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Crimping of flexible cord conductors

PG
Like most of us, I often crimp flne strand conductors, especially for screw terminals but do not do this for domestic lamp holders and roses etc.

I thought that I would check Section 526 (Electrical Connections) of the Regs but did't find a clear statement of requirements for crimped ends. 

I was particularly unsure of what 526.9.1 was specifying for fine wire conductors "conductor ends shall be suitably treated".


Any guidance or comment would be appreciated.


Regards
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  • 0
    Well, a 2.5mm single with no over sleeve is clearly better cooled than one inside the jacket of T and E grouped with another one equally hot.

    Look at car wiring for how far you can really push PVC singles without any issues - also I suspect a higher insulation temperature - the wylex ones seem to be silicone rubber, so are presumably OK at 150-200C in parts.

    No dafter than the idea of 1.5mm cable for ring finals in pyrotenax cable (mind you I;ve not seen that mentioned for a while either) - only works because the cable tails get cooled where they fan out to be connected.

    In any case, yes, I'm a ferrule person, but be sure they are the right size, and crunched with the right tools - a poorly fitted ferrule is worse than none at all, so do not use them if you do not have the tools.

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  • 0
    Well, a 2.5mm single with no over sleeve is clearly better cooled than one inside the jacket of T and E grouped with another one equally hot.

    Look at car wiring for how far you can really push PVC singles without any issues - also I suspect a higher insulation temperature - the wylex ones seem to be silicone rubber, so are presumably OK at 150-200C in parts.

    No dafter than the idea of 1.5mm cable for ring finals in pyrotenax cable (mind you I;ve not seen that mentioned for a while either) - only works because the cable tails get cooled where they fan out to be connected.

    In any case, yes, I'm a ferrule person, but be sure they are the right size, and crunched with the right tools - a poorly fitted ferrule is worse than none at all, so do not use them if you do not have the tools.

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