{"product_id":"ez-solar-jb-3-rooftop-pv-junction-box-rail-mount","title":"EZ Solar JB-3 Rooftop PV Junction Box, Rail Mount","description":"\u003cdiv class=\"sapphire-product-content\"\u003e\n\n\u003ch2 class=\"sapphire-section-title\"\u003eA Cleaner Way to Manage Rooftop PV Connections\u003c\/h2\u003e\n\u003chr class=\"sapphire-hr\"\u003e\n\n\u003cp class=\"sapphire-p\"\u003eThe \u003cstrong\u003eEZ Solar JB-3\u003c\/strong\u003e is a rail-mounted rooftop junction box designed to provide a protected location for PV wire transitions, splices, terminal blocks and other exterior electrical connections.\u003c\/p\u003e\n\n\u003cp class=\"sapphire-p\"\u003eFlexible stainless-steel clamps allow the enclosure to mount directly to rounded or squared racking profiles, including \u003cstrong\u003eKinetic Solar racking rails and Unistrut-style channel\u003c\/strong\u003e. Its self-leveling design keeps installation straightforward while the UV-resistant polycarbonate enclosure provides long-term outdoor durability.\u003c\/p\u003e\n\n\u003ch2 class=\"sapphire-section-title\"\u003eWhy You'll Love It\u003c\/h2\u003e\n\u003chr class=\"sapphire-hr\"\u003e\n\n\u003cul class=\"sapphire-checklist\"\u003e\n\u003cli\u003eCompatible with Kinetic Solar racking rails\u003c\/li\u003e\n\u003cli\u003eMounts to standard Unistrut-style channel\u003c\/li\u003e\n\u003cli\u003eFits many rounded or squared solar racking profiles\u003c\/li\u003e\n\u003cli\u003eNo additional roof penetration required for mounting\u003c\/li\u003e\n\u003cli\u003eSelf-leveling stainless-steel rail clamps\u003c\/li\u003e\n\u003cli\u003eType 3R rainproof enclosure for outdoor installations\u003c\/li\u003e\n\u003cli\u003eUV-resistant polycarbonate construction\u003c\/li\u003e\n\u003cli\u003eIncludes a DIN rail and five-port grounding bar\u003c\/li\u003e\n\u003cli\u003eSuitable for PV systems up to 1,000V and 80A\u003c\/li\u003e\n\u003cli\u003eUL 1741 and CSA C22.2 No. 290 compliant\u003c\/li\u003e\n\u003cli\u003eMade in the USA\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 class=\"sapphire-section-title\"\u003eVersatile Rail \u0026amp; Channel Mounting\u003c\/h2\u003e\n\u003chr class=\"sapphire-hr\"\u003e\n\n\u003cp class=\"sapphire-p\"\u003eThe included stainless-steel clamps allow the JB-3 to attach directly to many common solar racking rails and structural mounting channels. This includes \u003cstrong\u003eKinetic Solar racking products, Unistrut-style channel, and other compatible rounded or squared rail profiles\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp class=\"sapphire-p\"\u003eThe enclosure self-levels as the clamps are tightened, making it easy to position beside a solar array or wherever exterior PV wiring needs to be joined, transitioned or routed into conduit.\u003c\/p\u003e\n\n\u003cp class=\"sapphire-p\"\u003eBecause the enclosure mounts directly to the racking or channel, it does not require a separate roof penetration for mounting. A properly flashed penetration may still be required wherever wiring or conduit enters the building.\u003c\/p\u003e\n\n\u003ch2 class=\"sapphire-section-title\"\u003eWhat's Included\u003c\/h2\u003e\n\u003chr class=\"sapphire-hr\"\u003e\n\n\u003cul class=\"sapphire-checklist\"\u003e\n\u003cli\u003eJB-3 polycarbonate enclosure body\u003c\/li\u003e\n\u003cli\u003eRemovable enclosure lid\u003c\/li\u003e\n\u003cli\u003eDIN rail\u003c\/li\u003e\n\u003cli\u003eFive-port grounding bar\u003c\/li\u003e\n\u003cli\u003eTwo stainless-steel rail-mount clamps\u003c\/li\u003e\n\u003cli\u003eLid and mounting hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"sapphire-callout sapphire-callout-yellow\"\u003e\n\u003cdiv class=\"sapphire-callout-title\"\u003eFittings and Electrical Connectors Sold Separately\u003c\/div\u003e\n\u003cp class=\"callout-p\"\u003eConduit fittings, cable glands, strain-relief fittings, wire connectors and terminal blocks must be selected for the specific installation. Use appropriately rated outdoor fittings and electrical components that maintain the enclosure's Type 3R rating.\u003c\/p\u003e\n\u003cp class=\"callout-p\"\u003eThe nonconductive enclosure does not automatically provide bonding between metal conduit fittings. Any required bonding jumpers or other bonding provisions must be installed separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 class=\"sapphire-section-title\"\u003eSpecifications\u003c\/h2\u003e\n\u003chr class=\"sapphire-hr\"\u003e\n\n\u003cdiv class=\"sapphire-table-wrap\"\u003e\n\u003ctable class=\"sapphire-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eEZ Solar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eJB-3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Compatibility\u003c\/td\u003e\n\u003ctd\u003eKinetic Solar rails, Unistrut-style channel, and compatible rounded or squared racking profiles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum System Voltage\u003c\/td\u003e\n\u003ctd\u003e1,000V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Current\u003c\/td\u003e\n\u003ctd\u003e80A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAllowable Conductor Range\u003c\/td\u003e\n\u003ctd\u003e14–6 AWG copper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Conductor Temperature Rating\u003c\/td\u003e\n\u003ctd\u003e75°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Rating\u003c\/td\u003e\n\u003ctd\u003eType 3R\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Material\u003c\/td\u003e\n\u003ctd\u003eUV-resistant polycarbonate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Sidewall Fitting Size\u003c\/td\u003e\n\u003ctd\u003e1 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Floor Pass-Through Size\u003c\/td\u003e\n\u003ctd\u003e1 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoof-Slope Range\u003c\/td\u003e\n\u003ctd\u003e2.5:12 to 12:12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmbient Operating Temperature\u003c\/td\u003e\n\u003ctd\u003e−35°C to +75°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompliance\u003c\/td\u003e\n\u003ctd\u003eUL 1741 and CSA C22.2 No. 290\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertification\u003c\/td\u003e\n\u003ctd\u003eIntertek, File 5025824\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Manufacture\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2 class=\"sapphire-section-title\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003chr class=\"sapphire-hr\"\u003e\n\n\u003cdiv class=\"sapphire-faq\"\u003e\n\n\u003cdetails class=\"sapphire-faq-item\"\u003e\n\u003csummary\u003eWhat is this junction box used for?\u003c\/summary\u003e\n\u003cdiv class=\"sapphire-faq-body\"\u003e\n\u003cp class=\"sapphire-p\"\u003eThe JB-3 provides a protected outdoor enclosure for rooftop PV wiring connections. It may be used for transitions between PV wire and conduit wiring, cable splices, terminal blocks and other approved electrical connections.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"sapphire-faq-item\"\u003e\n\u003csummary\u003eWill it mount to Kinetic Solar racking?\u003c\/summary\u003e\n\u003cdiv class=\"sapphire-faq-body\"\u003e\n\u003cp class=\"sapphire-p\"\u003eYes. The flexible stainless-steel clamps allow the JB-3 to mount directly to compatible Kinetic Solar racking rails. The self-leveling design makes it easy to position the enclosure beside the solar array.\u003c\/p\u003e\n\n\u003cdiv class=\"sapphire-cta-group\"\u003e\n\u003ca class=\"sapphire-cta\" href=\"https:\/\/sapphirebattery.ca\/collections\/solar-racking\" target=\"_blank\" rel=\"noopener\"\u003eShop Solar Racking\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"sapphire-faq-item\"\u003e\n\u003csummary\u003eWill it mount to Unistrut-style channel?\u003c\/summary\u003e\n\u003cdiv class=\"sapphire-faq-body\"\u003e\n\u003cp class=\"sapphire-p\"\u003eYes. The stainless-steel clamps can secure the JB-3 to standard Unistrut-style structural channel, making it useful for ground-mounted arrays, equipment racks, pole-mounted systems and other custom solar structures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"sapphire-faq-item\"\u003e\n\u003csummary\u003eDoes installation require another roof penetration?\u003c\/summary\u003e\n\u003cdiv class=\"sapphire-faq-body\"\u003e\n\u003cp class=\"sapphire-p\"\u003eThe enclosure mounts to the solar racking or structural channel and does not require a separate mounting penetration through the roof. A properly flashed wire or conduit penetration may still be required wherever the electrical wiring enters the building.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"sapphire-faq-item\"\u003e\n\u003csummary\u003eAre cable glands and conduit fittings included?\u003c\/summary\u003e\n\u003cdiv class=\"sapphire-faq-body\"\u003e\n\u003cp class=\"sapphire-p\"\u003eNo. Cable glands, conduit hubs, strain-relief fittings and other entry fittings must be selected for the installation. Outdoor-rated fittings suitable for a Type 3R enclosure must be used.\u003c\/p\u003e\n\n\u003cp class=\"sapphire-p\"\u003eFor installations using two solar cables, our M20 dual cable gland provides a weather-resistant entry point for two cables up to 6mm in diameter.\u003c\/p\u003e\n\n\u003cdiv class=\"sapphire-cta-group\"\u003e\n\u003ca class=\"sapphire-cta\" href=\"https:\/\/sapphirebattery.ca\/products\/dual-cable-gland-2x6mm-m20\" target=\"_blank\" rel=\"noopener\"\u003eView Dual Cable Gland\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"sapphire-faq-item\"\u003e\n\u003csummary\u003eAre wire connectors or terminal blocks included?\u003c\/summary\u003e\n\u003cdiv class=\"sapphire-faq-body\"\u003e\n\u003cp class=\"sapphire-p\"\u003eThe enclosure includes a DIN rail and five-port grounding bar, but application-specific terminal blocks, wire connectors and splicing components are not included. These components must be appropriately rated for the system voltage, current and conductor sizes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"sapphire-faq-item\"\u003e\n\u003csummary\u003eWhat does a Type 3R enclosure rating mean?\u003c\/summary\u003e\n\u003cdiv class=\"sapphire-faq-body\"\u003e\n\u003cp class=\"sapphire-p\"\u003eType 3R indicates an outdoor enclosure designed to provide protection against falling rain, sleet and external ice formation. It is not intended for submersion or high-pressure water exposure, and all fittings and cover hardware must be installed correctly to maintain the rating.\u003c\/p\u003e\n  \u003cp class=\"sapphire-p\"\u003eIt is not a requirement, but it is recommended to install the JB under a panel to offer additional weather protection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"sapphire-faq-item\"\u003e\n\u003csummary\u003eDoes the enclosure need to be grounded?\u003c\/summary\u003e\n\u003cdiv class=\"sapphire-faq-body\"\u003e\n\u003cp class=\"sapphire-p\"\u003eThe polycarbonate enclosure is nonconductive and does not itself require grounding. However, it also cannot provide electrical bonding between metal conduit fittings. Any required equipment grounding conductors, bonding jumpers or grounding components must be installed separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"sapphire-faq-item\"\u003e\n\u003csummary\u003eWhat conductor sizes can be used?\u003c\/summary\u003e\n\u003cdiv class=\"sapphire-faq-body\"\u003e\n\u003cp class=\"sapphire-p\"\u003eThe enclosure supports copper conductors from 14 to 6 AWG with insulation rated for at least 75°C. The allowable range of an individual terminal block or wire connector may be narrower, so every connection component must be verified separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"sapphire-faq-item\"\u003e\n\u003csummary\u003eWhat's the max voltage solar array?\u003c\/summary\u003e\n\u003cdiv class=\"sapphire-faq-body\"\u003e\n\u003cp class=\"sapphire-p\"\u003eThe JB-3 is rated for PV systems up to 1,000V and 80A max. All fittings, conductors, terminal blocks and connectors installed inside the enclosure must also be appropriately rated for the highest system voltage present.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"sapphire-callout sapphire-callout-blue\"\u003e\n\u003cdiv class=\"sapphire-callout-title\"\u003eNeed Help With Your Rooftop Wiring?\u003c\/div\u003e\n\u003cp class=\"callout-p\"\u003eContact us if you need help confirming Kinetic rail or Unistrut compatibility, or selecting the appropriate PV wire, fittings and grounding or bonding components for your installation.\u003c\/p\u003e\n\n\u003cdiv class=\"sapphire-cta-group\"\u003e\n\u003ca class=\"sapphire-cta\" href=\"https:\/\/sapphirebattery.ca\/pages\/contact\" target=\"_blank\" rel=\"noopener\"\u003eContact Us\u003c\/a\u003e\n\u003ca class=\"sapphire-cta\" href=\"https:\/\/sapphirebattery.ca\/collections\/solar-racking\" target=\"_blank\" rel=\"noopener\"\u003eShop Solar Racking\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"EZ Solar","offers":[{"title":"Default Title","offer_id":52356095738175,"sku":"EZS-1004","price":74.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0914\/6803\/8463\/files\/EZJB3_cover_on_white_bg_1600px_1.png?v=1785802025","url":"https:\/\/sapphirebattery.ca\/products\/ez-solar-jb-3-rooftop-pv-junction-box-rail-mount","provider":"Sapphire Energy","version":"1.0","type":"link"}