41 chapter 2: building lightning protection – ERICO Practical Guide to Electrical Grounding User Manual
Page 49
41
Chapter 2: Building Lightning Protection
Fig. 2-45
Structural steel may be used as the conductor if
properly bonded.
Fig. 2-46
Air terminal placement on ridged roofs vary with
ridge height in relation to the other ridges.
A
A
A
A
A
A
B
B
Ridge Higher
Than Outer Ridge
Ridge Equal To
Or Lower Than
Outer Ridge
Close ( 20' Or 25') Spacing
50' Spacing
Air Terminal Spacing On Roofs With Multiple Ridges
Fig. 2-42
Concealed systems are common on residential
installations.
#2/0
CADWELD
Connection
Finished Roof
24 Inch
Maximum
Fig. 2-43
Detail of air terminal with the steel structure used
as the down conductor.
Fig. 2-44
Detail of air terminal with the steel structure used
as the down conductor.
Finished Roof
#2/0
Silicone Sealant
CADWELD Connection
Grounding Book 4/14/99 10/5/99 6:01 PM Page 41 (Black plate)
- 6Z34VF14 Rod Hanging Basket Tray Clip (1 page)
- 766PM Far Side Box Support (1 page)
- 766PMD Far Side Box Support (1 page)
- CADDY MPVTI Low Voltage Mounting Clip (2 pages)
- H-Series CADDY PYRAMID Support System (3 pages)
- CADDY PYRAMID RL, PIPE RETAINERS (2 pages)
- CADDY PYRAMID Rooftop Equipment Support (4 pages)
- CADDY PYRAMID Single Post Support (1 page)
- CADDY PYRAMID TF Series, Fixed Height Tool-Free Supports (2 pages)
- CADDY ROD LOCK Anchor Screw (2 pages)
- CADDY ROD LOCK Beam Clamp (2 pages)
- CADDY ROD LOCK Channel Nut (2 pages)
- CADDY ROD LOCK L-Bracket (2 pages)
- CADDY ROD LOCK Strut (2 pages)
- CADDY SPEED LINK Riveted Accessories (4 pages)
- CADDY SPEED LINK SLK-Keyless Locking Device and Bulk Cable (2 pages)
- CADDY SPEED LINK SLK-Keyless Locking Devices (2 pages)
- CADDY SPEED LINK-Accessory Cables (1 page)
- CADDY SPEED LINK-SLK Cable End Accessories (4 pages)
- TSGB Series Screw Gun Bracket (2 pages)
- GLIDER Electrical Box Attachment (2 pages)
- H Series-Electrical Box Bracket (2 pages)
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- ROD LOCK Strut End Bracket (2 pages)
- ROD LOCK Strut (2 pages)
- CADDY ROD LOCK Strut Nut (2 pages)
- CER4 Cable from Stud (2 pages)
- High Performance CADDY CAT HP J-Hook Assemblies (6 pages)
- KBT Wire Basket Tray Clip (1 page)
- MPCB1220 (2 pages)
- SBC Series, Beam Clamp, 3/8" and M10 (1 page)
- TSR200 Telescoping Strut Replacement Bracket (2 pages)
- TSRBS1625 Telescoping Box (3 pages)
- Universal Pedestal Clamp (2 pages)
- Branch Line Restraint Device (2 pages)
- Branch Line Restraint Strucural Attachment Fitting for Steel 12 gauge (2 pages)
- Branch Line Restraint, Structural Attachment Fitting for Concrete or Wood (2 pages)
- Branch Line Restraint, Structural Attachment Fitting with 3/8"-16 male thread" (2 pages)
- 510 CADDY EZ RISER (2 pages)
- 429 CADDY MACROFIX PLUS NI (1 page)
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- CADDY PYRAMID Equipment Supports (3 pages)
- CADDY ROD LOCK Bottom-Mount Duct Bracket (2 pages)
- Bottom-Mount Duct Bracket, Narrow (2 pages)
- Top-Mount Duct Bracket (2 pages)