I have some christmas lights that I have out front on the lawn there are about 1500 lights total and plug into one big cord that comes up to the porch and I plug into the outlet up there, every time I plug them in at night it blows the outlet where you have to press it back in. During the day when I am working on the lights they come on and stay but lately at night they blow. The humidity around here keeps everything damp but it is the same in the day. Some of the lights touch the grass and I have tried to put them up where they are straight and not touching the grass. Please help