Lightning Protection Solutions ERITECH® SYSTEM 2000

ERICO is a leading global designer, manufacturer and marketer of precision-engineered specialty metal products serving niche markets in a diverse range of electrical, construction, utility and rail applications. The company is headquartered in Solon, Ohio, USA with a network of sales locations serving more than 30 countries and with manufacturing and distribution facilities worldwide. ERICO’s well-known brand names include: CADDY® electrical and mechanical xings, fasteners and supports; CADWELD® welded electrical connections; ERICO® rail and industrial products; ERIFLEX® low-voltage power distribution;...

Table of Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 The Need for Lightning Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8 Isometric View of Cable Lightning Protection Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Typical Installation Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

Facility Electrical Protection Products The Six Interdependent Disciplines that form the Protection Plan are: Lightning protection, grounding, equipotential bonding and surge protection are all interdependent disciplines and the focus of the ERITECH® brand of facility electrical protection products from ERICO. Reliable protection of structures, industrial and commercial operations and personnel demands a systematic and comprehensive approach to minimizing threats caused by transients. For instance, no air terminal can safely capture and arrest the lightning energy without a dependable route to...

he Need for Lightning Protection There is no known method of preventing the occurrence of a lightning discharge. The purpose of a lightning protection system, therefore, is to control the passage of a discharge in such a manner that prevents personal injury or property damage. The need to provide protection should be assessed in the early stages of the structure design. Although no strict rules can be given, it is possible to use broad guidelines to arrive at the degree of protection required. Critical Factors to be Considered: 1. What is the risk to personnel? 2. What is the risk of equipment...

The Need for Lightning Protection Storm Development and Natural Ionization A thunderstorm commences with the development of a cumulonimbus thunder cloud. The cloud is typically formed by rapidly rising humid air which becomes electried due to convection and precipitation effects. This is accompanied by wind speeds of up to 125 miles/hr. Within the connes of the cloud, static electricity builds to an extent where one or more neutralizing discharges or ashes occur. These ashes can be in the form of an inter-cloud (cloud-to-cloud), intra-cloud (within cloud) or cloud-to-ground ash. The end result...

The Need for Lightning Protection Figure 3. Electric field plot of a real structure in an ambient field, showing that the intensification is high at the corners, moderate on the horizontal and upper vertical edges and very low on flat horizontal and vertical surfaces. Figure 5. Upward leaders propagate toward downward leader to complete the ionized path between cloud and ground. Stepped leader moves progressively from cloud to ground and can follow one or several paths. Figure 4. Electric field due to downleader increases to the point of initiation of an upward leader.

The Need for Lightning Protectio egative cioua-io- ground lightning Figure 6. Negative doud-to-ground lightning. Figure 7. Positive doud-to-ground lightning. Negative and positive doud-to- ground lightning typically occurs to an approximate ratio of 90:10. Typically, 90% of cloud-to-ground flashes transfer negative charge (negative lightning), as shown in Figure 6. Such a flash consists of a sequence of one or more high amplitude, short duration current impulses or strokes. The subsequent strokes are sometimes called A small proportion of flashes transfer positive charge to ground (positive lightning),...

Isometric View of Cable Lightning Protection Layout Legend Air Terminal Location No. LPC126 Copper Ground Loop Conductor (Min. Class II Cable) Through Roof Connection Location No. LPA141 Aluminum Secondary Bonding (#4 AWG) Through Wall Connection Location Misc. Mechanical Equipment Through Roof Cable to Steel Connection Vent Through Roof Roof Drain No. LPC126 Copper Cable (Min. Class II Cable) Above Finished Grade No. LPC151 Copper Secondary Bonding Wire (#6 AWG) Note: The lightning protection materials to be used for this type of installation may be aluminum or copper, within the allowances...

Typical Installation Drawings Typical Parapet Air Terminal Typical Mid-Roof Air Terminal Point Point to extend a minimum of 10” above top of parapet. Adhesive type cable holder Cable Fastener Adhesive type point base Point Base Typical Air Terminal Placement at Outside Corners Typical Top Mount Air Terminal Point Loop type masonry cable anchor Point base Typical Concealed Downlead to Lower Roof Typical Tri-Pod Mid-Roof Air Terminal Point (>24” high) 1” PVC conduit Terminal bonding lug Adhesive type tripod holder Adhesive type cable holder Adhesive type point base Secondary bonding wire Parallel...

Typical Installation Drawings Typical Through Roof Connection Washer & nut Cable connection Flashing clamp Flashing collar Flashing boot Washer & nut Threaded rod, rod length determined by roof thickness Through roof cable connecting assembly, furnished with EPDM pipe ashing and 1/2” dia. x 18” all thread rod Washer & nut Cable connection Washer & nut Cast cable to steel bonding clamp 1” PVC conduit Typical Concealed Download to Grounding Connection Typical Steel Column Grounding Connection 1” PVC conduit Cast cable to steel bonding clamp Parallel combination cable splice Cast rebar bonding clamp...