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Equipment must be installed and used according to instructions on the labeling or listing. The manufacturer's name, trademark or other identifiable marking is required on all electrical equipment. The voltage, current, wattage, or other ratings should also be included as necessary. Unless it is specifically identified for use in a certain environment, equipment cannot be located where it can deteriorate from exposure to moisture, gases, vapors, liquids, or excessive temperature. Completed wiring cannot have short circuits or grounds. And any splices must be done with appropriate splicing devices or by brazing, welding, or suturing them together. All splices and conductor ends must be insulated.