Historical
IEC 60335-2-31 Ed. 4.0 b:2005
Household and similar electrical appliances - Safety - Part 2-31: Particular requirements for range hoods
"Deals with the safety of electric range hoods intended to be installed above household cooking ranges, hobs, and similar cooking appliances, their rated voltage being not more than 250 V."
International Electrotechnical Commission [iec]