An insulated electrical conductor used to provide an electrical connection between a cardiac tissue ablation system generator and the operative ablative device (e.g., a dedicated cardiac tissue ablation system applicator or a catheter). Its length may also allow the operative ablative device to remain in the sterile field. The electrical conductor is typically made of robust materials with metal connectors [e.g., gold (Au) plated electrical connecting pins and sockets] for reliability. This is a reusable device.