Electrical Outlet Installation & Replacement on O’ahu
Stop relying on dangerous extension cords. Upgrade your home with safe, modern, and convenient power access.
Knoles Electric
Power Where You Need It, Safely
Outlets (receptacles) are the most used electrical components in your home, yet they are often the most neglected.
If your plugs fall out of the wall loosely, if you see sparks when you plug in a vacuum, or if you are still using “two-prong” ungrounded outlets from the 1950s, your home is at risk. Loose connections create heat, and heat creates fires.
At Knoles Electric, we don’t just swap parts. We upgrade your home’s safety and convenience. From installing GFCI protection in kitchens and bathrooms to adding USB-equipped outlets by your bedside, we ensure every connection is tight, grounded, and code-compliant.
Our Outlet Services
We provide comprehensive installation and repair services for homes and businesses:
Standard & USB Outlets:
Upgrade standard duplex receptacles to modern units with built-in USB-A and USB-C charging ports.
GFCI & AFCI Safety Outlets:
Installation of Ground Fault (shock protection) and Arc Fault (fire protection) interrupters, required by code in wet areas like kitchens, baths, garages, and lanais.
240V Appliance Circuits:
Heavy-duty outlets for dryers, electric ranges, welders, or window AC units.
Outdoor Weatherproof Outlets:
Rugged, sealed outlets with “in-use” bubble covers designed to withstand Hawaii’s rain and salt spray.
Ungrounded (2-Prong) Upgrades:
Safely converting old 2-prong outlets to modern 3-prong grounded outlets for computer and appliance safety.
Quick Diagnostic Guide: Is Your Outlet Dangerous?
Outlets wear out over time. Use this guide to check if yours need replacement.
| Symptom | What It Means | Urgency Level |
|---|---|---|
| Plugs Fall Out | Internal contacts are worn out. High risk of arcing/heat. | 🔴 REPLACE NOW |
| Warm Faceplate | Wire connection is loose or circuit is overloaded. | 🔴 EMERGENCY |
| Black/Brown Marks | Evidence of small electrical fires (arcing) already happening. | 🔴 EMERGENCY |
| 2-Prong Only | No ground wire. Surge protectors won't work; shock risk. | 🟠 HIGH |
| Crackling Sound | Electricity is jumping gaps inside the device. | 🔴 EMERGENCY |
| Trips Immediately | Device failure or dangerous ground fault detected. | 🟡 MODERATE |
⚠️ Seeing scorch marks or loose plugs? Click here to schedule a safety swap.
Renovating Your Kitchen?
You likely need updated GFCI outlets to pass inspection. We handle the code compliance for you.
Call Us 24/7 (808) 600-8816
Email Us info@knoleselectric.com
Our Installation Process
We believe in doing it right the first time. While many handymen use “speed wiring” techniques that fail after a few years, we use professional methods for longevity.
1. Circuit Safety Check & Mapping:
Before we touch a screw, we test the circuit to ensure it is de-energized and safe. We also check the upstream wiring to see if other outlets are affected, ensuring we don’t accidentally disconnect your downstream devices.
2. Box & Wire Inspection:
We pull out the old device and inspect the condition of the wires inside the wall. In Hawaii, we often find brittle insulation or corrosion. If the wires are damaged, we trim them back to clean copper to ensure a solid electrical connection.
3. Professional "Side-Wired" Installation:
We never use the “back-stab” holes (spring-loaded clips) found on the back of cheap outlets, as these loosen over time. We mechanically wrap the wire around the heavy-duty side screws and torque them down. This creates a permanent, vibration-proof connection that won’t fail.
4. Polarity & Ground Testing:
After installation, we use a digital circuit analyzer to verify proper polarity (hot/neutral placement), ground continuity, and voltage drop, ensuring your expensive electronics are safe to plug in.
Why Choose Knoles Electric?
We are a local, family-owned company built on trust, quality craftsmanship, and the “Spark Aloha” spirit.
No "Back-Stabbing" Shortcuts:
As mentioned above, we refuse to use shortcuts. “Back-stabbing” wires is the #1 cause of outlet failure we see in homes. We take the extra time to create secure screw-terminal connections because your safety is more important than our speed.
Clean, Careful & Respectful:
Changing outlets can create drywall dust and debris. We use drop cloths and vacuum every workspace before we leave. We treat your home with respect—ohana style.
Code Compliance Experts:
Electrical codes change frequently (especially regarding Tamper Resistant and AFCI outlets). Our union-trained team stays up to date on the latest NEC requirements, ensuring your home passes inspection if you ever decide to sell.
Why Hire a : Pro vs. DIY?
Replacing an outlet seems simple, but small mistakes can be deadly.
| Feature | DIY / Handyman | Knoles Electric (Pro) |
|---|---|---|
| Wiring Method | "Back-stabbing" (push-in) wires. Loosens over time. | Side-Screw Torque. Permanent, tight connection. |
| GFCI Safety | Often mixes up "Line" vs. "Load", disabling safety features. | Correctly Wired to protect all downstream outlets. |
| Grounding | May install 3-prong outlet without a ground wire (False sense of safety). | Proper Grounding or GFCI-protected bootleg fix. |
| Outdoor | Uses wrong cover; water gets in. | "Extra-Duty" Weatherproof covers installed. |
Elijah completed the installation with great care and quality. He also maintained clear communication throughout the two day project.
Overall, a smooth experience and we’re happy with the results. Mahalo Knoles Electric Team!
Elijah was the electrician who came out for the rescheduled appointment and he was truly amazing! Arrived exactly on time & was prepared with all of the necessary tools & parts! He was thorough, efficient and fun to chat with throughout the job! He also made sure to vacuum up afterwards despite renovation mess, but this just proves the attention to detail he provided! Can't recommend him, or this company enough!! Mahalo, Elijah!!
Parties. Cameron was very concerned for me and my family and our situation. He asked me to explain what happened. He told me not to panic and thought that he knew the problem and that he might be able to help me over the phone. He told me what to do step by step while he stood by on the phone. Miraculously I was able to get the power back on and complete our New Year’s family dinner. We owe a ton of gratitude to Cameron for being there for us in a time of crisis… a “God Send”! He definitely deserves more than Five Stars! Will recommend Cameron and Knowles Electric.
I sent him a pic of my damaged
electric box and he solved the problem without coming out.
I have found an electrician for the future. I highly recommend him.
Knoles Electric, Cameron, came in and rewired our entire house. He had to climb in the attic as well as crawl under our house to get the job done. Since our recent renovation was over 35years ago, he suggested updating our lighting. He installed a bunch of Halo 4” canless LED recessed lights in our living room, kitchen and bathroom. These lights provide great lighting while remaining almost hidden. We got rid of our ceiling fans and had him install simple 15” lights.
Overall…Cameron did a great job. I would definitely recommend him.
If you live in an older house, I would recommend someone to inspect your electrical system. It’s better to be safe than sorry…
Let me know. I know a guy..
Great communication and speedy service!!
I highly recommend Knole’s electrical and guarantee you won’t be disappointed.
Mahalo’s Cameron
He assesses electrical issues with precision and always provides the best recommendations prioritizing safety. His transparency in explaining what needs to be done instills confidence, and he ensures all necessary equipment is promptly acquired and used for immediate fixes.
Cameron initially helped fix electrical setups in my home that were not up to safety standards, demonstrating his commitment to ensuring a secure environment. His expertise and reliability have earned my trust, making him my go-to electrician for any residential needs.
Cameron provides services for commercial spaces, and I am equally impressed with his professionalism and efficiency in this realm. I highly recommend Cameron for anyone seeking a trusted, dependable and skilled electrician.
Highly recommend!! Thanks again!!
Frequently Asked Questions About Panels
1. How much does it cost to replace an outlet?
The cost is very affordable, especially when doing multiple outlets at once. The price depends on the type of outlet (Standard vs. GFCI vs. USB) and the condition of the wiring. Contact us for a straightforward quote.
2. Can I change a 2-prong outlet to a 3-prong outlet?
Yes, but it must be done correctly. You cannot just screw in a 3-prong faceplate if there is no ground wire in the wall. We can either run a new ground wire (best) or install a GFCI outlet which allows for 3-prong usage safely and legally by code.
3. What is a GFCI and why do I need it?
GFCI (Ground Fault Circuit Interrupter) is a safety device that cuts power in milliseconds if it detects water or a shock hazard. They are mandatory in kitchens, bathrooms, garages, laundry rooms, and outdoors.
4. Why does my GFCI keep tripping?
If it trips, it is doing its job! It means there is moisture in the line or a faulty appliance plugged in. If it won’t reset even with nothing plugged in, the outlet itself has likely failed (common in humid Hawaii weather) and needs replacement.
5. Can you install an outlet behind my wall-mounted TV?
Yes. We can install a recessed “clock outlet” or a new box behind your TV so you can hide the power cords completely for a clean, floating look.
6. Do you install 240V outlets for EVs?
Yes. We install NEMA 14-50 outlets (and hardwired stations) for electric vehicle charging. See our [EV Charging Page] for more details.
7. What are "Tamper Resistant" (TR) outlets?
TR outlets have internal shutters that prevent objects (like keys or paperclips) from being inserted into the slots. They are now required by code in all homes to protect children from shock.
8. Can I add an outlet where there isn't one?
Yes. We can “fish” wire from a nearby circuit to add a new receptacle in a more convenient location, provided the circuit can handle the extra load.
9. My outdoor outlet cover is broken. Is that bad?
Yes. If water gets into the outlet, it can corrode the contacts and cause a short circuit. We replace broken covers with heavy-duty, “in-use” rated covers that seal tight even when a cord is plugged in.
10. How long do outlets last?
Standard builder-grade outlets usually last 10–15 years. If your home was built in the 90s or early 2000s and the outlets feel “loose,” they are past their service life and should be replaced.
Areas We Serve
Kalihi-Palama | Makiki-Tantalus | Ala Moana-Kakaako | McCully-Moiliili | Liliha/Alewa | Diamond Head-Kapahulu | Waikiki | Manoa | Kaimuki | Nuuanu-Punchbowl | Downtown-Chinatown | Kahala | Hawaii Kai | Honolulu | Pearl City | Waipahu | Kailua | Kāneʻohe | Mililani Town | ʻEwa Gentry | Kapolei | Mililani Mauka | Makakilo | Wahiawā | ʻEwa Beach | Halawa (Near Pearl Harbor/Aiea) | Royal Kunia | Waimalu (Near Aiea/Pearl City) | Waiʻanae | Nānākuli | Waipiʻo (Near Waipahu) | Māʻili | ʻAiea | Mākaha | Waimanalo | Lāʻie | Pūpūkea | Haleiwa | Waialua | Hauʻula | Kahuku | Ko Olina
Need More Power?
Contact Knoles Electric today to upgrade your home’s outlets.