Specifications Sheet
JB-1.XL
Specification Sheet
PV Junction Box for Composition/Asphalt Shingle Roofs
• Maximum Voltage: 1,000 Volts
• Maximum Current: 120 Amps
• Allowable Wire: 14 AWG – 6 AWG
• Spacing: Please maintain a spacing of at least ½” between uninsulated live parts and fittings for
conduit, armored cable, and uninsulated live parts of opposite polarity.
• Enclosure Rating: Type 3R
• Roof Slope Range: 2.5 – 12:12
• Max Side Wall Fitting Size: 1”
• Max Floor Pass-Through Fitting Size: 1”
• Ambient Operating Conditions: (-35°C) - (+75°C)
• Compliance:
- JB-1.XL: UL1741
- Approved wire connectors: must conform to UL1741
• System Marking: Interek Symbol and File #5019942
• Periodic Re-inspections: If re-inspections yield loose components, loose fasteners, or any corrosion
between components, components that are found to be affected are to be replaced immediately.
A. System Specifications and Ratings
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