ERICO Practical Guide to Electrical Grounding - Manual (Page 21)

13 Chapter 1: Building and Service Entrance Grounding
Soil Backfill
Soil
4"
GEM
1"
4"
30"
Trench
GEM 1"
GEM
Ground Conductor
Soil Backfill
6"
GEM packed
around Ground Rod
3" or Larger
6" shorter than
Ground Rod
Augered Hole
Ground Rod 6"
12"
1
2
3
4
5
1
2
3
4
6
GEM Trench Installation
GEM Ground Rod Installation
Fig. 1-35
Grounding Book 4/14/99 10/5/99 6:01 PM Page 13 (Black plate)