This is the link to the reports. There are three parts.
pfeiffer fire report on cause
Here is the general link to the LPNF. Will add the specific link when I get a moment.
LOS PADRES NATIONAL FOREST HOME PAGE
Forest Service Releases Cause of Pfeiffer Fire
GOLETA, CA, December 3, 2014….U.S. Forest Service officials today announced the release of the Pfeiffer Fire investigation report which determined the cause of the fire to be a local water company’s electrical control wires creating a competent ignition source.
All other fire causes were investigated and excluded.
The Pfeiffer Fire began just before midnight December 15, 2013, on the Pfeiffer Ridge in Big Sur and eventually burned 917 acres.
The investigation report is accessible to the public on the Los Padres National Forest Internet website.