IEC 60212:2010-Standard conditions for use prior to and during the testing of solid electrical insulating materials, IEC 60335-2-91:2008-Household and similar electrical appliances-Safety-Part 2-91: Particular requirements for walk-behind and hand-held lawn trimmers and lawn edge trimmers, IEC 60464-3-1:2001/AMD1:2006-Amendment 1-Varnishes used for