Back Up Generator Installation
We understand the importance of choosing the right backup generator size for homeowners and are dedicated to ensuring the safety and efficiency of your home’s electrical system. With our expert guidance, you can rest easy knowing that you’ve made the right choice. Trust Dollens Electric to install the ideal backup generator for your needs.
Call Dollens Electric (408)929-6100

Excellent communication and professional!
Highly recommend!
Jason seemed to know the possible cause for the problem when I told him that the parts of the house were losing power gradually, and he was right!! He came out on the same day and fixed the problem (burnt crimp in junction box in the garage) within an hour!! Excellent!
They give an accurate read on what needs
to be done. They are a safety-first company
that shows up energetic & work...
They answered all our questions, let us know and talk through our options and didn't do any additional work without letting us know and approve the price difference for our requests, rather than telling us at the end of the job.
A+ work!
Update - Jason and Josh again came through for me. In the midst of a heat wave, they were able to come to the other end of the county and fix an electrical problem at my mother's house. Got the outlets for the portable AC and lift chair back working and made the wiring safer to boot.
Original - Could not ask for better. Jason installed a new 40 amp circuit and an EVo charger for our car. (No more slow 110 charging. Yeah!) While working in our breaker panel he noted a dangerous situation left by a previous contractor who upgraded our air conditioning.
(Side note kind of disappointing the inspector didn't notice that the other contractor put in a bigger breaker on a wire that was too small. Luckily the wire insulation had just started to bubble and it didn't catch fire.)
Within a week they were able to fit us in to replace the faulty circuit as well as rewire our garage lighting to eliminate some creative but scary runs of extension cords and re-purposed outlets. Now I have bright lights and when I look up, I don't see wires draped everywhere.
We connected with Jason of Dollens Electric through our equally excellent general contractor Dan Mackey. (Who by the way had nothing to do with the faulty circuit or the creative garage lighting.)
Lastly a thank you to Jason's son Josh who got to do the crawling under the house.


Understanding Backup Generator Basics
There are two main types of backup generators: portable and standby.
Portable generators are smaller and more affordable but require manual operation and refueling.
Standby generators, also known as whole home generators, are larger and more powerful. They automatically kick in when the power goes out, providing a seamless power supply. A backup generator is a standalone device that provides power when your regular power source fails.
Generators come in different sizes and types. The size refers to the power output, measured in watts. Choosing the right backup generator size is essential, as it ensures that the generator can handle your home’s power needs during an outage.
However, choosing the right size is more complex than it sounds and requires a clear understanding of your home’s power requirements.
How to Calculate Your Power Needs:
To calculate your home’s power needs, list all the appliances and electronics you want to power during an outage. It is important to focus on the essentials that ensure comfort and safety rather than trying to power everything. Next, find out the wattage of each item, which is usually listed on the appliance or in the user manual. Then, add up the total wattage to estimate the minimum power output your generator should have.
Listing Essential Appliances and Electronics
1. Essential Appliances:
– Refrigerator
– Heating system
– Lights
2. Essential Electronics:
– Computer
– Television
– Phone chargers
3. Medical Equipment (if applicable):
– Oxygen concentrators
– Home dialysis machines
4. Additional Comfort Items:
– Coffee maker
– Extra power outlets for miscellaneous use
Understanding Starting vs. Running Watts
Every appliance has two wattage ratings: starting watts and running watts. Understanding the difference is crucial when choosing a generator.
Starting or surge watts are the extra power needed to start motor-driven products, such as refrigerators or air conditioners.
Running or rated watts are the continuous power needed to keep the appliance running. They are usually lower than the starting watts.
When calculating your power needs, consider both starting and running watts. Your system should be able to handle your appliances’ highest total starting watts.
Size Does Matter
When selecting a backup generator size, choosing the right one is crucial. One that is too small may not be able to power all of your essential appliances. On the other hand, one that is too large can lead to unnecessary fuel consumption and may damage the generator. Therefore, it’s important to understand your home’s power needs in order to select the appropriate size.
It's not just about power needs.
There are a few key things to consider to ensure you make the best choice.
First off, think about the type of fuel the generator uses. Whether it’s natural gas, propane, or diesel, each has its own advantages and drawbacks. This can impact the size you’ll need.
Location is also important. Your generator should be placed in an easily accessible spot for maintenance and should be protected from potential hazards like flooding.
Fuel Type and Noise Level
Noise is another crucial factor to think about. Generators can be noisy, so it’s important to consider your neighbors and local noise regulations. Keep in mind that the type of fuel can also impact noise levels, with natural gas and propane generators generally being quieter than diesel ones.
Lastly, don’t forget that the location can affect its noise level. Placing it too close to your home might make the noise more noticeable, while putting it too far away can make maintenance and fuel delivery a hassle.
Considering a sound-attenuating enclosure might be a good idea to reduce noise, but be sure to keep ventilation in mind to prevent overheating.
Stand By Generator
Local Codes and Environmental Considerations
Environmental considerations are also important. Diesel generators, for example, emit more greenhouse gases than natural gas or propane generators.
Finally, consider the impact of your generator on local wildlife. Loud noises can disturb animals, and exhaust fumes can harm plants and insects. Choose one that minimizes these impacts as much as possible.
Importance of Professional Generator Installers
At Dollens Electric, we are an established electrical contractor based in San Jose. Our team comprises skilled professionals who are ready to assist you with your generator installation needs. We provide honest guidance and top-notch workmanship to ensure safe and efficient operation.
Our expertise allows us to help you choose the right backup generator size and ensure compliance with local codes and regulations. Additionally, we offer valuable advice on placement, considering accessibility, safety, and noise concerns. You can rely on us to guide you through installation, ensuring your generator is installed correctly and safely.
Solar Power Anywhere
Solar-To-Go
Portable Solar Solutions Found at Dollens Electric

Solar-To-Go provides affordable portable solar power solutions with flexible rental options. Rent a portable solar generator for $99/month with eight modules, ideal for home renters and those seeking sustainable power on the go.
Generator Installation Process
When installing a backup generator, it’s important to ensure that it complements your home’s architectural style. You can preserve your home’s aesthetic appeal while also guaranteeing its practicality.
Take into account the visual impact of the generator placement. Choosing a location where the generator is inconspicuous is essential.
Prioritize safety and adherence to regulations. The generator should be installed in a way that meets all local building codes and regulations.
Tips for Generator Placement
The installation process begins with a site assessment. This helps determine the best location for your generator. Next, is installation and connection to your home’s electrical system. A transfer switch is also installed to switch between utility and generator power safely.
The placement of your generator can impact your home’s curb appeal. Choose a discreet yet accessible location.
Ensuring Safety and Compliance
Safety should be a top priority when installing a backup generator. To prevent overheating, it should be placed in a well-ventilated area.
Compliance with local codes and regulations is also crucial. This ensures your generator installation is legal and safe.
Maintenance and Longevity of Your Backup Generator
A backup generator is a long-term investment. Proper maintenance ensures its longevity and reliability.
Regular maintenance can prevent unexpected breakdowns. It also ensures your back up power operates efficiently when needed.
Understanding the fuel consumption rates is also important. This helps in planning for fuel storage and safety.
Lastly, consider the noise level ratings. This ensures compliance with local noise regulations.
Regular Maintenance Schedule
It’s important to remember to keep up with regular maintenance for your generator. This includes checking the oil, filters, and battery consistently. Doing so can ensure that your generator is in optimal working condition, which is crucial, especially during times of need.
In addition to these regular checks, it’s also worth considering professional maintenance from Dollens Electric. They offer generator maintenance plans that provide comprehensive service to ensure all components are in top condition. This proactive approach can help prevent potential issues and extend the lifespan of your generator, providing you with peace of mind and reliable backup power when you need it most.
Dollens Electric at
(408)929-6100
We accept most major forms of credit cards, including Visa and MasterCard.
3-year parts warranty and a lifetime warranty on craftsmanship.
3240 S. White Rd. #145
San Jose, CA 95148