I got a question about safety standards:
I'm designing a consumer device and I'm not sure whether I need an earth wire.
I have an AC-DC converter plug that outputs 5 V and up-to a maximum of 1 A current. This plug goes from NEMA 5-15P to a barrel plug.
The main device is made out of (exposed) metal.
At this level of voltage/current do safety standards require that I ground the enclosure to earth ground?