 Though the initial cost of constructing a 12/3 stage pin extension cable is higher than simply purchasing an equivalent Edison extension cable, the maintenance costs of the former are ultimately lower for several reasons.To begin with, less maintenance will be required as a result of the more rugged construction.When maintenance is required, many cable faults may be repaired by disassembling the connector, replacing broken components with spares acquired by cannibalizing other broken connectors, trimming away defective sections of cable, and reapplying the connector to the cable.