To summarize this and other posts, even though both safety
ground and neutral are connected together at one end, they are
not electrically same at their other ends. Wire is an
electrical component - not a perfect conductor and not a
conductor that never breaks. At the load end, those wires
have electrically different characteristics because wire is
neither perfect nor reliable conductor. At the load, the
safety ground wire and neutral wire are electrically
different. Safety ground and neutral wires must share a one
common point at the mains disconnect. Everywhere else, those
two wires must be considered electrically different.

Calvin Henry-Cotnam wrote:
Takoma Park Volunteer Fire Department Postmaster )
said...

Yes, that is a definate and very serious reason for bonding equipment
with a separate, non-current-carrying, conductor.

However, the frequency of this occurring is relatively small (but not
insignificant). While the possibility of a neutral-bonded chassis sitting
at a volt or two above ground is somewhat higher (as in, it will be true
when the item is drawing a load, as well as when something else on the
same circuit is drawing a load). For the most part, this will not likely
pose a dangerous situation, but the potential is there -- it only takes
a few milliamps through the heart to be fatal.