What You Need to Know About Generators

Power outages can happen unexpectedly, and having a generator can help keep your home or business safe and functional. When considering a generator, it’s important to understand the two main types available: portable generators and permanent standby systems. Each serves a different purpose and comes with its own advantages, installation requirements, and safety considerations.
 

The Two Main Classes of Generators
 

Portable Generators

Portable generators are exactly what their name implies—mobile power sources that can be moved wherever they’re needed. These units are commonly used for temporary or limited power needs during outages.

Key features of portable generators include:

• Easy to transport and reposition
• Available in a range of sizes and electrical configurations
• Typically include standard 120-volt outlets; larger models may also have 240-volt outlets
• Gas-powered and started manually, usually with a pull cord
• Widely available at hardware and big-box stores
• Generally affordable, depending on your electrical needs

Portable generators are a popular choice for powering a few essential appliances or tools during short-term outages.

Permanent Standby Generators

Permanent standby generators are larger, stationary systems designed to provide more comprehensive backup power. Because of their size and complexity, they are not portable.

Key features of standby generators include:

• Capable of powering a large portion of a home or business
• Fueled by natural gas or liquid propane (LP)
• Automatically detect power loss and switch on within seconds
• Shut off automatically once utility power is restored
• Available in various sizes to match residential or commercial needs
• Typically more expensive due to equipment and installation requirements

Standby systems offer convenience and peace of mind, especially for those who rely on consistent power for medical equipment, businesses, or larger households.
 

Installation and Safety Considerations

Installing a Permanent Standby Generator

Only a qualified electrical contractor should install a permanent standby generator. Improper wiring can create dangerous back-feed conditions, which can put utility workers and your property at risk.

After installation, Minnesota law requires the system to be inspected by a state electrical inspector. This inspection ensures the generator is installed correctly and operating safely. Following these steps helps protect your home, your family, and electric utility crews.

Using a Portable Generator Safely

Portable generators do not require installation, but safety precautions are essential.

• Always operate portable generators outdoors. These units produce carbon monoxide, a colorless, odorless gas that can be deadly if used indoors or in enclosed spaces.
• Know your generator’s wattage capacity. Before plugging in appliances, confirm how many watts the generator can safely supply.
• Match appliances to available outlets. Generators with more outlet options typically provide higher wattage, but overloading can damage equipment and create safety hazards.

Taking a few extra minutes to understand your generator’s limits can prevent serious risks during an outage.
 

Need Help Deciding?

If you have questions about generator options, sizing, or safe use, contact one of Wright-Hennepin’s Energy Use Consultants at (763) 477-3000. They can help you evaluate your needs and make informed decisions before the next outage occurs.