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by potmat
1060 days ago
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"Under the words 'Contact Position' there's a button that says 'Push to Close'". "Push it." When Spielberg was on he was ON! Who else could take a scene like "they have to reset the circuit breakers" and make you absolutely on the edge of your seat over it. |
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It turns out a lot of high-power circuit breakers need the energy from a clockwork mechanism in order to open in the event of a fault. So the thing where you have to pump the handle is actually to charge a clockwork mechanism to ensure there's enough mechanical energy to open in the event of a fault - AIUI. Presumably, the breaker is designed with safety in mind and won't let you push-to-close until you've done this.