Deals with the safety of electric room heaters for household and similar purposes, their rated voltage being not more than 250 V for single-phase appliances and 480 V for other appliances. Examples of appliances that are within the scope of this standard are convector heaters; fan heaters; heaters for use in greenhouses; liquid-filled radiators; panel heaters; radiant heaters; tubular heaters; ceiling mounted heat lamp appliances. For extraction fans of ceiling mounted heat lamp appliances, IEC 60335-2-80 is applicable as far as is reasonable.