Re: Power supply w/o ground



JT wrote:

A small open-frame line powered power supply (Cincom CFM05S033) doesn't have
a ground connection. It will power a tiny device which only has +3.3V/0V DC
connections. This will be used in a 6x6x4 plastic enclosure so there is no
chassis ground. An electrician will be wiring it in.

Is this inherently unsafe? Do I need to find another supply with a ground?

Where did you expect to see a GROUND and why ?

Plenty of power supplies don't have them and don't need them. See Class II
insulation.
http://en.wikipedia.org/wiki/Appliance_classes

Graham



.

Relevant Pages

  • Re: Separation of RF board and microcontroller board caused problems
    ... Probably the ground trace on the flex isn't wide enough and now the ... power trace acts as a ground connection as well. ...
    (sci.electronics.design)
  • Re: Separation of RF board and microcontroller board caused problems
    ... Probably the ground trace on the flex isn't wide enough and now the ... power trace acts as a ground connection as well. ...
    (sci.electronics.basics)
  • Re: Power supply w/o ground
    ... have a ground connection. ... It will power a tiny device which only has ... This will be used in a 6x6x4 plastic enclosure ... If your device needs a real earth ground, ...
    (sci.electronics.basics)
  • Re: Power supply w/o ground
    ... Charles wrote: ... have a ground connection. ... It will power a tiny device which only has ... This will be used in a 6x6x4 plastic enclosure so ...
    (sci.electronics.basics)
  • Re: Power supply w/o ground
    ... have a ground connection. ... It will power a tiny device which only has ... This will be used in a 6x6x4 plastic enclosure ... Surely the Great Terrell can figure that out? ...
    (sci.electronics.basics)