Conduits are power amplification systems. A level of amplification needs to be set before power is sent through it. The default is no power can pass though (dissipates into space.)
To set a level is an Engineering vs 8 for level 1 amplification. -3 to the
skill check for each extra level (i.e. 11 for two times amplification.) The
amplification level resets at the end of the round.
If the conduit is damaged, the amplification level resets to 0. Due to the
hazardous nature of conduits, they are at 1+power multiplier for damage when
hit. For example, level 3 power amplification is a +4 to damage.

