The screw down test clamp allows easy access to copper conductors where frequent inspection or testing may be necessary, the heavy-duty lid simply screws on and off the base, and the clamp is so simple to unassemble it should not be used at ground level or anywhere within easy reach of the public.  

The screw down test clamp allows easy access to copper conductors where frequent inspection or testing may be necessary, the heavy-duty lid simply screws on and off the base, and the clamp is so simple to unassemble it should not be used at ground level or anywhere within easy reach of the public.