All Barefoot Connections™ products come with a 15-foot Connection Cord that connects Barefoot Connections™ products to the Earth Tap. The Connection Cord contains a built-in series resistance designed to limit any potential current a person might come in contact with. The 1 megohm resistor in the Connection Cord meets UL ESD standards for personal grounding systems. No other type of cord should be used with any of the Barefoot Connections™ products.