Why did my CMEP-OL arrive without an electrical plug?
To meet the criteria of “explosion-proof,” our CMEP-OL pump is able to contain any explosion originating within its housing. This prevents sparks from within its housing from igniting vapors, gases, dust, or fibers in the air surrounding it. The CMEP-OL also meets international explosion-proof standards as it is additionally designed to be hard-wired into your power system to avoid any possible spark created when plugging-in and unplugging it. Please note that the blue wire is the ground wire, the black wire is the hot wire, and the brown or purple wire is your neutral wire.