What is a key practice to protect electrical connections for outdoor lighting?

• A. Leave connections exposed to air.
• B. Use only plastic tape.
• C. Place connections in metal boxes without gasket.
• D. Protect connections from moisture with weatherproof enclosures.

Answer: (D)

Outdoor lighting connections must be protected from moisture, since moisture can seep into splices and cause corrosion, insulation breakdown, short circuits, or even shocks. The best practice is to use weatherproof enclosures that seal out water and dust. These enclosures are designed for outdoor use, with gasketed covers and proper entries for cables, and they carry ratings (like IP or NEMA) that confirm they protect the interior from rain and humidity. Keeping connections inside such enclosures maintains a dry, safe, and reliable electrical path even in wet conditions. Exposing connections to air invites moisture and corrosion, while simple tape degrades in sunlight and weather and doesn’t provide a true seal. A metal box without a gasket can still let water intrude, risking corrosion and failure. So, protecting connections from moisture with weatherproof enclosures is the correct practice.