Scope of NEC: 90.2(A)(5) & (6) 100 Definition; Dormitory 100 Definition; Labeled

10/18/2019

Scope of NEC: 90.2(A)(5) & (6) • (5) Installations supplying shore power to ships and watercraft in marinas and boatyards, including monitoring of leakage current

• (6) Installations used to export electric power from vehicles to premises wiring or for bidirectional current flow

NEC2020 Changes IEEE Presentation Chad Kurdi, PE BKV Group

10/17/2019

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100 Definition; Dormitory 100 Definition; Labeled

Informational Note: If a listed product is of such a size, • A building or a space in a building in which group • sleeping accommodations are provided for more shape, material, or surface texture that it is not possible to than 16 persons who are not members of the apply legibly the complete label to the product, the same family in one room, or a series of closely complete label may appear on the smallest unit container associated rooms, under joint occupancy and in which the product is packaged. single management, with or without meals, but without individual cooking facilities. (CMP 2)

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100 Definition; Available Fault Current , 100 Definition; Reconditioned. • The largest amount of current capable of being • Electromechanical systems, equipment, apparatus, or components that are restored to delivered at a point on the system during a short-circuit operating conditions. condition. (CMP-10) • This process differs from normal servicing of equipment that remains within a facility, or replacement of listed equipment on a one-to-one basis. (CMP-10) • Informational Note: The term reconditioned is frequently referred to as rebuilt , refurbished , or remanufactured .

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110.12(C) Cables and Conductors (Relocate ***.24 110.14(D) Terminal Connection Torque from Chapters 7 & 8) • Tightening torque values for terminal connections shall be as indicated on equipment or in installation instructions provided by the manufacturer. • Cables and conductors installed exposed on the surfaces of ceilings and sidewalls shall be supported by the building structure in such a manner that the cables and conductors will not • An approved means shall be used to achieve the indicated torque value. be damaged by normal building use. • Such cables and conductors shall be secured by hardware including straps, staples, cable ties, hangers, or similar fittings designed and installed so as not to damage the cable. • The installation shall also conform with 300.4 and 300.11 . • Nonmetallic cable ties and other nonmetallic cable accessories used to secure and support cables in other spaces used for environmental air (plenums) shall be listed as having low smoke and heat release properties.

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110.26(C)(2) Large Equipment 110.26(C)(3) Personnel Doors • For large equipment that contains overcurrent devices, switching devices, or control devices, there shall be one entrance to and egress from the required working space not less than 610 • Equipment rated 800A ore more 1 mm (24 in.) wide and 2.0 m (6 ∕ 2 ft) high at each end of the working space. • Personnel door with 25’ must have listed panic hardware or listed fire exit hardware • This requirement shall apply to either of the following conditions: • Informational Note: For information on panic hardware, see UL 305, Standard For Safety For • (1) For equipment rated 1200 amperes or more and over 1.8 m (6 ft) wide Panic Hardware . • (2) For service disconnecting means installed in accordance with 230.71 where the combined ampere rating is 1200 amperes or more and over 1.8 m (6 ft) wide • For fire exit hardware, see UL 305, Standard For Panic Hardware , and UL 10C, Standard for Safety for Positive Pressure Fire Tests of Door Assemblies . • Open equipment doors shall not impede the entry to or egress from the working space.

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200.10(B) Identification of Terminals 210.12 (C) AFCI protection • In devices or utilization equipment with polarized connections , identification of terminals to which a grounded • 210.12(C) Guest Rooms, Guest Suites, and Patient Sleeping Rooms in Nursing Homes and Limited-Care conductor is to be connected shall be substantially white or silver in color. Facilities. • The identification of other terminals shall be of a readily distinguishable different color. • All 120V, single-phase, 15- and 20-ampere branch circuits supplying outlets and devices

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210.8A Dwelling Units. GFCI 210.8(B) Other Than Dwelling Units GFCI • Removal of “door” and “doorway” • All 125-volt through 250-volt receptacles supplied by single-phase branch • All 125-volt through 250-volt receptacles installed in the locations specified in 210.8(A) (1) through (A) ⁠(11) and circuits rated 150 volts or less to ground, 50 amperes or less, and all supplied by single-phase branch circuits rated 150 volts or less to ground shall have ground-fault circuit- interrupter protection for personnel. receptacles supplied by three-phase branch circuits rated 150 volts or less to • Basements ground, 100 amperes or less. • Indoor damp and wet locations • (11) Laundry areas • (12) Bathtubs and shower stalls — where receptacles are installed within 1.8 m (6 ft) of the outside edge of the bathtub or shower stall

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210.15 Reconditioned Equipment. 210.52(C)(2) Island and Peninsular Countertops and • The following shall not be reconditioned: Work Surfaces • (1) Equipment that provides ground-fault circuit-interrupter protection for • (a) At least one receptacle outlet shall be provided for the first (9 ft2), or fraction thereof, of the countertop or work surface. personnel • A receptacle outlet shall be provided for every additional (18 ft2), or fraction thereof, of the countertop or • (2) Equipment that provides arc-fault circuit-interrupter protection work surface. • (b) At least one receptacle outlet shall be located within (2 ft) of the outer end of a peninsular countertop or • (3) Equipment that provides ground-fault protection of equipment work surface. • Additional required receptacle outlets shall be permitted to be located as determined by the installer, designer, or building owner.

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210.8(F) GFCI Outdoor Outlets at Dwelling Units 220.12 & Table 220.12 Extensively Revised

• All outdoor outlets for dwellings, that are supplied by single-phase branch circuits rated 150 volts to ground or less, 50 amperes or less, shall have ground-fault circuit-interrupter protection for personnel. • Exception: Ground-fault circuit-interrupter protection shall not be required on lighting outlets other than those covered in 210.8(C).

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220.12(B) Energy Code. 220.14(J) Dwelling Units. • Building is designed and constructed to comply with an energy code adopted by • In one-family, two-family, and multifamily dwellings , the minimum unit load shall be not less than 3 volt- the local authority, the lighting load shall be permitted to be calculated using the amperes/ft2 . unit values specified in the energy code where the following conditions are met: • Motors rated less than 1∕ 8 hp and connected to a lighting circuit shall be considered part of the minimum • (1) A power monitoring system is installed that will provide continuous lighting load. information regarding the total general lighting load of the building. • (2) The power monitoring system will be set with alarm values to alert the building owner or manager if the lighting load exceeds the values set by the energy code. • Automatic means to take action to reduce the connected load shall be permitted. • (3) The demand factors specified in 220.42 are not applied to the general lighting load. • (4) The continuous load multiplier of 125 percent shall be applied.

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Table 220.42 Lighting Load Demand Factors 230.46 Spliced and Tapped Conductors.

• Service-entrance conductors shall be permitted to be spliced or tapped in accordance with 110.14, 300.5(E), 300.13, and 300.15. • Power distribution blocks, pressure connectors, and devices for splices and taps shall be listed. • Power distribution blocks installed on service conductors shall be marked “suitable for use on the line side of the service equipment” or equivalent. • Effective January 1, 2023, pressure connectors and devices for splices and taps installed on service conductors shall be marked “suitable for use on the line side of the service equipment” or equivalent.

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230.62(C) Barriers. 230.67 Surge -Protective Device. • Barriers shall be placed in service equipment such that no uninsulated, ungrounded service busbar or service • (A) All services supplying dwelling units shall be provided with a surge-protective device terminal is exposed to inadvertent contact by persons or maintenance equipment while servicing load (SPD). terminations. • (B) SPD shall be an integral part of the service equipment or shall be located immediately adjacent thereto. • Exception: The SPD shall not be required to be located in the service equipment as required in (B) if located at each next level distribution equipment downstream toward the load. • (C) SPD shall be a Type 1 or Type 2 SPD. • (D)Where service equipment is replaced, all of the requirements of this section shall apply.

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230.71(B) Two to Six Service Disconnects 230.85 Emergency Disconnects at Dwelling Units

• Two to six service disconnecting means shall be permitted to consist of a combination of any of the following: • One- & two-family dwelling units , all service conductors shall terminate in disconnecting means having a short • (1) Separate enclosures with a main service disconnecting means in each enclosure circuit current rating equal to or greater than the available fault current, installed in a readily accessible outdoor location. • (2) Panelboards with a main service disconnecting means in each panelboard enclosure • If more than one disconnect is provided, they shall be grouped. • (3) Switchboard(s) where there is only one service disconnect in each separate vertical section where there are barriers separating each vertical section • Each disconnect shall be one of the following: • (4) Service disconnects in switchgear or metering centers where each disconnect is located in a separate • (1) Service disconnects compartment EMERGENCY DISCONNECT, SERVICE DISCONNECT • IN2: Separate enclosures; motor control centers, fused disconnects, circuit breaker enclosures, and transfer switches • (2) Meter disconnects EMERGENCY DISCONNECT, METER DISCONNECT, NOT SERVICE EQUIPMENT • (3) Listed disconnect switches or circuit breakers on the supply side of each service disconnect that are suitable for use as service equipment and marked: EMERGENCY DISCONNECT, NOT SERVICE EQUIPMENT

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240.67(C)/240.87(C) Fuses & Breakers. Performance 242 Overvoltage Protection Testing • Article provides the general requirements, installation requirements, and connection requirements for • Arc energy reduction protection system shall be performance tested by primary current injection testing or overvoltage protection and overvoltage protective devices . another approved method when first installed on site. • Part II covers surge-protective devices ( SPDs ) permanently installed on premises wiring systems of not more • This testing shall be conducted by a qualified person(s) in accordance with the manufacturer’s instructions. than 1000 volts • A written record of this testing shall be made and shall be available to the authority having jurisdiction. • Part III covers surge arresters permanently installed on premises wiring systems over 1000 volts • IN: Some energy reduction protection systems cannot be tested using a test process of primary current • Previously Article 280 & 285 injection due to either the protection method being damaged such as with the use of fuse technology or because current is not the primary method of arc detection.

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250.64 Aluminum and Copper -Clad Aluminum Conductors 250.68(C)(3) GEC Connections • GEC of bare, covered, or insulated aluminum or copper-clad aluminum shall • (3) A rebar-type concrete-encased electrode with an additional rebar section extended from its location within the concrete foundation or footing to an accessible location that is not subject to corrosion shall be permitted comply with: for connection of GEC & BJ in accordance with: • (1) Bare or covered conductors without an extruded polymeric covering shall • a. Additional rebar section shall be continuous with the grounding electrode rebar or shall be connected to the grounding electrode rebar and connected together by the usual steel tie wires , exothermic welding, welding , not be installed where subject to corrosive conditions or be installed in direct or other effective means. contact with concrete . • b. Rebar extension shall not be exposed to contact with the earth without corrosion protection. • (2) Terminations made within outdoor enclosures that are listed and identified • c. Rebar shall not be used as a conductor to interconnect the electrodes of grounding electrode systems. for the environment shall be permitted within (18 in.) of the bottom of the enclosure. • (3)Aluminum or copper-clad aluminum conductors external to buildings or equipment enclosures shall not be terminated (18 in.) of the earth .

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Article 310 reorganized 310.12 & Table 310.12 Dwelling Unit Table Article covers general requirements for conductors rated up to and including • • 310.12 Single-Phase Dwelling Services and Feeders. 240/120C & 208/120V1-phase, 100-400A 2000 volts and their type designations, insulations, markings, mechanical • Ampacity not less than 83% of the service rating. strengths, ampacity ratings, and uses. • If no adjustment or correction factors are required, Table 310.12 shall be permitted to be applied. • GC shall be permitted to be sized smaller than the ungrounded conductors, if the requirements of 220.61 and 230.42 for service conductors or the requirements of 215.2 and 220.61 for feeder conductors are met. • Where correction or adjustment factors are required by 310.15(B) or (C), they shall be permitted to be applied to the ampacity associated with the temperature rating of the conductor.

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Article 310 reorganized 311 Medium Voltage Conductors and Cables • Table 310.16 • Combining Article 328 and Article 310.60 in one. • Article covers the use, installation, construction specifications, and ampacities for Type MV medium voltage conductors and cable

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312.8(B) Power Monitoring or Energy Management 312.8(B) Power Monitoring or Energy Management • The wiring space of enclosures for switches or overcurrent devices shall be permitted to contain power • Conductors used exclusively for control or instrumentation circuits shall comply with either 312.8(B) ⁠(3) ⁠(a) or monitoring or energy management equipment in accordance with 312.8(B)(1) through (B)(3). (B)(3)(b). • Power monitoring or energy management equipment shall be identified as a field installable accessory as part • (a)Conductors shall comply with 725.49 . of the listed equipment or is a listed kit evaluated for field installation in switch or overcurrent device • (b) Conductors smaller than 18 AWG, but not smaller than 22 AWG for a single conductor and 26 AWG for a enclosures. multiconductor cable, where it meet all of the following conditions: • Total area of all conductors, splices, taps , and equipment at any cross section of the wiring space shall not • (1) Are enclosed within raceways or routed along one or more walls of the enclosure and secured at intervals exceed 75% of the cross-sectional area of that space. that do not exceed (10 in.) • (2) Are secured within (10 in.) of terminations • (3) Are secured to prevent contact with current carrying components within the enclosure • (4) Are rated for the system voltage and not less than 600 volts • (5) Have a minimum insulation temperature rating of 90°C

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314.16(B)(5) Equipment Grounding Conductor Fill. ARTICLE 337 Type P Cable • Where up to four EGC or EBJ enter a box, a single volume allowance in accordance with Table 314.16(B) shall • Covers the use, installation, and construction specifications for up through 2000 volt Type P cable (armored be made based on the largest EGC or EBJ entering the box. and unarmored). • A 1∕ 4 volume allowance shall be made for each additional EGC or EBJ that enters the box, based on the largest • A factory assembly of one or more insulated flexible tinned copper conductors, with associated equipment EGC or EBJ. grounding conductor(s), with or without a braided metallic armor and with an overall nonmetallic jacket. • 337.10 Uses Permitted. • (1) Under engineering supervision in industrial installations where conditions of maintenance and supervision ensure that only qualified persons monitor and service the system. • (2) In hazardous (classified) locations where specifically permitted by other articles in this Code. • 337.12 Uses Not Permitted. • (1) Where it will be exposed to physical damage • (2) Where not specifically permitted by other articles in the Code

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406.9(C) Bathtub and Shower Space. 408.18(C) Connections.

• Receptacles shall not be installed within a zone measured (3 ft) horizontally and (8 ft) vertically from the top of • Each section of equipment that requires rear or side access to make the bathtub rim or shower stall threshold . field connections shall be so marked by the manufacturer on the front. • The identified zone is all-encompassing and shall include the space directly over the tub or shower stall. • Section openings requiring rear or side access shall comply with • Exception: In bathrooms with less than the required zone the receptacle(s) shall be permitted to be installed 110.26 . opposite the bathtub rim or shower stall threshold on the farthest wall within the room . • Equipment Grounding Conductors; Load terminals for field wiring shall be so located that it is not necessary to reach across uninsulated ungrounded bus in order to make connections. • Grounded Circuit Conductors; load terminals for field wiring are grouped together in one location, they shall be so located that it is not necessary to reach across uninsulated ungrounded bus , whether or not energized. • Ungrounded Conductors: Load terminals shall be so located that it is not necessary to reach across energized uninsulated bus in order to make connections. • Bus on the line side of service, branch, or feeder disconnects is considered energized with respect to its associated load side circuits. 39 40

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Part XVI. Special Provisions for Horticultural Lighting 408.43 Panelboard Orientation Equipment 410.170 -180 • Panelboards shall not be installed in the face-up position. • Luminaires complying with Parts , I. II, III, IV, V, VI, VII, IX, X, XI, and XII of this article shall be permitted to be used for horticultural lighting. • Spectral characteristic needed for the growth of plants and can also provide supplemental general illumination within the growing environment. • Horticultural Lighting equipment shall be listed . • Shall be installed and used in accordance with the manufacturer ’s installation instructions and installation markings on the equipment as required by that listing. • Shall not be installed as lighting for general illumination unless such use is indicated in the manufacturer’s instructions. • Shall not be installed where it is likely to be subject to physical damage or where concealed .

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Part XVI. Special Provisions for Horticultural Lighting Equipment 410.170 -180 430.7(A) Usual Motor Applications • Flexible cord as part of listed lighting equipment • (16) Motors that are electronically protected from overloads in accordance with 430.32(A)(2) and (B)(2) shall • Connecting a horticultural lighting luminaire directly to a branch circuit outlet be marked “electronically protected” or “E.P.” • Interconnecting horticultural lighting luminaires • Connecting a horticultural lighting luminaire to a remote power source • 410.180 Fittings and connectors attached to flexible cords shall be provided as part of a listed horticultural lighting equipment device or system and installed in accordance with the instructions provided as part of that listing. • 410.182 Grounding. shall be grounded as required in Article 250 and Part V of this article. • 410.184 GFCI: supplied by lighting outlets protected by a GFCI . • 410.186 Support. Special fittings identified for support shall be designed specifically for the horticultural lighting equipment on which they are installed and shall be used in accordance with the installation instructions provided and shall be securely fastened. • 410.188 Hazardous (Classified) Locations: shall conform to Articles 500 through 517 in addition to this article.

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450.9 Ventilation 547.5(G) Receptacles in Agricultural building

• Ventilation shall dispose of the transformer full-load • Ground-fault circuit-interrupter protection shall be provided as required in 210.8(B) . GFCI protection shall not heat losses without creating a temperature rise that is be required for other than 125-volt, 15- and 20-ampere receptacles installed within the following areas : in excess of the transformer rating. • (1) Areas having an equipotential plane • Transformers with ventilating openings shall be installed • (2) Outdoors so that the ventilating openings are not blocked by walls or other obstructions. • (3) Damp or wet locations • The required clearances shall be clearly marked on the • (4) Dirt confinement areas for livestock transformer. • Transformer top surfaces that are horizontal and readily accessible shall be marked to prohibit storage.

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547.9 Electrical Supply to Building(s) or Structure(s) from 547.9 (C) Underground feeders from a distribution point a Distribution Point. • Service disconnecting means and overcurrent protection for each set of feeders or branch circuits shall be located at the distribution point. • Any agricultural building or structure for livestock located on the same premises shall be supplied from a distribution point. • Service disconnecting means shall be installed in accordance with Part VI of Article 230. • More than one distribution point on the same premises shall be permitted. • Feeders or branch circuits supplied to buildings or structures shall comply with 250.32 and Article 225, Parts I and II. • The overhead electrical supply shall comply with 547.9(A) and (B) or with 547.9(C). • IN: Methods to reduce neutral-to-earth voltages in livestock facilities include supplying buildings or structures • The underground electrical supply shall comply with 547.9(C). with 4-wire single-phase services, sizing 3-wire single-phase service and feeder conductors to limit voltage • Existing agricultural building or structure for other than livestock & any existing buildings & structures not drop to 2 percent, and connecting loads line-to-line. under the scope of Article 547 shall be permitted to be supplied in accordance with 250.32(B)(1) Exc. No. 1.

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551.71(A) 20 -Ampere Recreational Vehicle Parks 555.13 Bonding of Non -Current -Carrying Metal Parts • Every recreational vehicle site with electrical supply shall be equipped with recreational vehicle site supply Marinas, Boatyards, Floating Buildings, and Commercial and Noncommercial Docking Facilities equipment with at least one 20A, 125V weather-resistant receptacle . • All metal parts in contact with the water, all metal piping, and all non-current-carrying metal parts that are • This receptacle, when used in recreational vehicle site electrical equipment, shall not be required to be likely to become energized shall be connected to the grounding bus in the panelboard using solid copper tamper-resistant in accordance with 406.12. conductors; insulated, covered, or bare; not smaller than 8 AWG. • Connections to bonded parts shall be made in accordance with 250.8.

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555.35(B) Leakage Current Measurement Device. 555.35 Feeders and Branch Circuits with GFPE • Where more than three receptacles supply shore power to boats, a leakage current measurement device shall • (A)(1) Receptacles Providing Shore Power; Individual GFPE set to open at currents not exceeding 30 mA. be available and be used to determine leakage current from each boat that will utilize shore power. • (A)(2) GFCI Protection for Personnel. All 125V, 1-p, 15- & 20-A receptacles for other than shore power • IN#1: Leakage current measurement will provide the capability to determine when an individual boat has • (A)(3) Feeder and Branch-Circuit Conductors with GFPE. shall be provided with GFPE set to open at currents defective wiring or other problems contributing to hazardous voltage and current. not exceeding 100 mA . • The use of a test device will allow the facility operator to identify a boat that is creating problems. • Coordination with downstream GFPE shall be permitted at the feeder overcurrent protective device. • In some cases a single boat may cause an upstream GFPE device protecting a feeder to operate even though • Exception to (3): Transformer secondary conductors of a separately derived system that do not exceed (10 ft) multiple boats are supplied from the same feeder. and are installed in a raceway shall be permitted to be installed without ground-fault protection. • The use of a test device will help the facility operator prevent a particular boat from contributing to hazardous • This exception shall also apply to the supply terminals of the equipment supplied by the transformer secondary voltage and current in the marina area. conductors.

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680.2 & 680.50 Splash Pads 690.12(B)(2) Inside the Array Boundary • Immersion Pool ; pool for ceremonial or ritual immersion of users, which is designed and intended to have its • (1) PV hazard control system listed for the purpose shall be installed in accordance with the instructions contents drained or discharged. included with the listing or field labeling. • Splash Pad ; fountain with a pool depth (1 in.) or less, intended for recreational use by pedestrians. • Where a hazard control system requires initiation to transition to a controlled state, the rapid shutdown initiation device required in 690.12(C) shall perform this initiation . • Does not include showers intended for hygienic rinsing prior to use of a pool, spa, or other water feature. • (2) Controlled conductors located inside the boundary shall be limited to not more than 80 volts within 30 • Part I and Part V of this article shall apply to all permanently installed fountains as defined in 680.2. seconds of rapid shutdown initiation. Voltage shall be measured between any two conductors and between • Fountains that have water common to a pool and fountains intended for recreational use by pedestrians, any conductor and ground. including splash pads, shall additionally comply with the requirements in Part II of this article. • (3) PV arrays shall have no exposed wiring methods or conductive parts and be installed more than (8 ft) from • Part V does not cover self-contained, portable fountains. exposed grounded conductive parts or ground. • Portable fountains shall comply with Parts II and III of Article 422.

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690.33 Mating Connectors 690.41(B) Ground -Fault Protection • (A) Mating connectors shall be polarized and shall have a configuration that is noninterchangeable • PV system dc circuits that exceed 30 volts or 8 amperes shall be provided with dc ground-fault protection with receptacles in other electrical systems on the premises. meeting the requirements of 690.41(B)(1) and (B)(2) to reduce fire hazards. • (B) Mating connectors shall be constructed and installed so as to guard against inadvertent contact • Solidly grounded PV source circuits with not more than two modules in parallel and not on or in buildings shall with live parts by persons. be permitted without ground-fault protection. • (C) Mating connectors shall be of the latching or locking type. • Mating connectors that are readily accessible and that are used in circuits operating at over 30 volts dc or 15 volts ac shall require a tool for opening . • Where mating connectors are not of the identical type and brand, they shall be listed and identified for intermatability, as described in the manufacturer’s instructions. • (D) Mating connectors shall be one of the following: • (1) Rated for interrupting current without hazard to the operator • (2)A type that requires the use of a tool to open and marked “Do Not Disconnect Under Load” or “Not for Current Interrupting” • (3)Supplied as part of listed equipment and used in accordance with instructions provided with the listed connected equipment

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690.41(B)(3) Indication of Faults 705.13 Power Control Systems (PCS) • Ground-fault protection equipment shall provide indication of ground faults at a readily accessible location. • Shall be listed and evaluated to control the output of one or more power production • IN: Examples of indication include: remote indicator light, display, monitor, signal to a monitored alarm system, sources, energy storage systems (ESS), and other equipment. or receipt of notification by web-based services. • PCS shall limit current and loa ding on the busbars and conductors supplied by the PCS. • PCS shall limit the current to the am pacity of the conductors or the ratings of the busbars to which it is connected in accordance with 705.13(A) -(E). • (A) PCS controller shall monitor all currents within the PCS. • Any busbar or conductor on the load side of the service disconnecting means that is not monitored by the PCS shall comply with 705.12 . • Where the PCS is connected in accordance with 705.11 , the PCS shall monitor the service conductors and prevent overload of these conductors.

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705.13 Power Control Systems (PCS) 800 General Requirements for Communications Systems • (B) Sum of all PCS-controlled currents plus all monitored currents from other sources of • Article covers general requirements for communications systems. supply shall not exceed the ampacity of any busbar or conductor supplied by the power • General requirements apply to communications circuits, community antenna television and radio distribution production sources. systems, network-powered broadband communications systems, and premises-powered broadband communications systems , unless modified by Articles 805, 820, 830, or 840. • Where the PCS is connected to an overcurrent device protecting any busbar or conductor not monitored by the PCS, the setting of the PCS controller shall be set within the ratings of that overcurrent device. • (C) PCS shall provide overcurrent protection either by overcurrent devices or by the PCS including the functionality as an overcurrent device in the product listing. • (D) Rating of the overcurrent device for any single power source controlled by the PCS shall not exceed the rating of the busbar or the ampacity of the conductors to which it is connected. • (E) Access to settings of the PCS shall be restricted to qualified personnel in accordance with the requirements of 240.6(C) .

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The End The End

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