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Page 214

| Figure 11-15 Three-shot fuse holder. |

| 1. Safety. Design, construction, and installation of fuses should afford the greatest practical protection to the operator and the general public. Not only should they be installed out of reach of the public, but the cut-outs and other appurtenances should be operated with auxiliary devices such as insulated switch sticks to ensure that an operator will not get too close to parts that may not be de-energized. They should also be located so that the flame and loud report associated with their operation do not frighten or harm the public. |

| 2. Interrupting capacity. The type and capacity of the fuse and mounting should be such as to interrupt the maximum short-circuit current that is likely to occur at the point of installation. A fuse and cut-out near a generating plant or source of electric power might have to handle a very large short-circuit current, whereas a fuse and cut-out in an outlying location might handle only relatively small currents. Because of economic considerations in purchasing and storing and because circuits are often rearranged, it may be prudent to select only a single mounting, one that will withstand the maximum short-circuit current. The correct fuse can then be installed in this mounting for each particular situation or application. |

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