"Greg" wrote in message
...
May I ask your source of that information? I would like to verify it.

The National Electric Code 406.3(D)(3)

3) Nongrounding-Type Receptacles. Where grounding means does not exist in
the
receptacle enclosure, the installation shall comply with (a), (b), or (c).
(a) A nongrounding-type receptacle(s) shall be permitted to be replaced
with another nongrounding-type receptacle(s).
(b) A nongrounding-type receptacle(s) shall be permitted to be replaced
with a ground-fault circuit interrupter-type of receptacle(s). These
receptacles shall be marked "No Equipment Ground." An equipment grounding
conductor shall not be connected from the ground-fault
circuit-interrupter-type
receptacle to any outlet supplied from the ground-fault
circuit-interrupter
receptacle.
(c) A nongrounding-type receptacle(s) shall be permitted to be replaced
with a grounding-type receptacle(s) where supplied through a ground-fault
circuit interrupter. Grounding-type receptacles supplied through the
ground-fault circuit interrupter shall be marked "GFCI Protected" and "No
Equipment Ground." An equipment grounding conductor shall not be connected
between the grounding-type receptacles.


I'm sorry, but there can be no debate of a subject such as this in the
vacuum of one short section of the overall code. As in any technical
regulation, the entire context of all related sections and paras must be
considered. Everything here is true: but it is not in complete context
without the remaining relevant components of the regulation. To be
complete, every relevant section/para must be considered. Then, and
probably more importantly, local codes must be considered; the NEC is only a
starting point and a good reference. It is not the final word as it may
(and often is) much more lenient than local codes.
You cannot wire simply to the NEC.

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