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Cable grouping factor - Space on ladder for no groupping

Good morning everyone.

If I may ask the more experienced members here...

I have a ladder with various submains departing from a Main Switchboard.

Is there any distance I could leave between a specific submain cable and the rest of the cables on the ladder (left and right) that allows me to get away from any grouping factor for this specific cable?

For example something like twice the external diameter of the cable left and right of the cable?

(Just an example)

Thanks

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0 Former Community Member over 5 years ago

See note 2 to table 4C1 - essentially, when the cable horizontal clearance is at least 2 x the cable effective diameter, then no grouping factor need be applied.

You need to be certain the contractor can achieve that, before you specify the cable size - they won't like very much for specifying spacing, either ? - contractor preference is to lump the lot on together with lots of random plastic ty wraps rather than cleat cables to achieve desired spacing !!

Regards

OMS
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0 Former Community Member over 5 years ago

See note 2 to table 4C1 - essentially, when the cable horizontal clearance is at least 2 x the cable effective diameter, then no grouping factor need be applied.

You need to be certain the contractor can achieve that, before you specify the cable size - they won't like very much for specifying spacing, either ? - contractor preference is to lump the lot on together with lots of random plastic ty wraps rather than cleat cables to achieve desired spacing !!

Regards

OMS
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Cable grouping factor - Space on ladder for no groupping

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