NEC 2017 Changes and Their Effect Upon the ICT Industry · NEC 2017 Changes and Their Effect Upon the ICT Industry

NEC 2017 Changes and Their Effect Upon the ICT Industry

Today’s Presenters

• John Kacperski, RCDD, OSP, CDT– Chair of BICSI Standards– BICSI Representative on NFPA 70-CMP 16

• Richard S. Anderson, RCDD, CDT, CDCT, CIBET – BICSI Representative on NFPA 70-CMP 3

Before We Begin,Your BICSI Codes Subcommittee

Established 1986

Our Mission

• Monitor codes that affect the building & ICT communities

• Influence codes development as necessary to ensure safety while minimizing undue requirements

Who We Are

• Volunteer BICSI members who willingly give of our time and resources

• Interested parties from all perspective of the ICT industry

What We Do

• Initiate input into certain specific national and international codes development processes.

• Provide BICSI's collective perspective• Serve as an information resource to BICSI

membership and volunteer activities

Who We Monitor

• NFPA – NFPA 70, 72, 75 and more

• Canadian Standards Association (CSA)– CSA C22.1, CEC

• BSI

• IEEE– IEEE C2, NESC

• OSHA

• FCC

• International Code Congress (ICC)

Voting Members of NFPA 70

• CMP 3– Articles 300, 720, 725, 728, 760

• CMP 16– Articles 770, 800, 810, 820, 830, 840

When We Meet

• Every Monday morning of an US BICSI Conference.

• Occasionally with the Canadian Conference• Web conferences as issues and topics arise

All are welcome to join us

NFPA 70-2017National Electrical Code®

General Statistics

• 4,012 initial public inputs• 1,235 first revisions• 1,513 public comments issued on first revisions• Created 559 Second Revisions• There were 9 articles proposed and 5 new

articles appear in the 2017 NEC.

New Articles• Article 425 Fixed Resistance and Electrode Industrial Process Heating

Equipment

• Article 691 Large-Scale Photovoltaic (PV) Electric Supply Stations

• Article 706 Energy Storage Systems

• Article 711 Stand-Alone Systems– For power production sources operating in stand-alone mode

• Article 712 Direct Current Microgrids (DC Microgrids) – Alternative (e.g., wind, solar) power distribution system

Chapter 1:General

NEC Scope Expansion

The Code covers installation and removal of …

Note: NEC already required removal of temporary power wiring and abandoned communications cables.

Art

icle

90.

2(A

)

Code Arrangement Clarification

Chapters 5 , 6 , and 7 apply to special occupancies, special equipment, or other special conditions and

may supplement or modify the general requirements in Chapters 1 through 7.

Art

icle

90.

3

Definitions:Hazardous Locations (Art 500)• 500.2 (Hazardous Locations) Definitions moved to Article 100

– “as applied to Hazardous (Classified) Locations” add to end of effected terms

• New Definition– Cord Connector (as applied to Hazardous (Classified) Locations)

A fitting intended to terminate a cord to a box or similar device and reduce the strain at points of termination and may include an explosionproof, a dust-ignitionproof, or a flameproof seal..

Art

icle

100

Definition: Accessible, Readily (Readily Accessible)• Capable of being reached quickly for operation,

renewal, or inspections without requiring those to whom ready access is requisite to take actions such as to use tools (other than keys), to climb over or under, to remove obstacles, or to resort to portable ladders, and so forth.

Art

icle

100

Definitions: Building vs. Structure

• Building - A structure that stands alone or that is separated from adjoining structures by fire walls.

• Structure - That which is built or constructed, other than equipment.

Art

icle

100

Requirements for Electrical Installations

• New subsection – Clarifies that listing (product certification) be

performed by recognized qualified electrical testing laboratories

– Contains informational note indicates that OSHA has a list of qualified laboratories.

Art

icle

110

.3(C

)

New: Working Space for Limited Access

• Examples: Crawl spaces, Above suspended ceilings

• Working Space (Clearance Volume)– Minimum width of access: larger value of equipment

size or 762 mm (30 in)– Minimum depth of access: 900 mm (3 ft)– Maximum height of the working = height necessary to

install equipment

Art

icle

110

.26(

A)(4

)

New: Working Space for Limited Access

• Horizontal ceiling structural member/access panel permitted in working space

• Suspended Ceilings– Opening is ≥ 559 × 559 mm (22 × 22 in)

• Crawl spaces– accessible opening is ≥ 559 × 762 mm (22 × 30 in)

Art

icle

110

.26(

A)(4

)

Article 250:Grounding and Bonding

Article 250.22

• Circuits not to be grounded– Addition of Class 2 load side circuits for suspended

ceiling low-voltage power grid distribution systems as provided in 393.60(B)

Note: Article 393 is Low-voltage Suspended Ceiling Power Distribution Systems

Art

icle

250

Other Changes of Note for ICT

• Grounding Electrode Conductors (GECs)– 250.64: Protection Against Damage– 250.66: Modification of AC GEC Sizing

• Communication System Bonding Terminations– 250.94: Added alternative means (e.g., busbar) to

intersystem bonding terminal

Art

icle

250

Chapter 3:Wiring Methods and Materials

300.11 – Text Clarification

• (A) Secured in Place. Raceways, cable assemblies, boxes, cabinets, and fittings shall be securely fastened in place.

• (B) Wiring Systems Installed Above Suspended CeilingsSupport wires that do not provide secure support …

Art

icle

300

.11

Ducts for Environmental Air - New exception

• Wiring methods and cabling systems, listed for use in other spaces used for environmental air (plenums), shall be permitted to be installed in ducts specifically fabricated for environmental air-handling purposes under the following condition:– Wiring/cabling system is necessary to connect

equipment/devices that sense or act on the contained air – Total length of wiring/cabling system < 1.2 m (4 ft)

Art

icle

300

.22(

B)

Rooftop Ambient Temperature Factor for Determining Conductor Ampacity• Former adjustment table removed• Now, when cable/raceway is less than 23 mm

(7⁄8 in) above the surface, ambient temperature of the cable is to be increased by 33°C (60°F)

NOTE: Applies to all Class 2 and Class 3 circuits

Art

icle

310

.15(

B)(3

)(c)

Article 725:Class 1, Class 2, and Class 3Remote-Control, Signaling, and Power-Limited Circuits

Class 2 Circuits

• New: Required marking indicating maximum voltage and current output for all connection points of power limited sources starting Jan 1, 2018.

• New: Powered devices connected to a circuit supplying data and power shall be listed

Art

icle

725

Class 2 and 3 Circuits

• New: Temperature rating shall be marked on jackets of Class 2 and Class 3 cables that have a temperature rating exceeding 60C (140F)

Art

icle

725

New: Class 2 and Class 3 LP Cable

• Listed as suitable for carrying power and data circuits up to a specified current limit– Example: 1 ampere Class 2 limited-power cables

would be marked CL2-LP (1.0A), CL2R-LP (1.0A), etc.

• Works in conjunction with Article 725.144

Art

icle

725

.179

(I)

New: Article 725.144

• Transmission of Power And Data– Applies to Class 2 & Class 3 circuits that transmit

power and data to a powered device. – Requires compliance to Parts I and III of Article 725

and 300.11– 2 Compliance Approaches

Art

icle

725

.144

725.144(A)

• Types CL3P, CL2P, CL3R, CL2R, CL3, or CL2 – (1) The ampacity ratings in Table 725.144 shall apply

at an ambient temperature of 30°C (86°F).– (2) For ambient temperatures above 30°C (86°F), the

correction factors of 310.15(B)(2) shall apply.

Art

icle

725

.144

Table 725.144

Art

icle

725

.144

725.144(B)

• Types CL3P-LP, CL2P-LP, CL3R-LP, CL2R-LP, CL3-LP, or CL2-LP– (1) Can be installed in bundles, raceways, cable trays,

communications raceways, and cable routing assemblies.– (2) Follow the substitution hierarchy of 725.154 for cable types

without the suffix “LP” and without the marked ampere level.– (3) System design shall be permitted by qualified persons

under engineering supervision

Art

icle

725

.144

Difference Summary

• 725.144(A) sets maximum bundle sizes

• 725.144(B) does not restrict bundle size if Listed current of cable is larger than power transmitted– A Type CL2-LP(0.5) would be suitable for carrying up

to 0.5 A per conductor, regardless of the number of cables in a bundle. (725.144(B) Note 2)

Art

icle

725

.144

Maximum Bundle Size at 30 °C AmbientJacket Listing 60 °C (140°F) Jacket Listing 75 °C (167 °F)

26 AWG 24 AWG 23 AWG 22 AWG 26 AWG 24 AWG 23 AWG 22 AWG

PoE(0.175A) 192 192 192 192 192 192 192 192

PoE+ / PoE++(0.3A) 91 192 192 192 91 192 192 192

HDBaseT / PoE++ (0.5A) 37 61 91 192 91 91 192 192

Art

icle

725

.144

(A)

Notes: • A 90 °C jacket for 0.5A per conductor provides a 91 cable bundle size at 26 AWG, and 192 for 24 AWG and greater• Bundles larger than 192 cables are allowed if determined under engineering supervision

Article 800:Communication Circuits

Definitions

• Change:– Point of Entrance. The point within a building at

which the communications wire or cable emerges from an external wall or from a concrete floor slab.

• Terms moved to Article 100– Electrical Circuit Protective System, Innerduct

Art

icle

800

Temperature

• New 800.3(H): – Temperature Limitation of Conductors. Section

310.15(A)(3) shall apply.• Addition to 800.179

– The temperature rating shall be marked on the jacket of communications cables that have a temperature rating exceeding 60°C (140°F).

Art

icle

800

Entrance

• 800.48 Addition.– The point of entrance shall be permitted to be

extended from the penetration of the external wall or floor slab by continuous enclosing the entrance cables in rigid metal conduit (RMC) or intermediate metal conduit (IMC) to the point of emergence

Art

icle

800

Entrance

• Edit of 800.49: – Metallic Entrance Conduit Grounding. Metallic

conduit RMC or IMC containing communications entrance wire or cable …A

rtic

le 8

00

Article 840:Premises-Powered Broadband

Communications Systems

Scope

• This article covers premises-powered broadband communications systems.– Informational Note No. 1: A typical basic system

configuration consists of an optical fiber, twisted pair, or coaxial cable to the premises supplying a broadband signal to a network terminal …

Art

icle

840

.1

General

• Expansion of other applicable article – Communication Systems– Electrical Classification of Data Circuits and Cables.

• Citations to applicable sections of 725, 800 and 830 as necessary

Art

icle

840

New: 840.160 Powering Circuits

• Where the power supplied over a communications cable to communications equipment is greater than 60 watts, communication cables and the power circuit shall comply with 725.144 where communications cables are used in place of Class 2 and Class 3 cables.

Note: Amendment in process to further clarify minimum power threshold

Art

icle

840

Data Center Related Changes

Articles 645, 646, 706NFPA 75-2017

Articles 645 & 646

• Updated references to NFPA 75-2017• 645.5(E) Supply circuits/cables reorganized/expanded• 645.18 – New: Surge protection required for critical

operations data centers• Article 646.3: Expanded/clarified other applicable

articles

Art

icle

645

and

646

NFPA 75-2017

• Ch 4 – Risk Considerations Split – Now:– Ch 4: Fire Protection Approaches– Ch 5: Performance-Based Design Approach

• Automatic detection systems now required within return air stream of return air plenums and aisle containment

NFP

A 75

-201

7

Change: Automatic Fire Suppression System

• An automatic fire suppression system, is required for area below a raised floor in an ITE room or ITE area except when combustible material under the floor is limited to the following:– (1) Cables listed for plenum use– (2) Listed plenum communications raceways– (3) Listed equipment power cords up to 4.6 m (15 ft) each– (4) Cables installed in metallic raceways– (5) Installations in compliance with Section 300.22(C) of NFPA 70– (6) Listed cooling hoses

NFP

A 75

-201

7

New Article: Energy Storage Systems

• Covers all permanently installed energy storage systems operating at over 50 volts ac or 60 volts dc

• Covers items, such as– Disconnecting means – Partitions and distance– Connection to other systems pursuant to Article 705– Circuit Requirements– Electrochemical and flow battery storage systems

Art

icle

706

NEC 2017 Status and Next Steps

• Released End of August 2016–Temporary Interim Amendments under

development/approval• State adoption starts January 2017

• Proposals for NEC 2020 due Fall of 2018

Questions?

See us after the presentationor send to standards @bicsi.org

Thank You

Definition: Field Evaluation Body (FEB)

• An organization or part of an organization that performs field evaluations of electrical or other equipment.

Art

icle

100

Definition: Field Labeled (as applied to evaluated product)• Equipment or materials to which has been

attached a label, symbol, or other identifying mark of an FEB indicating the equipment or materials were evaluated and found to comply with requirements as described in an accompanying field evaluation report.

Art

icle

100

Note: Term found in Articles 230, 690, 692, 694, 705 and 710

Definition: Receptacle.

• A contact device installed at the outlet for the connection of an attachment plug, or for the direct connection of electrical utilization equipment designed to mate with the corresponding contact device. A single …

Art

icle

100

Article 250.30(A)(4)

• Grounding Separately Derived Alternating-Current Systems– Clarifies that the building grounding electrode

system must be used when establishing a grounding electrode for a separately derived system. (If outdoors, must comply with 250.30(C)

Art

icle

250

Direct Buried Cable Protection

• Where the enclosure or raceway is subject to physical damage, the conductors shall be installed in electrical metallic tubing, rigid metal conduit, intermediate metal conduit, RTRC-XW, Schedule 80 PVC conduit, or equivalent.A

rtic

le 3

00.5

(D)4

Controlled Receptacles

• Addition of Marking Requirement:The word “controlled” is now required to be on the receptacle face and visible after installation

Non-locking 125-volt, 15- and 20-ampere receptacles controlled or have control features for

energy management or building automation

Art

icle

406

.3(E

)

New: Receptacle with USB Charger

• A 125 V 15 A or 20 A receptacle that additionally provides Class 2 power shall be listed and constructed such that the Class 2 circuitry is integral with the receptacle.A

rtic

le 4

06.3

(F)

Direct Current (DC) Microgrid

• A power distribution system consisting of more than one interconnected dc power source supplying dc-dc converter(s), dc load(s), and/or ac load(s) powered by dc-ac inverter.

• Often combined with stand-alone production (e.g., PV, wind, diesel generator)

Art

icle

712