Which device is used to seal and protect splices in irrigation wiring from moisture?

• A. Soldered joints with electrical tape
• B. Weatherproof wire connectors
• C. Plain wire nuts without sealing
• D. Inline fuses

Answer: (B)

Weatherproof wire connectors are designed to seal and protect splices in outdoor or moist environments. They provide a watertight or water-resistant enclosure around the joined conductors, preventing moisture from entering the connection and causing corrosion, shorts, or failure. In irrigation systems, where wiring is exposed to rain, irrigation spray, and underground moisture, using connectors rated for wet locations keeps the electrical path reliable and safe.

Soldered joints with electrical tape aren’t dependable in moisture-prone settings because tape can loosen, peel, or degrade, allowing water to wick into the joint. Plain wire nuts without sealing offer little to no moisture protection, so moisture can still reach the conductors. Inline fuses protect against overcurrent but do not seal or protect the splice from moisture, so they don’t address the problem of water intrusion at the connection.