circuit

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