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POWER TO THIS SERVICE IS ALSO SUPPLIED FROM THE FOLLOWING SOURCES WITH DISCONNECTS LOCATED AS SHOWN CAUTION BUILDING / STRUCTURE EMT / CONDUIT RACEWAYS PHOTOVOLTAIC POWER SOURCE PER NEC 690.31(D)(2) AC DISCONNECT / BREAKER / POINTS OF CONNECTION PER NEC 690.13(B) BREAKER PANEL / PULL BOXES PER NEC 690.15(B) & NEC 690.33(D)(2) DO NOT DISCONNECT UNDER LOAD CAUTION PHOTOVOLTAIC SYSTEM CIRCUIT IS BACKFED PER NEC 705.12(B)(3)(2) WARNING POWER SOURCE OUTPUT CONNECTION. DO NOT RELOCATE THIS OVERCURRENT DEVICE. MAIN SERVICE DISCONNECT WARNING MAIN PHOTOVOLTAIC SYSTEM DISCONNECT PER NEC 690.13(B) ADHESIVE FASTENED SIGNS NEC 110.21(B)(1) INFORMATIONAL NOTE: ANSI Z535.4 - 2011 Product safety signs and labels, provides guidelines for suitable font sizes, words, colors, symbols, and location requirements for labels. NEC 110.21(B)(3) The label shall be suitable for the environment where it is installed. IFC 605.11.1.3 Adhesive fastened signs may be acceptable if properly adhered. Vinyl signs shall be weather resistant. LABELING REQUIREMENTS FOR ARTICLE 690 NEC 690.13(B) Each PV system disconnecting means shall plainly indicate whether in the open (off) or closed (on) position and be permanently marked “PV SYSTEM DISCONNECT” or equivalent. Additional markings shall be permitted based upon the specific system configuration. For PV system disconnecting means where the line and load terminals may be energized in the open position, the device shall be marked with the following words or equivalent: "Terminals on the line and load sides may be energized in the open position." NEC 690.15(B) An isolating device shall be rated to open the maximum circuit current under load or be marked “Do Not Disconnect Under Load” or “Not for Current Interrupting.” NEC 690.31(B)(1) PV system circuit conductors shall be identified at all termination, connection, and splice points by color coding, marking tape, tagging, or other approved means. Conductors relying on other than color coding for polarity identification shall be identified by an approved permanent marking means such as labeling, sleeving or shrink-tubing that is suitable for the conductor size. NEC 690.31(D)(2) Unless located and arranged so the purpose is evident, the following wiring methods and enclosures that contain PV system dc circuit conductors shall be marked with the wording PHOTOVOLTAIC POWER SOURCE OR SOLAR PV DC CIRCUIT by means of permanently affixed labels or other approved permanent marking: (1) Exposed raceways, cable trays, and other wiring methods (2) Covers or enclosures of pull boxes and junction boxes (3) Conduit bodies in which any of the available conduit openings are unused. The labels or markings shall be visible after installation. All letters shall be capitalized and shall be a minimum height of 9.5 mm (3⁄8in.) in white on a red background. labels shall appear on every section of the wiring system that is separated by enclosures, walls, partitions, ceilings, or floors. spacing between labels or markings, or between a label and a marking, shall not be more than 3 m (10ft). Labels required by this section shall be suitable for the environment where they are installed. NEC 690.31(E) Solidly grounded bipolar PV systems shall be clearly marked with a permanent, legible warning notice indicating that the disconnection of the grounded conductor(s) may result in overvoltage on the equipment. NEC 690.33(D)(2) Interruption of Circuit. Connectors shall be a type that requires the use of a tool to open and marked “Do Not Disconnect Under Load” or “Not for Current Interrupting.” NEC 690.51 Modules and AC modules shall be marked in accordance with their listing. NEC 690.53 A permanent readily visible label indicating the highest maximum dc voltage in a PV system, calculated in accordance with 690.7, shall be provided by the installer at one of the following locations: (1) DC PV system disconnecting means (2) PV system electronic power conversion equipment (3) Distribution equipment associated with the PV system. NEC 690.54 All interactive system(s) points of interconnection with other sources shall be marked as an accessible location at the disconnecting means as a power source and with the rated ac output current and the nominal operating ac voltage. NEC 690.55 The PV system output circuit conductors shall be marked to indicate polarity where connected to energy storage systems. NEC 690.56(A) Plaques or directories shall be installed in accordance with 710.10. NEC 690.56(B) Plaques or directories shall be installed in accordance with 705.10 AND 712.10. NEC 690.56(C) The type of PV system is shown in figure 690.56(C). NEC 690.56(C)(2) A rapid shutdown initiation device shall have a label located on or no more than 1 m (3 ft) from the initiation device that includes the following wording: RAPID SHUTDOWN FOR SOLAR PV SYSTEM. The label shall be reflective, with all letters capitalized and having a minimum height of 9.5 mm (3⁄8 in.), in white on red background. NEC 690.59 PV systems connected to other sources shall be installed in accordance with parts I and II of Article 705. NEC 692.56 A fuel cell system that stores electrical energy shall require the following warning sign, or equivalent, at the location of the service disconnecting means of the premises: WARNING FUEL CELL POWER SYSTEM CONTAINS ELECTRICAL ENERGY STORAGE DEVICES. NEC 705.12(B)(3)(3) The sum of the ampere ratings of all overcurrent devices on panelboards, both load and supply devices, excluding the rating of the overcurrent device protecting the busbar, shall not exceed the ampacity of the busbar. The rating of the overcurrent device protecting the busbar shall not exceed the rating of the busbar. Permanent warning labels shall be applied to distribution equipment displaying the following or equivalent wording: WARNING: THIS EQUIPMENT FED BY MULTIPLE SOURCES. TOTAL RATING OF ALL OVERCURRENT DEVICES EXCLUDING MAIN SUPPLY OVERCURRENT DEVICE SHALL NOT EXCEED AMPACITY OF BUSBAR. NEC 705.12(D) Suitable for backfeed. Fused disconnects, unless otherwise marked, shall be considered suitable for backfeed. NEC 706.15(C) Each ESS disconnecting means shall plainly indicate whether it is in the open (on) or closed (off) position and be permanently marked “ENERGY STORAGE SYSTEM DISCONNECT”. The disconnecting means shall be legibly marked in the field to indicate the following: Nominal ESS ac voltage and maximum ESS dc voltage Available fault current derived from the ESS An arc-flash label applied in accordance with acceptable industry practice Data calculation was performed. REQUIREMENTS FOR ELECTRICAL INSTALLATIONS (FIELD MARKING) NEC 110.16(A) Arc Flash: Electrical equipment, such as switchboards, switchgear, panelboards, industrial control panels, meter socket enclosures, and motor control centers, that is in other than dwelling units, and is likely to require examination, adjustment, servicing, or maintenance while energized, shall be field or factory marked to warn qualified persons of potential electric arc flash hazards. The marking shall meet the requirements in 110.21(B) and shall be located so as to be clearly visible to qualified persons before examination, adjustment, servicing, or maintenance of the equipment. NEC 110.16(B) In other than dwelling units, in addition to the requirements in (A), a permanent label shall be field or factory applied to service equipment rated 1200 amps or more. The label shall meet the requirements of 110.21(B) and contain the following information: 1.Nominal system voltage 2.Available fault current at the service overcurrent protective devices. 3.The clearing time of service overcurrent protective devices based on the available fault current at the service equipment. 4.The date the label was applied. Exception: Service equipment labeling shall not be required if an arc flash label is applied in accordance with acceptable industry practice. NEC 110.21(B)(1) Field Applied Hazard Markings: The marking shall warn of the hazards using effective words, colors, symbols, or any combination thereof. NEC 110.21(B)(3) The label shall be of sufficient durability to withstand the environment involved. NEC 110.22(B) Engineered Series Combination Systems: Equipment enclosures for circuit breakers or fuses applied in compliance with series combination ratings selected under engineering supervision in accordance with 250.86(A) shall be legibly marked in the field as directed by the engineer to indicate the equipment has been applied with a series combination rating. The marking shall meet the requirements in 110.21(B). NEC 110.24(A) Field Marking: Service equipment at other than dwelling units shall be legibly marked in the field with the maximum available fault current. The field marking(s) shall include the date the fault-current calculation was performed and be of sufficient durability to withstand the environment involved. The calculation shall be documented and made available to those authorized to design, install, inspect, maintain, or operate the system. NEC 110.27(C) Entrances to rooms or other guarded locations that contain exposed live parts shall be marked with conspicuous warning signs forbidding unqualified persons to enter. NEC 210.5(C)(1)(b) Posting of Identification Means: The method utilized for conductors originating within each branch-circuit panelboard or similar branch circuit distribution equipment shall be documented in a manner that is readily available and shall be permanently posted at each branch-circuit panelboard or similar branch-circuit distribution equipment. The label shall be of sufficient durability to withstand the environment involved and shall not be handwritten. NEC 230.2(E) Identification: Where a building or structure is supplied by more than one service, or any combination of branch circuits, feeders, and services, a permanent plaque or directory shall be installed at each service disconnect location denoting all other services, feeders, and branch circuits supplying that building or structure and the area served by each. NEC 408.4(B) Source of supply: All switchboards, switchgear, and panelboards supplied by feeder(s) in other than one-or two-family dwellings shall be permanently marked to indicate each device or equipment where the power originates. The label shall be permanently affixed, of sufficient durability to withstand the environment involved and not be handwritten. NEC 705.10 A permanent plaque or directory shall be installed at a building supplied by a stand-alone system at each service equipment location, or at an approved readily visible location. the plaque or directory shall denote the location of each power source disconnecting means for the premises or be grouped with other plaques or directories for other on-site sources. The marking shall comply with 110.21(B). NEC 705.12(C) Equipment containing overcurrent devices in circuits supplying power to a busbar or conductor supplied from multiple sources shall be marked to indicate the presence of all sources. NEC 705.12(B)(3)(3) Permanent warning label shall be applied to the distribution equipment displaying the following or equivalent wording: THIS EQUIPMENT FED BY MULTIPLE SOURCES: TOTAL RATING OF ALL OVERCURRENT DEVICES EXCLUDING MAIN POWER SUPPLY SHALL NOT EXCEED AMPACITY OF BUSBAR. NEC 705.12(B)(3)(2) A permanent warning label shall be applied to the distribution equipment adjacent to the back-fed breaker from the inverter power source that displays the following or equivalent wording: WARNING: "Power output connection. Do not relocate this overcurrent drive". NEC 710.15(C) Stand-alone systems shall be permitted to supply 120 volts to single-phase, 3-wire, 120/240-volt service equipment or distribution panels where there are no 240-volt outlets and where there are no multiwire branch circuits. In all installations, the sum of the ratings of the power sources shall be less than the rating of the neutral bus in the service equipment. This equipment shall be marked with the following words or equivalent: “WARNING: Single 120-volt supply - do not connect multiwire branch circuits." OSHA 1910.145(F)(7) Warning tags are used to represent a hazard level between “Caution” and “Danger”. GENERAL NOTES FOR LABELS AND MARKINGS: 1.LABELS AND MARKINGS SHALL BE APPLIED TO THE APPROPRIATE COMPONENTS IN ACCORDANCE WITH THE NEC. 2.SOLAR MODULES ARE SUPPLIED FROM THE MANUFACTURER WITH MARKINGS PRE-APPLIED TO MEET THE REQUIREMENTS OF THE NEC. 3.THE INVERTER IS SUPPLIED FROM THE MANUFACTURER WITH THE APPROPRIATE LABELS AND MARKINGS TO MEET THE REQUIREMENTS OF NEC. 4.ALL OTHER WARNING AND CAUTION LABELS, UNLESS OTHERWISE SPECIFIED, MUST MEET THE REQUIREMENTS OF ANSI Z535.4 – 2011 PER ARTICLE 110.21(B) IN THE NEC 2020. THE ANSI STANDARD REQUIRES THAT DANGER, WARNING, AND CAUTION SIGNS USED THE STANDARD HEADER COLORS, HEADER TEXT, AND SAFETY ALERT SYMBOL ON EACH LABEL. THE ANSI STANDARD REQUIRES A HEADING THAT IS AT LEAST 50% TALLER THAN THE BODY WHILE NOT REQUIRED IN THE NEC 2020, THE MESSAGE TEXT SHOULD BE AT LEAST .12” TALL. IF WE COMPARE THIS TO OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION (OHSA)1910.145 AND THE AMERICAN NATIONAL STANDARD INSTITUTE (ANSI) Z535, IT IS SPECIFIED THAT SIGNS MUST BE VISIBLE AT A SAFE VIEWING DISTANCE FROM THE HAZARD. THEY ALSO RECOMMEND THE USE OF SAFETY ALERT SYMBOLS, WHERE APPLICABLE. PER NEC 705.10 & 690.56(A)(B) PHOTOVOLTAIC AC DISCONNECT "ACDS-1" RATED AC OUTPUT CURRENT: NOMINAL OPERATING AC VOLTAGE: 416.5A 208V PER NEC 690.54 WARNING ELECTRICAL SHOCK HAZARD PER NEC 705.12(D) & NEC 690.59 WARNING ELECTRICAL SHOCK HAZARD PER NEC 110.27(C) & OSHA 1910.145(f)(7) PHOTOVOLTAIC AC DISCONNECT SOLAR PV DC CIRCUIT PER NEC 690.31(D)(2) WARNING PER NEC 705.12(B)(3)(3) THIS EQUIPMENT FED BY MULTIPLE SOURCES: TOTAL RATING OF ALL OVERCURRENT DEVICES EXCLUDING MAIN POWER SUPPLY SHALL NOT EXCEED AMPACITY OF BUSBAR TERMINALS ON THE LINE AND LOAD SIDES MAY BE ENERGIZED IN THE OPEN POSITION PER NEC 706.15(C)(4) & NEC 690.13(B) TERMINALS ON THE LINE AND LOAD SIDES MAY BE ENERGIZED IN THE OPEN POSITION TURN OFF PHOTOVOLTAIC AC DISCONNECT PRIOR TO WORKING INSIDE PANEL PER NEC 706.15(C)(4) & NEC 690.13(B) PER NEC 705.12(C) & NEC 690.59 WARNING DUAL POWER SOURCE SECOND SOURCE IS PHOTOVOLTAIC SYSTEM NOTE : ELECTRICAL SERVICE EQUIPMENT MUST BE FIELD MARKED PER THE NEC CODE WHEN IT IS PRESENT IN A BUILDING OR STRUCTURE (OTHER THAN DWELLING UNITS) SUPPORTED BY MORE THAN ONE SERVICE PROVIDER (I.E., PUBLIC UTILITIES SUCH AS ELECTRICITY AND A PV SYSTEM).THIS INCLUDES ARC FLASH AND INFORMATIONAL LABELING. PER NEC 706.15(C) AND NEC 110.16 AND NFPA 70E ARTICLE 130.5(C)(1),(2),(3) WARNING ARC-FLASH AND SHOCK HAZARD APPROPRIATE PPE REQUIRED FIELD MARKING a.INVERTER b.BREAKER PANEL / PULL BOXES / MAIN SERVICE DISCONNECT A = BLACK B = RED C = BLUE NEUTRAL = WHITE PER NEC 210.5 (C)(1)(B) c.BREAKER PANEL PER NEC 408.4(B) INV-1 THIS PANEL FED FROM INV-1 TO INV-5 PER NEC 705.12(B)(3)(2) PHOTOVOLTAIC AC DISCONNECT "ACDS-2" RATED AC OUTPUT CURRENT: NOMINAL OPERATING AC VOLTAGE: 416.5A 208V PER NEC 690.54 PRODUCTION / NET METER (BI-DIRECTIONAL) PER NEC 705.12(D)(3) & NEC 690.59 WARNING DUAL POWER SOURCE SECOND SOURCE IS PHOTOVOLTAIC SYSTEM WARNING POWER SOURCE OUTPUT CONNECTION DO NOT RELOCATE THIS OVERCURRENT DEVICE. 407 E 1st. ST., SANTA ANA, CA 92701 419 E 1st. ST., SANTA ANA, CA 92701 RAPID SHUTDOWN FOR SOLAR PV SYSTEM PER NEC 690.56(C)(2) TURN RAPID SHUTDOWN SWITCH TO THE "OFF" POSITION TO SHUTDOWN PV SYSTEM AND REDUCE SHOCK HAZARD IN ARRAY SOLAR PV SYSTEM EQUIPPED WITH RAPID SHUTDOWN SOLAR ELECTRIC PV PANELS IFC 605.11.3.1(1) & NEC 690.56(C) WARNING COMBINER BOX / CIRCUITS / CONDUIT COMBINER BOX / EMT ENCLOSURES ELECTRICAL SHOCK HAZARD TERMINALS ON THE LINE AND LOAD SIDES MAY BE ENERGIZED IN THE OPEN POSITION PER NEC 706.15(C)(4) NEC 690.13(B) TURN OFF PHOTOVOLTAIC AC DISCONNECT PRIOR TO WORKING INSIDE PANEL PER NEC 110.27(C) & OSHA 1910.145(f)(7) WARNING PER NEC 690 WARNING DEDICATED PHOTOVOLTAIC SYSTEM COMBINER PANEL NO LOAD SHALL BE ADDED TO THIS PANEL INV-2 INV-3 INV-4 PER NEC 408.4(B) INV-5 PER NEC 690 WARNING PHOTOVOLTAIC SYSTEM COMBINER PANEL DO NOT ADD LOADS N SA N T A A N A D O W T O W N P L A Z A 40 7 E 1 s t S T . , S A N T A A N A , C A 9 2 7 0 1 JO B N U M B E R : AP N : 3 9 8 - 5 1 6 - 1 9 SP R E C K S O L A R & D E S I G N 30 0 0 F D A N V I L L E B L V D . , S U I T E 4 2 2 AL A M O , C A 9 4 5 0 7 41 9 E 1 s t S T . , S A N T A A N A , C A 9 2 7 0 1