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Page 189

| Figure 10-12 Cut-out disconnect. |

| Potheads |

| Disconnecting potheads are customarily used whenever the conductors of an underground cable are connected to overhead conductors (Fig. 10-13). They are essentially single-pole disconnects whose contacts are usually totally enclosed in porcelain when the circuit is closed. They are used whenever the currents to be broken are relatively small. Although obsolete, many will remain in service for a long time. |

| Clamps |

| Several types of clamps, especially so called hot-line clamps, are sometimes used as disconnects, their purpose and operation being essentially the same as those of disconnects (Fig. 10-14). |

| Jumpers... |

| Jumper cables, with clamps at either end, are designed for other purposes but can be used incidentally for performing a disconnecting function. Usually handled at the end of insulating wooden or plastic hot-sticks (similar to switch sticks), they must be manipulated with extreme care (Fig. 10-15). |

| The current that may be interrupted by these devices is very much smaller than that which can be managed by other disconnecting devices designed specially for such a purpose. |

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