California Code of Regulations
Title 19 - Public Safety
Division 1 - State Fire Marshal
Chapter 10 - Explosives
Subchapter 5 - Construction
Article 17 - Electrical Requirements
Section 1580.2 - Electrical Supply-on-Site (Field Operated) Mixed Water Gels

If electric power is used it may be furnished by cable from an outside source or by a self-contained motor generator. In the case of a self-contained power source, it shall be located at the end of the storage container opposite that at which the blasting agent is discharged. The power source shall have adequate capacity for the loads to be expected and it shall be equipped with overload protection devices in accordance with the provisions of Sub-Article E 430-C, Part 3, Title 24, California Administrative Code.