PVeducation.com

All About Solar Electric Systems and Components

  • Welcome
  • About
  • General Information
    • Working Safely with Photovoltaic Systems
    • Climate-101
    • Leasing Solar Systems
  • Solar Module Quality
    • Poor Quality Solar Module
    • Poor Quality Control – Solar Cell Color Differences
    • Snail Trails
  • Solar Concepts
    • Solar Cells, Modules, and Arrays
    • Series and Parallel Wiring
    • Sun Path
    • Solar Azimuth
    • Roof Pitch and Roof Angle (Degrees)
    • Electrical Fundamentals
    • Weight of Typical Pitched Roof Solar System
    • Solar PV Module Efficiency
    • Fixed or Tracking Array
    • Shadow Calculations for Row Spacing
    • Battery State of Charge vs Open Circuit Battery Voltage
    • Solar System Output
    • sREC – Solar Renewable Energy Credits
    • Roof Zones
    • Common Electrical Services
  • Solar System Types
    • Grid Tied Residential and Small Commercial Solar System with String Inverter
    • Grid Tied Residential and Small Commercial Solar System with Micro Inverters
    • Solar System with Direct Load
    • Grid Tied Large Commercial Solar System
    • Off Grid Solar System with DC Loads
    • Off Grid Solar System with DC and AC Loads
    • Grid Tied Battery Backup Solar System
  • Designing an Off Grid Solar Electric System
    • Designing an Off Grid Solar Electric System, Step 1, Planning Considerations
    • Designing an Off Grid Solar Electric System, Step 2, Determine the Total Load
    • Designing an Off Grid Solar Electric System, Step 3a, Determine the Amount of Solar Needed Using an MPPT Controller
    • Designing an Off Grid Solar Electric System, Step 4, Sizing the Battery Bank
    • Stand-Alone Photovoltaic Systems Book
  • System Design Equations
    • Calculate Array Voltage
  • Solar Installation Failures and What Not To Do
    • Squirrel Damage
    • Using the Wrong Disconnect
    • Poor Fused Combiner Design
    • Wrong Conduit
    • Improper Row Spacing
    • Badly Placed Conduit and Bad Roof Penetration
    • Inverter Commissioning
    • Water Filled Enclosures
  • Design Parameters
    • Conductor Ampacity of AL
    • Conductor Ampacity of CU
    • Temp Adjustment Conduit on Roof
    • Conduit Fill Table
    • Adjustment Factors Qty of Conductors
    • Solar Radiation by State
    • US Irradiance Maps
    • Wind Speed, Snow Load, Seismic Ratings, Temperature
You are here: Home / Solar Concepts / Roof Pitch and Roof Angle (Degrees)

Roof Pitch and Roof Angle (Degrees)

The tilt angle of the solar array is taken into consideration when the system is being designed.  The tilt angle in degrees is used when determining the performance of a solar system. If the solar system is being ground mounted or tilted up on a flat roof top the tilt angle is also used to determine the row spacing of the array so the front row of modules will not shade the row of modules behind it. If you are looking at a roof plan for your home or business very rarely will it list the roof pitch in degrees, instead it lists the rise and the run of the roof. For example a 7:12 roof pitch means that for ever 12″ of horizontal distance the roof will increase in height by 7″.  The following diagram will let you easily convert roof pitch to degrees; a 7:12 pitch equals 30.26 degrees.

roof-pitch-to-degrees

View Michael Howell's profile on LinkedIn

Privacy Policy

Terms and Conditions

Copyright © 2023 · Log in