Originally Posted by ChuckO
I thought that the neutral was to be bonded to the ground only at the main panel. Aren't you setting up a possible problem if any part of the brewery or the spa panel is grounded in some other way?
That is an accurate statement - however.
We are dealing with a 3 wire dryer outlet (in this case) or a 3 wire range outlet that was installed prior to the current NEC requirements. The 3 wire outlets are delivering 2 hots and neutral
to the device plugged into it - i.e. 120V/240V AC. Within the dryer or the range there is a bonding strap from the neutral to the equipment cabinet that is providing equipment ground at the appliance.
The GFCI setup I've illustrated is still using the same outlet and ground is being developed in a slightly different manner through the use of the GFCI breaker. It is legitimate and is in accordance with current NEC as there are no changes being made to the building wiring. Also, the neutral and the developed ground are not being bonded to earth in any manner.
Hope this helps.