In a typical irrigation controller installation, why is conduit recommended for the low-voltage wiring between the controller and valves?

• A. To provide mechanical protection and moisture resistance
• B. To increase electrical resistance
• C. To insulate the soil temperature
• D. To simplify color matching

Answer: (A)

Conduit is used to protect the low-voltage wiring path and keep it reliable in outdoor and buried installations. Running controller-to-valve wiring in conduit shields the conductors from physical damage, moisture, and pests, so moisture doesn’t reach splices or terminal connections and wires don’t get crushed or nicked by rocks, soil, or foot traffic. This protection reduces the risk of shorts, corrosion, and wire failures, and it also makes pulling wires and future replacements easier. The other options don’t address these real reliability factors: conduit doesn’t meaningfully increase electrical resistance, it doesn’t regulate soil temperature, and color matching isn’t a consideration in this context.