The law requires that you clear a firebreak around the burning site and have the right equipment available to keep the fire under control. You must also stay with the fire until it is completely safe.
For Residential Yard Debris Burning in Bamberg County, call 1-800-895-7060. For questions concerning burning inside the city limits of any municipality in Bamberg County, you must call the town hall of that municipality.
S.C. Forestry Commission: http://www.state.sc.us/forest/