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.
Cal. Code Regs. Tit. 19, § 1580.2