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December Tips 2023

Updated: Apr 1

Structural Tip: Deck Mounting Approval Requirements

Many residential solar installers prefer deck mounting, rather than rafter mounting, because attachment points are easier to locate when deck mounts are used. However, deck mounting has limited applications, and the approval requirements vary. To avoid equipment modifications, consider the following before choosing deck mounts:


1. Deck mounts can only be approved for installation to rated sheathing (Plywood or OSB),as opposed to lumber or plank sheathing.


2. For wood decking, deck mounts require a minimum of (4) #10 x 2" Wood Screws. If the deck is metal, please refrain from using deck mounts.


3. For flat roofs (pitch < 10 degrees) we recommend:

  • ECO-44R-NDD

  • RT Mini

  • Unirac FlashLoc RM

  • U-Anchor

  • OMG Power Grip

  • Or similar which can accommodate at least (4) fasteners


4. For pitched roofs (pitch >10 degrees), we recommend:

  • RT Mini

  • Unirac FlashLoc DUO

  • Splice Foot XL (with (4) #12 Wood Screws, for wood decking)

  • Or similar which can accommodate at least (4) fasteners


For questions regarding our structural services, please email support@creng.solar.


 

Electrical Tip: Matching Service Requirements with Main Breaker Size

Updated on 3/28/2024

We use the main breaker size, shown in a 3-line diagram, and the minimum service requirement, listed in a project's load calculations, to calculate the total allowable current (backfeed). If the min. service requirement is greater than the main breaker size, we place your project on hold so we can coordinate with you.


To streamline your projects, please check that the min. service requirement (right) is less than or equal to the main breaker size (left).


Main breaker size in a 3 line diagram, and minimum required service load in load calculations.
Main breaker size in a 3-line diagram, and minimum required service load in load calculations.

For questions regarding our electrical services, please email support@creng.solar.


 

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