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Water almost never breaks in through the enclosure — it walks in along your cables. Insects and lizards use the same doors.

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The three rules

1

Right gland, right torque

Every cable through a correctly sized gland, torqued so the seal grips the jacket — finger-tight is not sealed. Oversized glands “made to work” with tape are leak paths.
2

Every unused port gets its bung

Unused entries sealed with the supplied sealing bungs — an open knockout is an insect highway and a capillary water inlet.
3

Drip loop before every bottom entry

Form a U-bend below the entry on every cable so water tracking along the cable falls off at the bottom of the loop instead of following the jacket into the gland. Seal conduit tops so the conduit itself cannot channel water to the plate.

Gland plate done right and a formed drip loop — figures KNB-PH-03 and KNB-PH-04

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Nothing drips from above — Kent siting policy

No water pipes, AC drain lines, vents or window sills above the unit. Steady drips and condensation over years defeat gasket assumptions that were written for rain jets, not for a slow tap.
Pending Kent validation. [KNB-VAL-16] The formal manual wording for overhead drip sources is under re-verification. Until published here, treat this as mandatory Kent siting policy: nothing that can drip — pipes, AC drains, window sills — above the unit, and photograph the space above it for the commissioning record.

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Commissioning evidence

The Site Photo Checklist requires close-ups of the gland plate and at least one drip loop. Take them before the trunking cover goes on.

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Common mistakes

  • Two cables through one gland “because it sealed okay” — the seal needs one round jacket.
  • Drip loops formed above the entry (an upside-down U) — that is a funnel, not a loop.
  • Silicone smeared over a wrong-size gland — silicone ages; the gland seal is the system.

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When to escalate