WEBVTT

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A hole through a core limb removes

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steel from the magnetic section.

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Magnetic flux must bend around it,

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and punching can leave a stressed,

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burred edge.

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A through-bolt also needs correctly designed insulating

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sleeves and washers.

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If that insulation fails and a conductive

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loop links changing flux,

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circulating current can cause local heating.

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Glass-fibre limb bands offer a different design

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route, without a through-hole in the limb.

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Their material, tension and spacing still need

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engineering control.

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Bolts can remain appropriate in other parts

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of a core when the design provides

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for them.

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Compare the complete clamping design,

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not the label alone.