Available Fault Current | JADE Learning

Preparing for the Wisconsin Electrical Journeyman Exam

To help you prepare for the Wisconsin Journeyman Electrician Exam, we’ve gathered some information on what you can expect on the exam — plus some tips to help you pass.

Read Article

Most Recent

How to Prepare for the Washington Electrical Exam

Before you become a journey-level or master electrician in Washington, you must pass an exam. Here’s what you can expect on the exam and some tips to help you pass.

Read Article
How Electricians Can Make Money Installing EV Charging Stations

Tap into the growing demand for electric vehicle charging stations to increase your income and reach new customers as a licensed electrician.

Read Article
2023 NEC Section 210.8(B): GFCI Protection, Other Than Dwelling Units

These are some updated code changes and exceptions in section 210.8(B), which covers GFCI rules for personnel, other than dwelling units.

Read Article
The De-Centralized Central Station

This blog discusses the sustainability of central alarm stations hiring remote workers and the pros and cons that come with remote vs. in-person work.

Read Article

Recently in

Short-Circuit Current-Rating (SCCR) VS. Available Fault Current: Understanding the Maze and What’s New for 2020

Section 408.6: A Brand-New Addition to the 2020 NEC
NEC section 408.6 states: Switchboards, Switchgear, and Panelboards shall have a short-circuit current rating (SCCR) not less than the available fault current.  In other than one- and two-family dwelling units, the available fault current and the date the calculation was performed shall be field marked on the enclosure at the point of supply. The marking shall comply with 110.21(B)(3).

Making NEC 408.6 Simple
This new Code Section simply means that electrical panels including main-breaker and main-lug type panels and switchboards & switchgear equipment must be rated (in amps) to withstand the high levels of current that will flow should a short-to-ground or other fault occur at the equipment. In ALL locations other than dwelling units, that anticipated fault current must be marked on the equipment enclosure near where the supply conductors enter in, along with the date that the calculation producing that number was performed. The new Code Section also says the markings on the equipment must comply with 110.21(B)(3). Section 110.21(B)(3) tells us that markings must be sufficiently durable to withstand the environment.

Read Article

Selecting the Short Circuit Current Rating of Equipment

In the Summer Newsletter article, we discussed marking our service equipment with the maximum Available Fault Current (AFC) as well as the date the fault current calculation was performed to comply with NEC 110.24(A). We selected circuit breakers with an AIC rating equal to or greater than the AFC. So […]

Read Article

Preparing for the Wisconsin Electrical Journeyman Exam

Most Recent

How to Prepare for the Washington Electrical Exam

How Electricians Can Make Money Installing EV Charging Stations

2023 NEC Section 210.8(B): GFCI Protection, Other Than Dwelling Units

The De-Centralized Central Station

Recently in

Short-Circuit Current-Rating (SCCR) VS. Available Fault Current: Understanding the Maze and What’s New for 2020

Selecting the Short Circuit Current Rating of Equipment

Passing Your Journeyman or Master Exam Starts Here.

JADE Learning’s Online Exam Preparation. Practice at Home. On Your Schedule.

Login