» Residential Electrical Wiring Guide to Home Wiring

# Electrical Cables Through Wood Framing

 How to Install Electrical Cables Through Holes When You have a Limited to a Maximum Number of Cables By: Dave Rongey

## How to Wire a GFCI Outlet without a Ground Wire

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How to Install Electrical Cables Through Holes
[ad#block]Electrical Question: Dave, I set and finish the wiring of Modular homes.

• To connect the wiring in the several sections of the house together I must drill through 4- 2 x 10 band joists and feed a large number of separate circuits through the hole.
• There may be as many as 10 to 12 separate Romex cables to feed from one side to the other.
• I previously drilled one or several large holes and pulled as many cables as I could through the hole.
• I have been told that I am now limited to a maximum number of cables that I can put through such a hole. Is this correct and what is that number?

Thanks,
Jack

Background: Jack, a Contractor from Butler, PA. USA

Thanks for your electrical question Jack.

How to Install Electrical Cables Through Holes When You have a Limited to a Maximum Number of Cables

### Electrical Code for Installing Electrical Cables

• NEC 334.80 States that where more than two NM cables containing two or more current-carrying conductors are bundled together and pass through wood framing that is to be fire- or draft-stopped using thermal insulation or sealing foam, the allowable ampacity of each conductor shall be adjusted in accordance with Table 310.15(B)(2)(a). This only requires derating if the hole is to be fire stopped or filled with sealing foam.
• There is no limit as to the size of the hole or the number of cables that may pass through where draft-stop or insulation sealing foam is not used.

### RESOURCES

Electrical Wire for the Home

### Electrical Circuit Wiring

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 Panel Circuit Listing

### Electric Circuit Listing

The size of the home electrical service panel is designed by calculating the square footage of the home and factoring in the code requirements for the electrical circuits that are required.

### Electrical Code Articles for Home Wiring

Electrical Code Directory covering methods for installing electrical-wiring.

### Electrical Wiring Tools

A listing of the electrical tools and drills I use on most all of my electrical jobs and projects.

The following may also be helpful for you:

## Dave's Guide to Home Electrical Wiring:

» You Can Avoid Costly Mistakes! «

Here's How to Do It:
Wire It Right with the help of my Illustrated Wiring Book

Great for any Home Wiring Project.

## Complete Guide to Home Electrical Wiring

Perfect for Homeowners, Students,
Handyman, Handy Women, and Electricians
Includes:
Wiring GFCI Outlets
Wiring Home Electric Circuits
120 Volt and 240 Volt Outlet Circuits
Wiring Light Switches
Wiring 3-Wire and 4-Wire Electric Range
Wiring 3-Wire and 4-Wire Dryer Cord and Dryer Outlet
How to Troubleshoot and Repair Electrical Wiring
Wiring Methods for Upgrading Electrical Wiring
NEC Codes for Home Electrical Wiring
....and much more.

## Learn more about Home Electrical Wiring with my Online Video Course:Basic Home Electrical Wiring by Example

Be Careful and Be Safe - Never Work on Energized Circuits!
Consult your Local Building Department about Permits and Inspections for all Electric Wiring Projects.

## 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.

 More articles about Electrical Code NEC and Home Electrical Wiring: « Previous Next » Permitted Electrical Cords for Dryer Wye and Delta Electrical Configuration