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It's not the organisations that are responsible for the different ratings but the standards tested to. An appliance power switch may be tested to UL1054 for sale in the USA and to EN 61058 for sale in Europe. Both standards call up different test methods and ratings. You may have noticed...

If there is one this that IEC standards are sorely lacking that is rationales and justifications. I suspect it was lobbying by manufacturers but I can't be sure. Maybe some manufacturers of some portable appliances didn't like the less flexible 1.0 or 1.5mm2 cables on their appliances so the...

According to IEC 60335-1, which a fan heater should be tested to, 0.75mm2 supply cords are allowed for appliances with a current rating less than or equal to 6A. However, a portable appliance (like a fan heater), is allowed to use a 0.75mm2 supply cord for a current rating up up 10A, provided...

The bottom one looks like an Adax Neo convector heater. It has ventilation slots on the rear which can get quite hot. It needs 150mm between the top of the heater and any shelf above. I know because I tested it... :wink:

The elements of convector panel heater get very hot, in excess of 200C. The ventilation slots on the top of the heater can get to over 100C. According to EN 60335-2-30, the maximum temperature rise for a shelf fixed above a panel heater is 60K (about 85C absolute). Most panel heaters need a...