I had a persistent problem with my pool light. If it was on for 15 minutes or so, it would trip the breaker. Eventually it burned the bulb too, after less than a year of infrequent use. Today, I pulled out the light to replace the bulb. There was no water in the light.
After replacing the 500 watt bulb, I decided to time exactly how long the light would stay before tripping the breaker. But now, the breaker switch immediately trips when I turn on the light. Even when I remove the interrupter, and wire it directly from breaker box to light, it trips the second I turn on the power.
So, removing the possibility of a bad switch/interrupter, and blown bulb, I am left with possibilities of a bad breaker switch, or bad wiring, or replacing the light itself, which is an old swimquip.
Where should I start?