875—91.7 (89) Electric steam generator.
	 91.7(1) A cable at least as large as one of the incoming power lines to the generator shall be permanently fastened to and provide grounding of the generator shell.
	 91.7(2) A suitable screen or guard shall be provided around high-tension bushings and a sign posted warning of high voltage. This screen or guard shall be so located that it will be impossible for anyone working around the generator to accidentally come in contact with the high-tension circuits.
	 91.7(3) All electrically heated boilers shall meet the applicable standards of the construction or installation code.