Weatherheads Picture The weatherhead sits at the top of the meter loop and is the small device which the wires come out of. The weatherhead helps prevent rain and other weather related elements like hail and snow from going down the inside of the meter loop. It is common to also make what is called a drip loop with the ends of the service drop and meter loop conductors where they connect together near the weatherhead. The drip loop allows any moisture on the wires from rain or condensation to drip off rather than go down the meter loop.