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Avatar for LT Generators
LT Generators
4.3(
82
)

Serving Oak View, CA and surrounding areas

Approved

In business since 1995

Free estimates

Warranties offered

"I recently had a whole-house generator installed by Nick and his crew. I must say it was a pleasure dealing with this company, from the office staff to the installers. Everyone was so accommodating and mindful of my concerns and requests. The parts and tools they brought took up half of my back yard but at completion of the job, which took a full day, everything was removed and all my planters and other things were put back as before. A very seamless operation indeed. I would not hesitate to recommend LT generators."
22kw Generac Natural Gas Generator
27kw Generac Natural Gas Generator
Kohler Liquid Cooled
27kw Generac Natural Gas Generator
Kohler Air Cooled 20kW

+12

Response time2 days
36 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Garafano Electric, Inc.
Garafano Electric, Inc.
4.8(
188
)

Serving Oak View, CA and surrounding areas

Approved

In business since 1968

Free estimates

Warranties offered

"Garafano Electric is very professional and courteous. They arrive on time, complete the task at hand in the time they estimated and clean-up upon departure. They are also helpful in making suggestions when installing new lighting. We added new lighting in a dark living room, replaced old kitchen "can" lighting to new LED lights as well as replaced outdoor security/sensor lighting and added one more extra bright security/sensor light in a dark area of the front yard."
Response time3 days
6 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Casaroja Electric Inc
Casaroja Electric Inc
5.0(
18
)

Serving Oak View, CA and surrounding areas

Approved

Emergency services offered

Warranties offered

Offers commercial services

"Sergio did a fantastic job! Very happy with the clean install of my tier 2 charger and he added a plug down below my panel. Would recommend for any sort of EV charging installs! Clear communicator, showed up when he said he would and his services were well-priced!"
Panel upgrade
Panel upgrade
Panel upgrade
Panel upgrade
Panel upgrade

+1

5 neighbors recently requested a quote
Avatar for M.Y. Electrical Contractor
M.Y. Electrical Contractor
4.6(
256
)

Serving Oak View, CA and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"Impressed with Luis & team. First installed new outlets for a TV, moved an outlet, installed outdoor lights, then upgraded my electric panel. Each time great work, very reliable, and I know it’s fairly priced."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+29

Response time1 day
7 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Powersmart Electric, Inc.
Powersmart Electric, Inc.
4.5(
32
)

Serving Oak View, CA and surrounding areas

Approved

In business since 2005

Free estimates

Credit card accepted

"Hired PowerSmart to do electrical repair and lighting install in our home. They were prompt, professional, reasonably priced, and overall excellent. I would definitely hire again and I recommend them to anyone. Brent and James are fantastic."
Standby generator
Solar Array installation
New 200 amp electrical panel
Response time2 days
Recommended by93%of homeowners
Avatar for Infinity Electric
Infinity Electric
5.0(
6
)

Serving Oak View, CA and surrounding areas

Approved

In business since 2015

Free estimates

Small jobs welcome

"Service call for outlet was immediately handled by Mike. He recommended the panel to be replaced so he returned the following week and took care of the replacing my panel too. He was professional and personable."
Electrical Panel Install
Electrical Panel Install
EV CHARGER INSTALL
EV Charger Installations
Meet The Team!

+4

38 neighbors recently requested a quote
Avatar for Genesis Electricians
Genesis Electricians
5.0(
1
)

Serving Oak View, CA and surrounding areas

Approved

In business since 1993

Free estimates

Warranties offered

We are a locally owned and operated company that values honesty, integrity, and treats your home as if it were our own. We have been in business since 1993, offering complete outdoor makeovers. Genesis Electricians can service your electrical needs including panel and subpanel upgrades, circuit breakers, fuses, complete house rewiring, electric vehicle charging units, Tesla Powerwall III home battery back-ups, Smart home circuits, low voltage lighting systems, and even Generac Home Generators. Being a division of Genesis Stoneworks, we also provide a variety of specialties such as the new installation of pavers, concrete, artificial turf, new pools, and spas. Additionally, we will also install garden and fence walls, plumbing, irrigation, stone veneer, wood decking, composite decking, outdoor kitchens, fire pits, BBQ islands, and outdoor fireplaces. We are competitively priced. Our skilled craftsmen pay close attention to the details of each and every project that we are involved with. With 8 contractor license classifications, we are the most qualified contractors you will ever work with. We look forward to building lasting relationships and guarantee your satisfaction!\nCall or 'click' for a FREE estimate today!

Complete yard remodel including a new pool, patio cover, fire pit area, pavers artificial turf, and outdoor kitchen.
Pool and deck remodel including retaining walls, pool coping, tile, plaster, and water features with lights
Patio paver, artificial turf, and garden wall installation project overlooking Agoura Hills
Construction of a new pool, outdoor kitchen, and seating walls in the early stages.
Pool deck pavers, retaining walls, and elevated patio pavers

+59

Response time1 day
10 neighbors recently requested a quote
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Showing 1-10 of 268
Generator Install questions, answered by experts

Sizing a generator is a careful process that requires calculating the electrical load of your entire house. You have to take into account every device you want to use and their wattage requirements, plus the wattage needed to start them, and look for a generator that can safely run all that at around 80% capacity.

In more practical terms, a small home can run on a 10,000-watt generator (and if you only want to power a few key appliances, much less than that). A mid-sized home may need something between 15,000 and 22,000 watts. Larger homes require 25,000 watts or more. 

Whole-house generators can run continuously for extended periods, even for weeks at a time (around 400 to 500 hours), as long as they have a sufficient fuel supply. However, this type of extensive use will increase wear and tear and can shorten the generator's overall lifespan. During long periods of operation, it's important to check and refill the engine oil as needed, potentially as frequently as daily depending on the model. If your generator uses a fuel tank, ensure it is kept full to prevent unexpected shutdowns.

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

DIY is possible for basic setups. Professional installation ensures safe and proper electrical connections.

If you have a transfer switch properly installed, the generator and main electrical power cannot feed the system at the same time. However, you should still shut off the power at your main circuit breaker panel before activating the generator. If you do that, you’ll simply need to shut off the generator and reset your circuit breaker once the local power comes back on.

The Oak View, CA homeowners’ guide to generator installs

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