Hello, last year I had a professional electrician come out and install landscaping lights for our home. Everything has been great until a few days ago. I keep blowing one of my fuses on the transformer itself after the lights are on for a few hours. I haven't changed any bulbs to higher wattage and have not dug anything up causing a break in the line. When the lights are lit prior to the fuse blowing, they are all on and bright. Any ideas on what might be causing the issue and troubleshooting ideas? Thanks in advance!