2 or 3 prong plugs ungrounded

[handy10]

I understand the code requirement for replacing an ungrounded two prong receptacle with an appropriately marked three prong gfi receptacle.
My question is: suppose that a two prong is replaced with a three prong non-gfi receptacle which is marked "ungrounded." Is this configuration any
more dangerous than a two prong receptacle with a two prong cheater on a three wire cord?

 

[augie47]

Obviously no "electrical" difference.
I would, however, say "more dangerous" from the standpoint that, because of the Code requirement, we tend to accept the fact that any 3 wire (125v) outlet is "safer" as it is either GFCI protected or has equipment grounding.
When Mr Home Handyman goes to plug in his 3 wire cord he might actually search out a 3 wire outlet as opposed to a two wire with the expected realization that the 3 wire is somewhat safer.
(I would imagine a high percentage of the "no ground" stickers disappear soon after installation)

 

[jumper]

The 3-2 prong cheater is really supposed to be used with a two prong receptacle that the yoke and box is grounded by using metallic conduit as an EGC.

See 250.114 for cord connected equipment.

 

[jumper]

Obviously no "electrical" difference.
I would, however, say "more dangerous" from the standpoint that, because of the Code requirement, we tend to accept the fact that any 3 wire (125v) outlet is "safer" as it is either GFCI protected or has equipment grounding.
When Mr Home Handyman goes to plug in his 3 wire cord he might actually search out a 3 wire outlet as opposed to a two wire with the expected realization that the 3 wire is somewhat safer.
(I would imagine a high percentage of the "no ground" stickers disappear soon after installation)

Unless there is an inspection: How many stickers do you think are actually even used?

 

[Dennis Alwon]

Let's look at a senario. You replace a 2 prong outlet with a stand 3 prong. No equipment ground is present. Now I plug a 3 prong vacuum into the outlet and the motor shorts to the metal parts of the vac. The handle of the equipment is energized and now if we touch a grounded object it can ause serious injury.

Now same scenario with a gfci. Supposedly when you touch the grounded object the GFCI senses the current is not the same coming in as it is going out and trips.