Installation Manual
BI 7.2.3-44
June 2018, Rev 4
BI 7.2.3-44
June 2018, Rev 4
13
VII. System Specifications and Ratings
QBoxSpecications:
• Maximum Voltage: 600 Volts
• Maximum Current: 40 Amps
• Allowable Number of Strings: 2
• Allowable Wire:
»
Inputs: 12 AWG - 10AWG
»
Outputs: 12AWG - 8AWG
»
Ground: 12AWG - 6AWG
• Enclosure Rating: Type 3R
• Roof Slope Range: 2.5:12 - 12:12
• Attic Conduit Pass-Through: ¾" EMT
• Max Side Wall Conduit Size: ¾"
• Dimensions:
»
Box: 5.76" W x 5.4"D x 2.6" H
»
Box Volume: 45 in
3
»
Flashing: 12"W x 12"D
• Ambient Operating Conditions: -35°C - 75°C
• Testing has shown that there is a 25.5°C increase in box temperature over ambient when wind speed is less than
1 m/s and solar irradiance in plane of array is 1000 W/m
2
. Temperature rise due to irradiance must be considered
when calculating ambient operating conditions.
• Compliance:
»
QBox: UL1741
»
Approved wire connectors: UL categories ZMVV and ZMWQ that are Listed to UL Standards 486C or 486D.
• System Marking:
• Periodic Re-inspections: If re-inspections yield loose components, loose fasteners, or any corrosion between
components, components that are found to be aected are to be replaced immediately.