On Feb 6, 2:26*pm, "Ralph Mowery" wrote:
Several of us have been looking over the grounding requirements for a house.
Can not find in the code if the ground wire from the house to the ground rod
has to be solid or can it be stranded. *Also insulated or not insulated.
The standard practice seems to be solid, uninsulated wire in the area, but
does the code state that anywhere ? *All we can find is the size and it must
be ran in as direct as possiable.

No. 4 solid uninsulated copper is the defacto and is carried on most
utility company trucks. The reason No. 4 is used is because it can be
run open where not subject to physical damage without a raceway.
A No. 6 generally has to be installed in a raceway..

REF:
310.3 Stranded Conductors. Where installed in raceways,
conductors of size 8 AWG and larger shall be stranded.
Exception: As permitted or required elsewhere in this Code.
250.64
(B) Securing and Protection Against Physical Damage.
Where exposed, a grounding electrode conductor or its enclosure
shall be securely fastened to the surface on which it is
carried. A 4 AWG or larger copper or aluminum grounding
electrode conductor shall be protected where exposed to
physical damage. A 6 AWG grounding electrode conductor
that is free from exposure to physical damage shall be permitted
to be run along the surface of the building construction
without metal covering or protection where it is securely fastened
to the construction; otherwise, it shall be in rigid metal
conduit, intermediate metal conduit, rigid nonmetallic conduit,
electrical metallic tubing, or cable armor. Grounding electrode
conductors smaller than 6 AWG shall be in rigid metal conduit,
intermediate metal conduit, rigid nonmetallic conduit,
electrical metallic tubing, or cable armor.