Electrical inspectors publication, soares book on grounding and bonding, 9th edition, for added information. Copper clad steel, 19 mm 34 inch diameter by 3000 mm 10 feet long, conforming to ul 467. Completion of all electrical and structural testing for 2703 is expected within 34 weeks including the temperature cycling and structural loading tests. Grounding and bonding with concentric and eccentric. So as you close the book on 2018, and start planning for the year ahead. Ul 2703 recently was elevated from draft standard status to a full ansiaccredited national standard like ul 467 and ul 1703. Use with flatplate photovoltaic modules and panels revision of ansi ul 2703 2019 this proposal for ul 2703 covers. With the ul recognition, the device can be documented for traceability, which means racking manufacturers can utilize weebs in their system if they choose to pursue ul 2703. Rapid shutdown solar energy industries association. Use of these products may cause concern with the authority having jurisdiction ahj, and could lead to a failed inspection. See especially bonding conductor test in table below. This path is intended to carry unwanted and fault currents for protection.
Ul standard ul 2703 edition 1 mounting systems, mounting devices, clampingretention devices, and ground lugs for use with flatplate photovoltaic modules and panels edition date. Size of terminal or bonding conductor 26 16 transformer and power supply secondary grounding 27 17 identi. For the ul product category for metallic outlet boxes qcit, the ul guide informa. Photovoltaic system grounding solar america board for codes. Does the module manufacturer need to list ironridge as a grounding means in their installation manual. State code on september 1 of any year in which the new nec code book is published every three years. These tests are identical to the tests performed in the module listing process ul 1703. Stainless steel hardware for corrosion resistance, greater torque and ease of installation. Fire test the requirements in this part refer to the new fire test in new ul1703. Connector shall be ul listed for the purpose always. The ul 2703 grounding bonding certification has sparked the question among manufacturers and ahjs regarding bonding the balance of conductive roof mounted pv equipment, i. The points of attachment of the bonding jumpers shall be accessible.
In numerous test on soil with uniform soil resistivity it has been. Grounding component for solar installations is ul 2703. Connections to the tmgb shall be made by exothermic welding or by listed twohole compression lugs. Anyone directly involved with a product including manufacturers, owners, contractors, and regulatory authorities can.
Connected to establish electrical continuity and conductivity. Ul is developing a new pv racking standard 2703 ul. Bonding device helps solve solar panel installation challenges. This eliminates the need for additional bonding components. Ul su 2703 bonding tests completed type of equipment. Proper installation of bonding and bonding jumpers c. Sun ul 2703, mounting systems, mounting devices, clamping.
Ul 2703 mounting systems, mounting devices, clampingretention devices, and ground lugs for use with flatplate photovoltaic modules and panels 1st edition was published on january 28, 2015. Installers, contractors and local authorities having jurisdiction ahjs may reject a ul 467 certifiedlisted device if used in the pv industry. The ul 2703 standard is intended to cover all equipment related to bonding and. To bond one end of the service raceway to the service neutral conductor, you must use a listed bonding wedge or bushing with a bonding jumper. Bonding conductor test ul 3703, clause 22 part a, ul 2703, clause 45 part a bonding path resistance ul1703 clause 25.
Cable installation manual for power and control cables. Ul file e354420 green color, universal to identify ground aids in visual inspection. Ul offers a field evaluation service that provides data to assist you in making your decision whether to accept the product andor approve the installation. Please add this email address to your address book or email whitelist to. The newly published ul 2703 mounting systems, mounting devices, clampingretention devices, and ground lugs for use with flatplate photovoltaic modules and panels not only addresses pv mounting rack constructional requirements but also includes bonding and grounding requirements to assure electrical continuity and the prevention of shock hazards. Install grounding and bonding systems knowledge of. Supporting electrical panels and equipment would be mounted on the side of the structures. The ul 2703 groundingbonding certification has sparked the question among manufacturers and ahjs regarding bonding the balance of conductive roof mounted pv equipment, i. Ul standard ul 2703 edition 1 mounting systems, mounting devices, clampingretention devices, and ground lugs for use with flatplate photovoltaic.
Grounding and bonding devices as well as mounting and racking systems specifically evaluated for pv systems are ul certified listed under the product category mounting systems, mounting devices, clamping devices and ground lugs for use with photovoltaic modules and panels qims located on page 343 in the 20 ul white book and also online at. The rl universal components that have been evaluated for bonding are the mount assembly. Metal frame of the building or structure where the following methods are used to make an earth connection. With over 1,000 standards available for delivery in hardcopy, pdf, or electronic html formats, if youre looking for a ul standard youve come to the right place. These include pv rapid shutdown changes in the national electrical code and. Bonding strap pull ansi ul 2703 23 bonding conductor ansi ul 2703 22 hot spot endurance ansi ul 170339. Do not daisy chain bonding conductors from device to devices. Ul standards purchase ul standards online ul standards. Section 1206 for electrical energy storage systems. The tests performed cover the following basic module parameters. Nfpa 70 nec articles for use, installation, and construction specifications for grounding and bonding b. The bonding jumpers shall be sized in accordance with 250. Gamechange rackings solar ground system does well in testing.
As soon as modules are installed using a panelclaw system, an electrical. To meet ul 2703 requirements, mounting and clamping devices are submitted to rigorous testing methods to confirm the products will. For the ul product category for metallic outlet boxes qcit, the ul guide information indicates all boxes with concentric or eccentric knockouts have been investigated for bonding and are suitable for bonding without any additional bonding means. Second issuance of ul subject 2703 november, 2012 will most likely only require a few retests. Conducting field verification of existing grounding electrode systems installing proper system grounding per nfpa 70 and manufacturer specifications grounding electrode conductor gec. Bonding conductors shall be astm b8 bare stranded copper, except that sizes 6 mm. When fire tested in accordance with ul 2703 and installed in accordance with. The product was tested as indicated below with results in conformance to the relevant test criteria. Cab integrated grounding now etl safety listed to ul2703. Aceclamppmc authorized to apply ul mark to products.
May be revised based upon large scale fire testing per ul 9540a. These requirements also cover ground bonding paths, mechanical strength and suitability of materials. The ansi ul 2703 mechanical strength, electric bonding and grounding, and fire performance. Jan 14, 2014 the two systems passed the required current bonding conductor test at 25 amps and the humidity chamber test. Ul su 2703 bonding tests completed ecolibrium solar. The neutral on a wye system is a prime example of a grounded conductor. Ul 1703 and 2703 activities ul 1703 changes expanded definitions. Snapnrack rl universal system has been evaluated by underwriters laboratories ul and listed to ul standard 2703 for groundingbonding, and fire classification.
This racking system may be used to ground andor mount a pv module complying with ul 1703 only when the specific module has been evaluated for grounding andor mounting in compliance with the included instructions. Devices such as wiley electronics washer electrical. Install all cable tray to meet the grounding and bonding requirements of nec articles 110. The equipment grounding conductor for the circuit that is likely to energize the piping shall be permitted to serve as the bonding means. Grounding electrode system and grounding electrode conductor part iii znec 250. Jan 02, 2014 the washer is compliant with the nec, etl listed to ul 467 test requirements for grounding and bonding, and ul recognized to ul 2703 for rack mounting and clamping devices. Product certified to the second issuance of ul subject 2703 november, 2012 will most likely only require a few retests.
Dec 01, 2011 ul 2703 is a new solar grounding specification that covers rack mounting systems and clamp devices intended for use with photovoltaic module systems with a maximum system voltage of v. There is some confusion regarding the differences in grounding and bonding requirements and testing. The washer is compliant with the nec, etl listed to ul 467 test requirements for grounding and bonding, and ul recognized to ul 2703 for rack mounting and clamping devices. Location of grounding conductors in a grounded pv system.
The ul 2703 standard is intended to cover all equipment related to bonding and grounding of pv modules and their support structures. Bonding testing, mechanical load testing and fire testing. Guide information for electrical equipment the white book 201516 ul product categories correlated to the 2011 and 2014 national electrical code ul s general guide information is updated daily. As a result, the ul 2703 listing covers both products, not just the mounting components. What exactly does ul 2703 approval mean and which of your. The system ground connection, made by a system bonding jumper, is the path that. Thus, the testing for photovoltaic panel systems are covered in both ul 1703 and ul 2703. The ul 2703 certification process includes extensive testing of the ironridge components with the module.
Grounding and bonding with concentric and eccentric knockouts bonding at services nec section 250. Alternative bonding jumpers are not included within the ul 2703 listing. Snapnrack ultra rail system has been evaluated by underwriters laboratories ul and listed to ul ansi standard 2703 for grounding bonding, mechanical loading, and fire classification. The new ul 2703 standard, which is an ansi consensus standard, provides the test method for testing multiple panels for each racking system. The ultra rail system has been designed in compliance with ul standard 2703 section 9. Groundingbonding only specific components have been evaluated for bonding, and are identified as being in the ground path. Ul2703 released and being enforced amphenol industrial. Standards since 1903, ul has been creating standards for product safety. Product certified to the first issuance of ul subject 2703 october 10, 2010 will most likely require full reexamination and test. Section 26 05 26 grounding and bonding for electrical systems. There is a bit of a myth that all grounding devices must be tested individually with every pv. A copper conductor grid shall be provided and shall comply with b1 through b4.
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