ERICO Practical Guide to Electrical Grounding - Manual (Page 51)

43 Chapter 2: Building Lightning Protection
Ground Grid
Dead End Clamp
Shield Wire
Lightning Mast
TA Connection
CADWELD Type
Or Type PB Connection
PC Connection
CADWELD Type
(Prefab)
VB Connection
CADWELD Type
VV Connection
CADWELD Type
Attach Grd. Wire
To Col. Leg @
Max 10" Spacing
Fig. 2-53
Steel tower lightning masts and shield wires may
be used in locations such as electrical substations.
Fig. 2-52
Connections to air terminals may be CADWELD welded connections.
Bare Copper
Point 20' Max.
Spacing
Cast Bronze
Adhesive Point Base.
Secure With Adhesive.
Main Copper Conductor Main Copper Conductor
When Used As
Midroof Air
Terminal.
50' Maximum
Spacing
CADWELD Type
GY Connection
NOTE: Actual point base to be
determined by field conditions
Flat Copper Cable Holder.
Secure With Adhesive
CADWELD TypeGS
(Prefab) or GC
CADWELD
Type PC
Alternate Method
Bond
Fig. 2-54
Basic lightning protection on a small building consisting
of air terminals, down leads and ground electrodes.
Fig. 2-55
The lightning protection system must be bonded to
the electrical grounding system.
Grounding Book 4/14/99 10/5/99 6:01 PM Page 43 (Black plate)