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EN60204 and twin ferrules

Dave in the shed

Hi All,

EN60204 states: "The connection of two or more conductors to one terminal is permitted only in those cases where the terminal is designed for that purpose." Does anybody know whether this prohibits the use of standard twin ferrules (where two wires are crimped into a single ferrule) or whether the assembly of two wires and a ferrule is somehow considered to be a single conductor in the eyes of the standard?

Twin ferrules seem to be commonly used in machine building, often with claims of compliance with 60204. I was expecting to find some easily accessible guidance/knowledge/definitions regarding this situation but my web trawl hasn't found much.

Any wisdom will be gratefully received. Thanks.

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    I agree absolutely.

    I'm a bit of a purist when it comes to doing things correctly (like ensuring that the correct type of wire is used in a ferrule). Sometimes that purist approach is driven simply because it is right and proper from an engineering point of view (including of course from a safety perspective) and sometimes it's driven by a need to conform to the requirements of a standard or directive for compliance reasons.

    My current dilemma is that I'd like to declare compliance with 60204 on a machine I'm currently designing/building but I'd also like to use twin ferrules in some locations due to space constraints. To add to the fun, the end client is pretty strict on compliance-related issues so I'd really like to have some definitive guidance in place before the finished machine gets condemned by an over-zealous client.

    Still hoping for more wisdom..... anybody?

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  • 0

    I agree absolutely.

    I'm a bit of a purist when it comes to doing things correctly (like ensuring that the correct type of wire is used in a ferrule). Sometimes that purist approach is driven simply because it is right and proper from an engineering point of view (including of course from a safety perspective) and sometimes it's driven by a need to conform to the requirements of a standard or directive for compliance reasons.

    My current dilemma is that I'd like to declare compliance with 60204 on a machine I'm currently designing/building but I'd also like to use twin ferrules in some locations due to space constraints. To add to the fun, the end client is pretty strict on compliance-related issues so I'd really like to have some definitive guidance in place before the finished machine gets condemned by an over-zealous client.

    Still hoping for more wisdom..... anybody?

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