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Henderson Electric, LLC
5.0(
6
)
Portable Generator - RepairFixed Generator - InstallFixed Generator - Repair+3 more

Serving Ketchum, ID and surrounding areas

Approved

In business since 2020

Credit card accepted

Offers commercial services

"We had Henderson Electric hook up the electrical for our new hot tub. They installed the proper breakers, ran conduit/wiring through the attic, to the outside wall, underground to a post, then mounted a switch panel and completed wiring to the hot tub. Can't say enough good things about our experience. Excellent quality of work overall. Very clean and complete professional work. Also very good communication and follow up, which, unfortunately, is not all that common these days. Classic example of doing it right or don't do it, which we really appreciated. We also appreciated the knowledge and expertise as we knew what we wanted done, but not necessarily the best way to accomplish what we needed. They helped us explore and weigh out several options for different ways to do the job, and explained pros and cons of each option. Gave us an estimate the next day and got us on the schedule right away. We had contacted other contractors/electricians and got a few other estimates, some more expensive, some less, but none of them gave us the level of personal service and professionalism like Henderson's. Would absolutely recommend Henderson's to anyone looking to get any home electrical work done."
Response time9 hrs
Response rate87%
5 neighbors recently requested a quote
Avatar for 1776 Electric
1776 Electric
3.0(
1
)
Fixed Generator - Install

Serving Ketchum, ID and surrounding areas

In business since 2021

Free estimates

Credit card accepted

"Near impossible to get ahold of them, I understand being business, but then there is blatant ignoring. Even after planning another job. I cant access my Internet cable as its now stuck under a outside wire tube. Needing to call my Internet provider to get it moved."
Response time1 day
Recommended by100%of homeowners
Generator Install questions, answered by experts

As a safety measure, you should always turn off the main breaker while operating your generator’s backup breaker. In addition, you should also switch off all appliance breakers so you don't have a power surge when the main breaker turns back on. And finally, turning off the main breaker prevents back-feeding, which endangers utility workers with the risk of electrocution. Back-feeding could also destroy the electrical circuits of your neighbors if they use the same power network.

To power a central air system during a power outage, the whole-house generator will need to be at least 5,000 watts, and this number will significantly increase for larger units. Check the specific wattage requirements of your AC unit to choose the right generator size. Consider consulting a generator installer to ensure your whole-house generator meets your electrical load needs.

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. 

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.

Homeowners can often access federal tax credits, such as the Investment Tax Credit (ITC), which covers a percentage of installation costs. Many states and utilities offer additional rebates, grants, or performance-based incentives. These programs can significantly lower your upfront investment. Check the Database of State Incentives for Renewables and Efficiency (DSIRE) or contact your local energy office for current offers.

The Ketchum, ID homeowners’ guide to generator installs

From average costs to expert advice, get all the answers you need to get your job done.