Sub Panel Grounding and Neutrals
|
Understanding Grounding for Sub Panels: When you add a second electrical panel with separate neutral and common bars, do you ground the common to the box along with a ground rod connection?
© By: Dave Rongey
|
Understanding Grounding for Sub Panels
Question: When you add a second electrical panel with separate neutral and common bars, do you ground the common to the box along with a ground rod connection?
Thanks.
John
This electrical question came from: John, a Homeowner from Manitowoc, WI.
Additional Comments: I have recently retired due to a disability. I just love this site thank you so much.
Dave’s Reply:
Thanks for your electrical question John, I hope your doing well, and Thanks for the nice complement.
IMPORTANT:
This article refers to sub panels that are located in an attached building, or the same building structure. For information about a sub panel located in a detached or remote building please see the following article which discusses the topic of grounding for a Detached Building in detail: Installing a Sub Panel for a Detached Building
Grounding for a Sub Panel Located in the Same Building
- A second panel or sub panel should have the neutral and ground terminals or bars isolated from each other, this is why the main circuit feed to the sub panel must have 4 wires, with a dedicated insulated wire for the neutral and a separate wire for the ground.
- All the ground wires bond back at the main panel together with the neutrals.
- The sub panel neutral bar or terminal should not be bonded to the enclosure or the ground of the sub panel. The sub panel ground should not have a ground rod tied to it.
- The bonding for the main ground sources such as a ground rod is made at the main panel where all the grounds are bonded together as well.
The Following links will assist you with Grounding for Sub Panels
House Wiring Circuits and Circuit Breakers
This article looks at common 120 volt and 240 volt house wiring circuits and the circuit breakers that are installed identifying the types and amperage sizes used in most homes.
Electrical Grounding
Electrical Grounding Methods and Requirements
Listing of electrical codes for grounding with examples of electrical grounding codes for home electrical wiring.
The following may also be helpful for you:
A Complete Guide to Home Electrical Wiring
Be sure to get your copy of my BIG Book:
Perfect for Homeowners, Students and Electricians
Includes:
Home Electrical Wiring - Room by Room
120 Volt Circuits
240 Volt Circuits
Multi-Wired Circuits
Wiring Methods for Installing Home Electrical Circuit Wiring
Electrical Codes for Home Electrical Wiring
....and much more.
|
Be Careful and Be Safe - Never Work on Energized Circuits!
Consult your Local Building Department about Permits and Inspections for all Electric Wiring Projects.
Electrical Tips to Help You Wire it Right
|
The Safest Way to Test Electrical Devices and Identify Electric Wires!
The Non-Contact Electrical Tester
This is a testing tool that I have had in my personal electrical tool pouch for years, and is the first test tool I grab to help identify electrical wiring. It is a Non-contact tester that I use to easily Detect Voltage in Cables, Cords, Circuit Breakers, Lighting Fixtures, Switches, Outlets and Wires. Simply insert the end of the tester into an outlet, lamp socket, or hold the end of the tester against the wire you wish to test. Very handy and easy to use.
The Quickest Way to Check for Faulty Electrical Wiring!
The Plug-In Outlet Tester
This is the first tool I grab to troubleshoot a problem with outlet circuit wiring. This popular tester is also used by most inspectors to test for power and check the polarity of circuit wiring.
It detects probable improper wiring conditions in standard 110-125 VAC outlets
Provides 6 probable wiring conditions that are quick and easy to read for ultimate efficiency
Lights indicate if wiring is correct and indicator light chart is included
Tests standard 3-wire outlets
UL Listed
Light indicates if wiring is incorrect
Very handy and easy to use.
Strip Off Wire Insulation without Nicking and Damaging the Electric Wire!
The Wire Stripper and Wire Cutter
My absolute favorite wire stripping tool that I have had in my personal electrical tool pouch for years, and this is the tool I use to safely strip electrical wires.
This handy tool has multiple uses:
The wire gauges are shown on the side of the tool so you know which slot to use for stripping insulation.
The end of the tool can be used to grip and bend wire which is handy for attaching wire onto the screw terminals of switches and outlets..
The wire stripper will work on both solid and stranded wire. This tool is Very Handy and Easy to Use.
|
Electrical Parts to Help You Wire it Right
Circuit Breakers, Panels, Parts and Accessories
Circuit Breaker Siemens ITE
Circuit Breaker ITE GFCI
Circuit Breaker ITE AFCI
Circuit Breaker Square D
Hot Tub Panel
Sub Panel 120 240volt 100amp
Sub Panel 120 240volt 125amp
Panel 120 240volt 200amp
|
More about: Sub panel grounding and neutrals
Sub Panel Grounding and Neutrals
Grounding a Panel in a Detached Building
Upgrade an Electrical Panel and Install a Home Generator
Installing a Green Ground Screw in a Panel
Grounding Home Electrical Circuits
Hot Tub Grounding and Neutral Requirements
Grounds and Neutrals in Electrical Panel
Electrical Panel Ground and Neutral Bonding
- Sub Panel Grounding and Neutrals
Understanding Grounding for Sub Panels: When you add a second electrical panel with separate neutral and common bars, do you ground the common to the box along with a ground rod connection?
Top of List DIY Home Electrical Wiring Projects
- Grounding a Panel in a Detached Building
The Electrical Codes for the Grounding System of a Sub Panel in a Detached Building Explained
Top of List DIY Home Electrical Wiring Projects
- Upgrade an Electrical Panel and Install a Home Generator
Planning and Installing a Home Generator Power System: The complete home electrical system should be considered when installing a home generator system and transfer switch. Upgrading portions of an aging home electrical system is advisable. Here are some key factors that you should consider before attempting such a project.
Top of List DIY Home Electrical Wiring Projects
- Installing a Green Ground Screw in a Panel
How to Bond the Ground Using the Green Grounding Screw of a Sub Panel: Grounding a Main Panel vs Grounding a Sub-Panel, Bonding the Ground System at the Main Electric Service Panel, When Two Terminal Strips are Connected Together, The Difference between Ground Terminals and Neutral Terminals
Top of List DIY Home Electrical Wiring Projects
- Grounding Home Electrical Circuits
When installing new electrical wire where do I connect the ground wire? How to Install Ground Wires for Home Electrical Circuits, Common Methods for Grounding Home Electrical Circuits, Ground Buss and Ground Bars, Grounding at the Panel, Grounded Circuit Cables.
Top of List DIY Home Electrical Wiring Projects
- Hot Tub Grounding and Neutral Requirements
GFCI Wiring and Connections for Hot Tub Electrical Circuit Panel: Essentials for your installation, including the required GFCI ground fault protection and circuit wire size.
Top of List DIY Home Electrical Wiring Projects
- Grounds and Neutrals in Electrical Panel
How to Wire Grounds and Neutrals in Sub Panels - all the neutrals and ground wire and terminal bars must be separated from each other, and your sub feed should be a 4-wire cable that has a separated insulated neutral wire and a separate ground wire.
Top of List DIY Home Electrical Wiring Projects
- Electrical Panel Ground and Neutral Bonding
How Grounds and Neutrals are Configured in Electrical Panels - Why Grounds and Neutrals are Bonded at the Main Electrical Panel - The main electrical panel or the main source of the electrical power is where the neutral and grounds are bonded together.
Top of List DIY Home Electrical Wiring Projects
|
More articles about Grounding and Home Electrical Wiring:
|
|
« Previous |
Next » |
|
|
|
