For someone with no knowledge in electrical engineering, is there a way to check if a device is "grounded" (?) and safe to use?
It is not uncommon when shopping for appliances online (eg. lamps), mainly with those imported from China, to find reviews warning about a missing "grounding" and the associated dangers. The danger behind it seems to be that in the case of an internal failure, a live wire could come in contact with the metal chassis and electrocute the next person to touch the device. This also means that in a device built to safety specifications, there is some sort of failsafe guarding against this danger.
If one were to receive an electrical appliance with unknown safety mechanics and potentially missing/forged certifications, how could one reasonably check the product regarding safety?
Does this process differ depending on the outlet it's built for (US vs EU etc)?
Can this check be done without disassembling the device, wherein a layman could inadvertently destroy the safety features?