  We present numerical measurements of the critical correlation length exponent
nu in the three-dimensional fuse model. Using sufficiently broad threshold
distributions to ensure that the system is the strong-disorder regime, we
determine nu to be nu = 0.86 +/- 0.06 based on analyzing the fluctuations of
the survival probability. The value we find for nu is very close to the
percolation value 0.88 and we propose that the three-dimensional fuse model is
in the universality class of ordinary percolation.
