Our standard heavy duty, all rubber power cords (SJO) are the connecting link between the generator and the Gen/Tran transfer switch and/or the power inlet box. The 3- or 4-wire locking plug and connector match up with the power inlet on each transfer switch and power inlet box. Most portable generators are supplied with a locking receptacle that accepts the locking plug on one end of the power cord. All rubber cord stays flexible even in subzero temperatures!   These electric generator accessories help you connect your electric generator to your house and will isolate it from the power grid to prevent any dangerous back feed that could injure utility workers.  Call 1-800-421-3815 with any questions about accessories for your power generator.