Practical guide to electrical grounding – ERICO Practical Guide to Electrical Grounding User Manual
Page 62
Practical Guide to Electrical Grounding
54
Fig. 3-8
Fig. 3-9
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Masonary Anchors
For Mounting Bolts
ERICO Insulator and Mounting Bracket
(Includes Insulator Mounting Bolts
And Assembly Washers)
Copper Bus Along Wall
CADWELD Type LJ Connection -
Cable To Bus
Insulated Or Bare Copper
Conductor To Below Floor
Ground Grid
Insulated Or Bare Copper
Conductor To Ground Grid Via
1" Dia. PVC Sleeve In Floor Slab
Copper Ground Conductor
CADWELD
Type GR or GT
Ground Rod
Beyond Roof
Drip Line,
18" Minimum
Underfloor Ground Grid Detail
1" PVC Sleeve Thru Wall
Slope @ 1/4" Per Foot
Ground Grid #6 AWG Solid Copper
Conductor @ 24" x 48" Centers.
Use CADWELD Connections
At Each Intersection Or Use
ERICO Prefabricated Wire Mesh
On 24" x 48 " Centers
Min. 12" From Wall Around Entire
Perimeter Of Building
CADWELD PT Connection To Grid
Interior Floor Slab
Steel
Angle Or
Column
CADWELD
Connection
Copper Bar
Minimum
Copper
Mold
Weld
Width Of
Bar Size
Part No.
Metal
Steel
1/8 x 1
DFCCE*
#115
3”
1/4 x 1
DFCEE*
150
3”
1/4 x 2
DFFEH*
2-200
4”
1/4 x 3
DFFEK*
500
4”
1/4 x 4
DFFEM*
3-250
4”
*Add RH or LH for right or left hand right hand shown.
Grounding Book 4/14/99 10/5/99 6:01 PM Page 54 (Black plate)