pool light breaker throwing

[poolhelp101]

working on pool tonight, turned on the pool light switch and the breaker immediately throws.... any suggestions as to what is causing this or what i need to do? i do have the breaker off now waiting on suggestions as to whether i need to call a pool person to come and check this or if it is something i can do with your help? i have an inground pool. thanks!!

[Watermom]

Did you get your problem solved?

[Poconos]

Looks like two possibilities. If the breaker is a GFI then a high resistance to ground will trip it. This could be caused by a break in the insulation anywhere along the power line and dampness causing a leak to ground. Or it could be in the housing itself or the power supply if it has one. I think they're usually low voltage lamps. If it's a regular breaker then most likely a short. If you can disconnect anything start closest to the breaker and work your way to the pool to try and isolate where the problem lies. Not unusual for mice to chew through power lines.
Al