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How to Choose Irrigation Wire & Connectors

Irrigation control wire carries the low-voltage signal from your controller to each zone valve. Use multi-strand UF (direct-burial) wire with one strand per valve plus a common, and add a spare strand or two so you can expand or swap a bad conductor later.

Make every underground splice with waterproof, gel-filled connectors rated for direct burial — dry wire nuts corrode and fail. Size the wire gauge to the run length so full voltage reaches the solenoid.

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