Manly yes but I like it too

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wyreman

Senior Member
Location
SF CA USA
Occupation
electrical contractor
So I know, but I don’t know
the code section,
That you need a continuous wire
from your meter
(Or meter main if a combo )
To your grounding electrode.
Which is normally Understood to be
the two ground rods
or the water entrance Cu pipe

And your supplementals
can bond from anywhere
to that primary electrode
with THE GEC back to the meter

Another words you can run a big wire
from the water entrance
to your meter
and then hang your ground rods
on that water pipe

Inspector keeps referring to
her requirement that
The ground rod has got to be
the last thing in the line.
I just want to make sure I’m not missing anything.
She likely wants the ground rods
To be the grounding electrode(s)
And the GEC
to be continuous back to the meter
From those rods

and then we can hang The bond to the
water pipe on the nearest Rod?

We always used the cold water
As the main electrode
& that wire back to the meter
from the water pipe
as the grounding electrode conductor

And then we would hang the rods
on the water pipe
Looks like she wants it
the other way
and she’s probably right
She’s pretty smart

& the bonding wires just have to be
number six but I always
Chose number four for the GEC

Also I was at the
good supply house and I only saw 5/8 Rod
I have an old half inch that’s ul listed

there going to be some new requirements
where listed 1/2” not allowed??


Thanks guys!



https://1drv.ms/i/s!AkuU8mYuf3eEiQZ966JTJ_SiSni3

Manly yes but I like it to
https://youtu.be/sQk-imB1m2k
 
Last edited:

Jim1959

Senior Member
Location
Longmont, CO
NEC 250.52 A
(5) Rod and Pipe Electrodes. Rod and pipe electrodes shall
not be less than 2.44 m (8 ft) in length and shall consist of the
following materials.
(a) Grounding electrodes of pipe or conduit shall not be
smaller than metric designator 21 (trade size 3⁄4) and, where of
steel, shall have the outer surface galvanized or otherwise metalcoated
for corrosion protection.
(b) Rod-type grounding electrodes of stainless steel and
copper or zinc coated steel shall be at least 15.87 mm (5⁄8 in.) in
diameter, unless listed.


So if you have a listed 1/2", it should be acceptable, however I've always seen 5/8" or 3/4".

there are many acceptable scenarios for connecting the grounding electrodes, they can daisy chain as long as the GEC is as large as the largest required per any of the electrodes, or you could run to the water pipe with the properly sized GEC, then connect a #6 CU to extend to the ground rod.
 

tom baker

First Chief Moderator
Staff member
The GEC is unspliced to the first ground rod. From the first ground rod to the second is a bonding jumper.
Some inspectors want to see one wire and two clamps but the code is very clear it can be two wires and three clamps
 
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