How to Choose the Right Generator for Your Home: Home Generators and the Total Connected Electric Load.

### How To Hook Up a Generator to the House Panel Using a Circuit Breaker Interlock Kit For Backup Power

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How to Choose the Right Generator for Your Home
Electrical Question: Will a 5000watt generator be large enough for my home?

• I want to have a manual transfer switch installed, just went five days with no water after Irene on a well.
• My well is on a double breaker so I assume it is 220 and they are both 20 amp breakers, will my Centurion 5000 watt generator with A/C Rated Output Watts: 5000 and A/C Maximum Output Watts: 6250 power it?
• So doing the math, 5000 watts divided by 110 volts gives me 45 amps per circuit? So a 220 circuit for the water heater with two 30 amp breakers is possible also?
• Obviously, I understand that with some of the larger appliances I can only have one item powered at a time.

Thanks for the help!

This electrical question came from: Greg, from Hollywood, Maryland.

Thanks for your electrical question Greg.

## How to Choose the Right Generator for Your Home

Yes, when you do the basic math it does appear that the 5000 watt generator will work, however there is one factor that you must consider, and it is this one item that is often overlooked when choosing a home generator that is to be used for well pumps, motor loads and other larger electrical devices.

### Home Generators and the Total Connected Electric Load

• The Total Connected Load is one factor when selecting a generator, but the size of the motor is another very important factor.
• Motors require many times more than the FLA or Full Load Amps when the motor first starts.
• LRA or Locked Rotor Amps is the amount of energy that is required to start an electric motor and this amount of power must be at least 80% of the Rated Capacity of the generator that will be selected.
• Keep in mind that this is ONLY for the motor load, and not other loads that may be connected at the same time the well pump is started.
• If the generator is rated too small then you risk overloading the generator and much worse than that, you risk burning out your well pump because when the correct amount of power is not available then the voltage drops down and this will cause the motor to overheat and possibly become damaged.
• As with any electrical circuit, the voltage drop must be considered as well which is determined using many factors that are based on the specific circuit and the length of the wire to provide power for the device.

IMPORTANT
Make sure the manufacturer of the generator specifically states that the generator will work with your electrical load specifications including Well Pumps and other Motor Loads.

Home Electric Generators

### Selecting and Installing a Home Electric Generator

This series covers a wide variety of topics all about home generators including sizing, selecting, connecting and safely operating this all important addition to your home.

### Home Electrical Circuit Breakers

• A guide to home electrical circuit breakers and how they work to protect your electrical wiring.
When properly installed, your home electrical wiring is protected by a circuit protection device.

### Wiring 220 Volt Electrical Outlet

Home electrical wiring includes 110 volt outlets and 220 volt outlets and receptacles which are common place in every home. See how electrical outlets for the home are wired.

Electrical Calculations and Formulas

The following may also be helpful for you:

### Wire a GFCI Outlet without a Ground Wire

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## See All My Videos Here!

with my online Video Course:
Basic Home Electrical Wiring by Example

## 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.

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 Generator and Home Electrical Wiring: « Previous Next » Four Wire Oven to a Three Wire Circuit Understanding the Capacity of Electric Generators