A cable network and a method for protecting the cable network against a serial
arc are disclosed. In particular, a 42 V vehicle network for a motor vehicle is
contemplated. The cable network includes a supply line connecting a voltage source
and a load. The supply line includes two cable runs that are connected in parallel.
Each of the cable runs contains a fuse therein. In the event of a cable defect
in one (first) of the cable runs, all of the current flows via the other (second)
cable run. This prevents an arc from being formed at the cable interruption in
the first cable run. The fuses are preferably in the form of electronic components,
which positively disconnect one another as soon as one component is activated due
to a fault.
