The piercing clamp EH-P.2 ElectroHouse production company is used as a copper connector and wire reinforced or branches from the main line. The design applies stainless steel and polymers are not exposed to ultraviolet radiation protected against harmful influence of factors other than the moisture passing. The connection is made by means of an Allen key. Due to the special shape teeth clamp penetrates the hermetic insulation and makes contact with the conductors of copper, aluminum and other materials. It provides a secure connection. Mounting can be performed without de-energizing the power line, because a prolonged bolt insulated dielectric material at points of contact with the working surface and the housing part itself.