Landscape Lighting Transformer Tripping Breaker

Use a high grade model such as the Hubbell GF5252I.

Landscape lighting transformer tripping breaker. If it follows the transformer then replace that transformer. Ground problem or defective GFCI. Transformer is cycling on off at night.

Excessive wattage load or short. I had a 20A AF-GFCI breaker that tripped fairly frequently when the circuit switches on. The thermal protector will also automatically reset.

It is on a dedicated circuit. Flip the switch down or right off and back up or left to reset it. About the time we had a very heavy rain over 5 inches they stopped working.

Look for a little white or orange toggle switch see photo. Tripped breaker or GFI. Your transformer is the big metal box mounted next to an exterior outlet.

GFI circuits are a little bit different. Check all breakers on transformer. Home What causes the breaker to trip on a low-voltage landscape lighting transformer.

We do this by testing each line until the circuit breaker trips. Every time the irrigation came on the breaker in the panel would trip. In order to diagnose the problem we needed to isolate which lines were good and which line was the problem.