ERICO Practical Guide to Electrical Grounding - Manual (Page 45)

37 Chapter 2: Building Lightning Protection
Fig. 2-26
The main conductor must never be
coursed upward.
Fig. 2-27
If a projection is over 40 feet on the three sides,
a downlead must be provided at (A) on both sides
of the projection.
Incorrect
Correct
If over 40 feet,
add down lead
at "A"
A
Correct
Pocket Or "V"
Incorrect
Fig. 2-24
Conductors must never be coursed upward.
Fig. 2-25
The conductor must never be coursed upward.
Pocket,
Incorrect Downlead,
Correct
Grounding Book 4/14/99 10/5/99 6:01 PM Page 37 (Black plate)