By William Roller | Staff Writer Traffic slowed for a “cone zone” along the 400 block of Sutton Way in Grass Valley Tuesday, allowing Pacific Gas & Electric to install generators at the Brunswick substation. Motorists sometimes stopped or slowly weaved through a brief maze of orange, plastic cones as flaggers from Donohoo Temporary Traffic Control guided drivers safely through the work area while generators were unloaded from a flatbed truck. The generators were to support any Public Safety Power Shut-off operations that could be implemented during the wildfire season, said Megan McFarland, PG&E spokesperson. “Traffic will return to normal sometime (Tuesday) afternoon and the work will continue Wednesday,” said McFarland. “But the work will not impact traffic patterns.”