When I made the service call, I found that one of the circuit breakers had tripped. It sure didn’t seem to make sense since I had changed the bulbs about a month earlier. He told me that the bulbs had burned out and needed to be replaced. Earlier this year a different customer called me because several of his lights were out. A circuit breaker can trip even if there isn’t a short.There are times when the fixture is so bad that there is no fix to it and it must be thrown away. If the fixture is bad sometimes we can replace the socket assembly and that often fixes the problem. When this happens the fixture is old and the insulation has worn off the wire.
A bad fixture can be the cause of the problem.When the bare wires touch, or if the exposed wires become wet, moisture can conduct electricity and the line shorts out. I have seen instances when chipmunks have chewed the insulation off the wires. Sometimes it can be quite tricky finding the problem. When a circuit breaker trips it often means that there is a short somewhere on the line.Once we properly connected each of the wires from the fixture to a corresponding low voltage power line the circuit breaker no longer tripped and all his lights worked fine. Every time power came on the line shorted out and the circuit breaker tripped. We found that both wires from the fixture and the cable were all secured together with one wire nut.
In the case of this homeowner’s system, we isolated the line which had the problem, and then checked the connections of the fixtures. We do this by testing each line until the circuit breaker trips. In order to diagnose the problem, we needed to isolate which lines were good and which line was the problem. When we inspected his transformer, we found that one of the circuit breakers kept tripping. Recently a homeowner called because some of his landscape lights were not working.
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