IEC 60079-14:2013/ISH1:2017

Intrepretation sheet 1 - Explosive atmospheres - Part 14: Electrical installations design, selection and erection

IEC 60079-14:2013

Explosive atmospheres - Part 14: Electrical installations design, selection and erection

IEC 60335-2-88:2002

Household and similar electrical appliances - Safety - Part 2-88: Particular requirements for humidifiers intended for use with heating, ventilation, or air-conditioning systems