I found this resource on Mike Holt’s website to be very helpful when producing a quote a customer wanted. Mike Holt Enterprises offers a lot of electrical training literature. This article and the guidelines deal with the nuances of the generational NEC code when doing generator installs. For your info Washington State has adopted the 2020 NEC
In the wake of hurricane Ida, when so many people are still without power, now would be a good time to review the NEC requirements for generators and standby power systems, and share them with your customers so that they stay safe. I am also including a spreadsheet calculator. I hope you find it has value.
This PDF on Generators and Standby Power Systems, based on the 2020 NEC includes rule 220.87 and Articles 445, 700, 701 and 702. You can download and print using the following links:
2020 NEC Generators and Standby Power Systems
2017 NEC Generators and Standby Power Systems
2014 NEC Generators and Standby Power Systems
Generator Sizer Calculator. Please click here to download Mike’s spreadsheet on sizing home generators.
Backup Power Systems. Understanding portable generators is key to staying safe. It has been reported that the majority of deaths (8 out of 15) in Louisiana as a result of Hurricane Laura were linked to carbon monoxide poisoning from portable generators.
Download and print this PDF What You Should Know About Backup Power Systems. It’s a great tool for you and your customers.
Here’s where to find the PDF:
Click here or on the image to the right to open and download the PDF, or
Go to the Free Publications page on the Mike Holt website for this and other free PDFs
These pages are extracted from Mike Holt’s Illustrated Guide to Understanding the National Electrical Code Volumes 1 and 2, based on the 2020 NEC. Click here to purchase or review these textbooks and other products from Mike’s Understanding the National Electrical Code series.