I have an electric cable running into my garage and it feeds an old two way board which has two 15amp fuses. In the garage there are two freezers, one tumble dryer as well as lighting. It also feeds the outside security light. When the electrics blow the fuses are intact so can anyone tell me what could be the cause? I know I need to upgrade the board but is it that the two 15amp fuses are not enough? Oddly enough this has happened a few times then it comes back on.