stryped wrote:


Thanks for all of the advice. That is why I post on here. You guys
came up with that when no on ein the electrical enginnering forum did.

Probably because most engineers never deal with this.

I will move the wires but I did verify with a continuity meter that
the left bank has continuity to the enclsure. It even says "ground
strap" on it. The left bank says "neutral strap" and doe not have
continuity to the cabinet.

Someone said I need to remove the screw to isolate where I have the
grounds now to the cabinet. Will the inspector be ok with this?

Probably not, but that will depend on your local code.
If it gets treated as a separate service, he (or she) will NOT be
happy.
If it gets treated as a sub panel from your house service (or
wherever) he will require that it be removed.

IF the building is treated as per 250.32 of the NEC (as it should be
for a US installation) then

"250.32 Buildings or Structures Supplied by Feeder(s) or Branch
Circuit(s)
(A) Grounding Electrode Building(s) or structure(s) supplied by
feeder(s) or branch circuit(s) shall have a grounding electrode or
grounding electrode system installed in accordance with 250.50. The
grounding electrode conductor(s) shall be connected in accordance with
250.32(B) or (C). Where there is no existing grounding electrode, the
grounding electrode(s) required in 250.50 shall be installed."

Exception: A grounding electrode shall not be required where only a
single branch circuit supplies the building or structure and the
branch circuit includes an equipment grounding conductor for grounding
the conductive non–current-carrying parts of equipment. For the
purpose of this section, a multiwire branch circuit shall be
considered as a single branch circuit.

(2) Grounded Conductor Where (1) an equipment grounding conductor is
not run with the supply to the building or structure, (2) there are no
continuous metallic paths bonded to the grounding system in each
building or structure involved, and (3) ground-fault protection of
equipment has not been installed on the supply side of the feeder(s),
the grounded conductor run with the supply to the building or
structure shall be connected to the building or structure
disconnecting means and to the grounding electrode(s) and shall be
used for grounding or bonding of equipment, structures, or frames
required to be grounded or bonded. The size of the grounded conductor
shall not be smaller than the larger of either of the following:
(1) That required by 220.61
(2) That required by 250.122

"

The short version of this is if you run a ground conductor with your
feeder to this panel, You bond it to the local ground, AND the N-G
bond in your panel gets removed.

If you do NOT run a ground conductor, then your ground electrode gets
bonded your panel ground bus, and your Neutral gets bonded to your
panel ground bus.





Also, I plan on using 10-3 wire and installing a 30 amp recepticle for
a futre air compressor. Also a 50 amp wire for my lincoln buzz box. Is
it ok to put both those double pole breakers on the same side of the
panel as my 100 amp main? Or will that be some type of "imbalance"?

No, for a single phase (120-240) panel alternating breakers are on
alternate source phases. A,B,A,B,A,B going down the panel


jk

Stuart Wheaton wrote:


I also don't see a grounding wire going to a ground rod.


The sole ground rod should be at the service entrance panel.
Depending on the installation the NEC requires additional ones for
separate buildings, in some cases.

Multiple
rods can create ground loops.
When improperly installed.


jk