SWA Gland Size Calculator

Find the correct gland size, thread, knockout and torque for steel wire armoured cable.

SWA Cable Gland Size Calculator

Find the correct gland size, thread, knockout and torque for steel wire armoured cable.

Choosing an SWA gland

An SWA gland is selected from the cable's outer diameter — the gland's clamping range must cover the OD — not just the conductor mm². Adding cores increases the OD, so a 4-core cable needs a larger gland than a 2-core of the same size. Use a CW gland indoors (≈IP54), a BW gland outdoors (≈IP66), or an E1W barrier gland in hazardous areas.

The steel wire armour is usually the circuit protective conductor, so the gland must make a sound earth connection — fit an earth tag where the enclosure is not rated for armour earthing, and test armour continuity.

Frequently Asked Questions

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