Electrical Training and Certified Electricians wiring recessed light fixtures Electrical Wiring Electrical Troubleshooting and Electrical Repairs wire outdoor light fixture Home Residential Electrical Codes and Wiring Diagrams
wiring home generator and transfer switch wiring a 220 volt range cord outlet Wiring for GFCI Outlets Wiring Outlets and a Switched Outlet Wiring and Installing Ceiling Fans and Remote Controls wire dimmer switch wiring diagrams for switches wiring a dryer cord and 220 outlet circuit breaker panel
Electrical Wire and Cable
Electrical eBooks

How to Install and Wire a Sub-Panel


electrical-panel-wiring ©Copyright -
Summary: Electrical Sub-Panel wiring considerations for the home complete with pictures. Careful planning for your Sub-Panel with immediate and future load considerations will help you understand how to size your Sub-Panel. This information will help as you consider a Sub-Panel and its size.


How to Install and Wire a Sub-Panel the Right Way




Make a List of all the things you plan to use

120 volt devices
Lighting
Electrical Convenience Outlets
GFCI Protected Outlets

240 volt equipment
Motor Loads:
Hot Tubs [see the Hot Tub Page]
Well Pumps
Air Conditioners
Sub-Panel Considerations-
Correct amperage for all existing loads and future requirements.




Considerations to help determine Sub-Panel Circuit Requirements:

Important Factor: Find out if the Main Service or the Panel that will supply the Sub-Panel Circuit have adequate Load Capacity and space for the needed circuit breaker.

How big should your Sub-Panel be ? (Watts and Amperage)
This will help you consider the circuits to be served by the Sub-Panel including general purpose electrical outlets and any special equipment which will be needed.

Special Considerations:
Large 220 Volt Loads such as Welders, Air Conditioners, Motors, Well Pumps and the like may require larger size wire and conduit to provide the necessary current this equipment requires. Be sure to list all the label requirements and manufacturers specifications.
Long Distances from the power source will produce Voltage Drop, especially over 175 feet. A 2% Voltage drop factor and correction will most likely require an increased size of the wire and conduit.

Wire Types and Capacities
Cables and common wire types

Devices and Junction Boxes
Select the right box for your application



120/240 Volt Sub-Panel Circuit Requirements
4-Wire System consisting of:
2-Insulated Power Conductors (Black & Red)
1-Insulated Neutral Conductor (White)
1-Ground Conductor (Bare or Green)


Don't Make This Mistake!
[click pictures to enlarge]

Illegal Electrical Sub-Panel Electrical Sub-Panel



electrical_contractors


Be Sure to Get Your Copy Today!
A Complete Guide to Home Electrical Wiring
Perfect for Homeowners, Students and Electricians
Includes:
Home Electrical Circuit Breakers
120 Volt Circuits
240 Volt Circuits
Multi-Wired Circuits
Wiring Methods for Installing Electrical Circuit Wiring
Electrical Codes for Home Electrical Wiring
....and much more.

» Click here to learn more about Home Electrical Wiring «
  electrical wiring  


Top of Page


Site Terms | Disclaimer | | Privacy Policy | Disclosure Policy
Site Map | Trademark Copyright Information | Contact Dave | Electrical Troubleshooting Blog


Do You Need Electrical Help? Ask an Electrical Question

© Copyright Ask-The-Electrician.com
Part P - Electrical Safety is registered Crown Copyright of the UK Government Planning Department for Communities
CE and Canadian Electrical Code CSA C22.1 are registered trade marks of the Canadian Standards Association (CSA)
NEC and National Electrical Code are registered trade marks of the National Fire Protection Association (NFPA)