If you connect a generator to your home’s main electrical panel when the power goes out, you need to make sure the main breaker is shut off. Otherwise, when the power comes back on, you (or the ...

1 Draw a rectangle of 80 x 45mm on the cardboard and cut it out with your craft knife. Cut a slot of 40 x 5mm out of the middle, as in the photo. 2 Multiply the width of the cardboard template by five ...