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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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    Hi OlympusMons - thanks for your input.

    The point you're making is exactly in line with my thinking. My belief is that it is indeed acceptable within the scope of 60204 to use twin ferrules on the basis that a ferrule with two wires is considered as a single conductor. However, I have discovered a couple of fairly straight-talking parties online (who appear to be fairly professional and knowledgable) who categorically state that twin ferrules are not allowed because of the two conductors one terminal rule.This is what sent me off on my hunt for definitive guidance.

    Any other wisdon out there?

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  • 0

    Hi OlympusMons - thanks for your input.

    The point you're making is exactly in line with my thinking. My belief is that it is indeed acceptable within the scope of 60204 to use twin ferrules on the basis that a ferrule with two wires is considered as a single conductor. However, I have discovered a couple of fairly straight-talking parties online (who appear to be fairly professional and knowledgable) who categorically state that twin ferrules are not allowed because of the two conductors one terminal rule.This is what sent me off on my hunt for definitive guidance.

    Any other wisdon out there?

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