ERICO Practical Guide to Electrical Grounding - Manual (Page 118)

Following are fence and gate grounding details which may
be helpful. (Fig. 6-52, 6-53 and 6-54)
Various styles of clamps are available for fence post
grounding and for gate and gate post bonding and
grounding. (Fig. 6-55) Various styles of welded connections
are available for gate bonding and gate post grounding,
including a combination of welds and a clamp where the
gate must occasionally be removed. (Fig. 6-56)
Both the Canadian Electrical Code (36-312 [4]) and the
NESC (92 E [4]) require that the barbed wire above the
fence mesh at a substation to be grounded. ERICO
recommends that the connections to the barbed wire use
split bolt connectors. (Fig. 6-54)
Fence posts come in a variety of sizes and shapes.
(Fig. 6-57)
110 Practical Guide to Electrical Grounding
Steel Line Or
Corner Post
CADWELD Type
VS Or VB
Ground Wire
(3 Feet Outside
Of Fence Typical)
CADWELD Type TA
CADWELD Fence
Post Clamp
Alternate For Aluminum
Or Thin Wall Steel Posts.
Note: It is not necessary to
connect to the fence fabric or
top rail (Except in Canada)
if the posts are of a
conducting material.
(Ref: NESC 92E5&6)
Fig. 6-52
Typical construction drawing detail showing fence
line and corner post grounding.
Fig. 6-55
Perimeter Ground
Cable
(Outside Fence)
CADWELD
Type TA (Typ)
CADWELD Type TA (Typ)
Ground
Leads
Notes:
1. Perimeter ground bus to be 4'-0" from fence line. Connect to bus inside fence at 50'-0" Max.
2. Bottom of fence and gate fabric must not be more than 2" above finish grade.
3. Ground all corner and gate post. Fence posts shall be grounded at 50' Maximum intervals.
4. Fences and facilities not owned must not be attached to substation fence or ground
system unless specifically required by engineering.
Gate Post
Gate
Swing
(Typ)
48" Min.
(Typ)
Substation
Ground Grid
(Inside Fence)
Fig. 6-53
Typical construction drawing detail showing gate
and gate post grounding.
Splitbolt
CADWELD
Type VG
Fig. 6-54
Fig. 6-56
Fig. 6-57
Grounding Book 4/14/99 10/5/99 6:02 PM Page 110 (Black plate)