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Maintenance free approach to jointing different CSA conductors

psychicwarrior

Good day

An effective and regulation justifiable maintenance free joint of differing CSA e.g. 10mm to 4mm: is it realistic and if so what might satisfy please and specifically the splice approach (crimp, screw terminal , etc) ?

(A similar  question some time back produced the suggestion of a compound filled joint perhaps - but that was for matching CSA )

Or is it a case (as it feels) that a joint like this really ought to be accessible for maintenance because of its factors ?

Thank you.

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    BS7671:2018:Amd2:2022 Regulation: 526.2 Where a soldered connection is used the design shall take account of creep, mechanical stress and temperature rise under fault conditions.

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    BS7671:2018:Amd2:2022 Regulation: 526.2 Where a soldered connection is used the design shall take account of creep, mechanical stress and temperature rise under fault conditions.

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