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SY Cable containment

GHEC

I know the subject of SY cables in fixed power installations pops up a lot but please bear with me.

I know that SY cable does not meet any British or harmonised standards and is 'discouraged' under BS 7671, but can be installed and noted as a departure on the installation certificate. 

As it will need to be 'safe' under BS 7671, should SY cable be installed in metallic containment such as steel trunking?

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    In many ways the 'universal'  dual pig tail grooved glands are easier than the fully circumferential compression type. Can actually be quite a bit faster than doing SWA in practiced hands.  And you can still use a pirahna nut inside the box if you wish.

    But yes a lot of folk do seem to cock it up. Note in this 3 min video he should have threaded the body onto the cable before teasing the braid !  It is a rookie error, like wiring a BS4343 plug without the backshell.
    There are very few realistic  cases where you can thread the gland body on to the cable from the other end afterwards, but luckily for him a demonstration on a 3 ft length in a classroom is one of them.

    Mike

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  • 0

    In many ways the 'universal'  dual pig tail grooved glands are easier than the fully circumferential compression type. Can actually be quite a bit faster than doing SWA in practiced hands.  And you can still use a pirahna nut inside the box if you wish.

    But yes a lot of folk do seem to cock it up. Note in this 3 min video he should have threaded the body onto the cable before teasing the braid !  It is a rookie error, like wiring a BS4343 plug without the backshell.
    There are very few realistic  cases where you can thread the gland body on to the cable from the other end afterwards, but luckily for him a demonstration on a 3 ft length in a classroom is one of them.

    Mike

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