| 摘要 |
An electrical power distribution panel such as is typically used in automobiles provides for the connection of an accessory circuit to one of two power busses within the panel. One power buss may be energized at all times by direct connection to the battery, while the other power buss may be energized when an ignition switch is in either the "on" or "accessory" position. Selection of the buss which is connected to an accessory circuit is made by placement of the fuse for that accessory circuit so as to connect one or the other busses.
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