Is IP67 Enough for In-Ground Lights?

IP67 is relevant to in-ground lighting, but the rating alone does not settle whether a light suits a particular installation. It describes dust protection and temporary immersion protection. A buyer also needs the exact configuration, supporting evidence and installation requirements, especially where water can collect around the fitting.

Why buyers ask about water

In a public ground-light discussion, users reported failures and one explicitly described water getting inside before the product was replaced. These are customer reports, not independent diagnoses. They show why a distributor needs a more useful answer than “it is waterproof”. Read the customer discussion.

What IP67 tells you—and what to check next

ERCO’s published classification guide describes IP67 as dust-tight with protection against the effects of temporary immersion; it distinguishes this from IP68 protection for continuous immersion under the stated conditions. A buyer should therefore avoid treating IP67 as permission to use a fitting permanently underwater. Read the IP classification guide.

For an in-ground installation, ask where water will go after rain, how the cable connection is protected and how the fitting is supported. Even ERCO’s instructions for an IP68 product require suitable drainage and approved connection arrangements. Those instructions illustrate why the installation matters; use the instructions supplied for your selected Hengen model. Read the installation example.

Hengen’s immersion demonstration

Hengen specifies IP67 for this resin in-ground series. The supplied photographs and short video show illuminated samples in a water tank. They provide a direct view of the demonstration, including the water level visible in the images.

A model-specific IP67 test report is not currently available with these materials. The clip does not establish a documented immersion duration, test depth or post-test inspection result. Buyers who require a formal report for approval should agree the documentation requirement before placing an order.

Keep each piece of evidence tied to its purpose

What should an importer send to the supplier?

Send the selected model, installation location, expected water exposure and any approval-document requirements. Explain whether the area drains after rainfall or is expected to remain submerged. Include the intended cable-connection arrangement so that the review covers more than the visible face of the light.

For an existing installation with water inside the fitting, collect photographs, model identification, installation details and the timing of the issue. Arrange appropriate inspection rather than assuming that every case is condensation.

A clear explanation for your customer

“This series is specified as IP67, and we can show you the immersion demonstration. For your project, we should also confirm the installation conditions and the documentation you need. The tank video is a demonstration; it is not a substitute for a model-specific test report.”