What is the best method to protect wiring connections from moisture?

Using waterproof wire nuts or gel-filled connectors is the most effective method for protecting wiring connections from moisture. These specialized connectors provide a robust barrier against water, preventing corrosion and electrical failures that can occur when moisture penetrates the connection. Waterproof wire nuts are designed to be used in outdoor or humid environments, ensuring that the wire connections remain secure and insulated from environmental elements.

The use of gel-filled connectors further enhances protection by creating a moisture-resistant seal around the wire connections. The gel provides additional insulation and helps to maintain electrical integrity, even in the presence of water or humidity. This is particularly important in irrigation systems where exposure to water is inevitable.

Other methods, while they may offer some degree of moisture protection, are not as reliable. For instance, electrical tape can deteriorate over time and may not offer a fully waterproof seal. Heat shrink tubing can provide a good barrier against moisture, but it requires careful installation to ensure complete coverage. Avoiding sealing connections altogether exposes them to moisture risks, compromising the system's safety and functionality. Therefore, using waterproof wire nuts or gel-filled connectors stands out as the optimal choice for long-term moisture protection in wiring connections.