Which statement about outdoor luminaires attached to trees is true under NEC?

Which statement about outdoor luminaires attached to trees is true under NEC?

• A. Not permitted
• B. Permitted
• C. Permitted only if listed for tree mounting
• D. Permitted only in noncombustible trees

Answer: (B)

Outdoor luminaires can be mounted on trees under the NEC, as long as the fixture is rated for outdoor exposure and installed in accordance with its listing. The key factor is compliance with the fixture’s listing—landscape lights designed for exterior use are commonly mounted on trees, and the wiring and mounting must be weatherproof and properly protected. There’s no NEC rule requiring the tree to be noncombustible, nor a blanket prohibition on tree mounting; the installation is allowed when the fixture and method meet the listing and weatherproofing requirements.

Outdoor luminaires can be mounted on trees under the NEC, as long as the fixture is rated for outdoor exposure and installed in accordance with its listing. The key factor is compliance with the fixture’s listing—landscape lights designed for exterior use are commonly mounted on trees, and the wiring and mounting must be weatherproof and properly protected. There’s no NEC rule requiring the tree to be noncombustible, nor a blanket prohibition on tree mounting; the installation is allowed when the fixture and method meet the listing and weatherproofing requirements.