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2008 NEC 2008 NEC made substantial changes to: • Article 280 (Surge Arresters, over 1kV) • Article 285 (SPDs, 1kV or less) Surge Arresters traditionally used in Lightning Protection are moved from Article 280 to Article 285. Article 285 is effectively a mix of 2005 NEC & UL 1449 THIRD Edition Copyright © 2009 Advanced Protection Technologies (800) 237-4567 6
UL 1449-3 & 2008 NEC Art 285 Surge Arresters SPD TVSS • Surge Arrester SPDs now safety & performance tested • Unaware of existing SA that meets 1449-3 & UL 96A • ≈99% of existing SA’s become obsolete • 2008 NEC Art 285 changed based on 1449-3 • Requires SCCR • Major huge expensive big deal to surge manufacturers • Bid Specifications become obsolete as product evaluation & ratings change Copyright © 2009 Advanced Protection Technologies (800) 237-4567 7
Page 1 and 2: Advanced Protection Technologies Pr
Page 3 and 4: Advanced Protection Technologies (A
Page 5: UL 1449 THIRD Edition Combines TVSS
Page 9 and 10: UL 1449-3 & 2008 NEC Art 285 • Ch
Page 11 and 12: UL 1449-3 Performance Test Format C
Page 13 and 14: 2008 NEC Art 285 Copyright © 2009
Page 15 and 16: Simplifying Suggestions: (Why? on n
Page 17 and 18: Suggestions & Why (3 of 3): • Sel
Page 19 and 20: APT Here to Help: (800) 237-4567
Page 21 and 22: What Is a Surge/Transient? • High
Page 23 and 24: Metal Oxide Varistor - MOV SPD Buil
Page 25 and 26: SPD Connector Leads • Need short
Page 27 and 28: SPD Terminology • Surge Current -
Page 29 and 30: MOV/SPD Failures • MOVs are Varia
Page 31 and 32: UL 1449 Performance Rating: • Pre
Page 33 and 34: 2008 NEC - Key Points SCCR labeling
Page 35 and 36: Grounding/Bonding TVSS/SPDs • Bet

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