Knob and Tube House Wiring

old knob and tube house wiringDo You Have Knob and Tube House Wiring?

Knob and tube house wiring was an early standardized method of electrical wiring in building, in common use in the United States from 1880 thru the 1930’s. It consists of single insulated copper conductors run within wall or ceiling cavities, passing through joist and stud drill-holes via protective porcelain insulted tubes, and supported along their length on nailed-down porcelain knob insulators. Where conductors entered a wiring device such as a lamp or switch, or were pulled into a wall, they were protected by flexible cloth insulating sleeving called “loom”. The first insulation was asphalt-saturated cotton cloth, then rubber became common. Wire splices in such installation were twisted for good mechanical strength, then soldered and wrapped with rubber insulation tape and friction tape (asphalt saturated clothe), or made inside metal junction boxes.

Many houses constructed pre 1950’s have what is called knob and tube wiring. One can determine if you have this type of wiring in your home, by closely look into at basement joists or attic rafters. To determine if your home is wired ” knob and tube” look for ceramic knobs or tubes in which the wire gets attached to , or passes through joist or studs. If the knob and tube wiring is not easily visible, you can usually tell by look into at your electrical outlets and switches. We have a photo posted here for you to look at that will give you an idea.

We thank CityScoop.US and Zalman Sher for reminding us about this wonderful subject on Knob and Tube House Wiring. If you would like to learn more about Knob and Tube House Wiring please visit City California – electrical topics.

If you have any of these types of old house wiring, you need to contact Ethical Electrical for updated your house wiring.

Contact Ethical Electrical, Dominic Portesi he serves all communities of Upland, Ontairo, Claremont, Glendora, San Dimas, Alta Loma, Rancho Cucamonga, Covina, and Montclair California.

Electrician Montclair CA

CALL 909-581-5800

Electrician Upland CA

Electrician Dominic Portesi Upland CAElectrician of Upland CA

Welcome to the Ethical Electrical Blog! So glad you decided to spend some time here learning about our services. We serve the entire San Gabriel Valley Area and also the Inland Empire Area. A few of the cities included are Upland, Claremont Glendora, Rialto, Rancho Cucamonga, San Dimas, Montclair, Covina, Ontairo, Alta Loma and many more.

My name is Aaron Dominic Portesi and I have been in the electrical trade for over 25 years. Please read my about page to learn more about my personal travels to other countries doing electrical jobs and humanitarian projects.

If you are looking for a honest, ethical electrician, you have come to the right spot. This blog is where I hope to give you more tips and educational information about the services I provide. Blogging is a hobby for me and well, frankly we can post more personal posts that we can at our other website called Ethical it is also informative but more static than this website. I hope you will return here from time to time and see our new postings and whats going on in the electrical industry.

Electrician Upland CA

Call me for a free custom quote or send me an email.

Phone: 909-581-5800

Call or Text

Electrical Outlets

electrical outlets upland caElectrical Outlets Installed or Repaired

Ethical Electrical of Upland is the go-to company to do repairs and new installation of electrical outlets.  Upland Electrical Contractor who knows that your safety of electrical outlets is a must.  If the electrical outlet is damaged, or the plugs just won’t stay plugged in, its time to call an expert. The constant movement of loose electrical outlets can loosen the wires connected to the outlet and create a dangerous arcing.  Or perhaps you have many outlets without any GFCI features.  You need an electrician to determine just how many GFCI receptacles you need.  There are many considerations. Hire a true professional like Dominic Portesi of Ethical Electrical.

Call or Text:  909-581-5800



Whole House Fan Installation

whole house fan upland caWhole House Fan Installation

Serving Upland, Ontario, Claremont, Glendora, San Dimas, Alta Loma, Rancho Cucamonga, Covina, and Montclair, California.

With temperatures reaching the 100’s it a great idea to have a whole house fan.  It helps you get the hot air out fast.

Ethical Electrical provides whole house fan installation. With the summer heat on the way, it may be the time to think about installing that long desired whole house fan.

The whole house fan is used to exhaust the building heat in the building’s attic. It is designed to circulate air in the home or building. Generally it can pull the air out of the building and force it into the attic space. Then forcing it out through the gables, or vents in the roof. It is important to leave windows open in the home or building to draw cooler air through open windows. Generally homeowners use this system later in the day when the temperatures are starting to cool down.

This system is rather tricky and does require a electrician to install the the whole house fan. In addition your attic needs to be checked out for circuit wiring, and if needed new attic vents. More vent area is better for optimal whole house fan performance.

There are additional operating precautions when using these large exhaust fans. Open windows throughout the house to prevent a powerful and concentrated suction in one location. When there is not enough ventilation, the fans can cause a back draft in your furnace, water heater or gas-fired dryer, pulling combustion products such as carbon monoxide into your living space. Therefore use a professional electrician who can make sure you have the proper whole house fan installation

Ethical Electrical serves the Upland, Montclair, Ontario, Clairmont, Covina, Glendora, San Dimas, Alta Loma and Rancho Cucamonga, CA.

Visit Upland Electrician or call: 909-581-5800

Remodeling Kitchen Lighting

remodeling kitchen lightingRemodeling Kitchen Lighting

If you are currently upgrading and remodeling your kitchen, you need to watch our video about recessed lighting. With the proper ceiling lights, you can make your room feel larger and brighter, consider doing recessed lighting. Maybe even add some great new hanging light fixtures like the ones in this photo. You can see how much the color of wood and light colored granite can really bring a warm feeling into the room.

The other item of great remodeling is the lights in the cabinets with glass to showcase your dishes, china and crystal. The cabinets really take a new life when you can see everything in them before you open the door.

All the new lights even light up the floor. Ethical Electrical can create a new warm kitchen for you too with all the new lights and fixtures to brighten up your cooking space.

If your home is an older home, we will make sure that your current lighting system is capable of handling all this new lighting energy you are going to add to the current electrical system. You may need new GIF’s or additional ones. We will also check out your electrical service panel for any need of replacing circuit breakers. Many times in older homes, the circuit breakers need to be replaced. We will be sure to test and inspect these circuit breakers for any problems.

Be sure to watch video in earlier post below, it really gives you an education about recessed lighting.

Call Dominic Portesi of Ethical Electrical for a custom quote.

Phone: 909-581-5800

Kitchen Recessed Lighting Ideas

Kitchen Recessed Lighting Ideas

Do you need some help with Kitchen Recessed Lighting Ideas? Dominic Portesi has presented a wonderful video on all the visual effects that good recess lighting can do for your kitchen. It’s also a great educational video.

Dominic is located in Upland California and also serves all the surrounding cities which include, Claremont, San Dimas, Glendora Electrician, Covina, Ontario, Alta Loma and Rancho Cucamonga.

Kitchen recess lighting can really brighten up an older kitchen. It is interesting how in this video, the wood grain cabinets and the granite counter tops look different after the improved lighting. Dominic also points out that he only uses the top quality products when installing your new recessed lights.

Ethical Electrical provides many additional lighting services. If you need recessed lights installed in other areas of your home or business, be sure to ask. Recessed lights in a dark hall way can really help you see your way. Or if you need recessed lights in a home library, home office or den, Dominic is the expert to give you advice on just what to install. Another favorite location to install recessed lights is the over hang area just in front of the garage doors. It gives a real nice warm touch on the garage doors.

For Kitchen Recessed Lighting Glendora CA

Be sure to visit the Ethical Electrical main website to learn more.

Here is a before and after photo of recessed lighting in the Kitchen.

remodeling kitchen recessed lighing

To learn more about the principles of good recessed lighting design be sure to watch the video above.


Electrician Ontario CA

Electrician Dominic Portesi Upland CAElectrician Ontario CA

Need an electrician in Ontario California? Ethical Electrical is the service that you can count on. We are a full service company providing home electrical repairs and commercial, industrial electrical work. If you need high voltage or low voltage electrical services, we are trained and experienced in all services which include fixing or replacing a switchgear, transformers, panels, conduit, switches and outlets to name a few.

If you are not sure what the electrical problem is, we are great at trouble shooting. Please don’t try to fix it yourself. Use an expert to complete electrical equipment problems. We are able to give service to any location in the Ontario California area. We invite you to visit our main website to take a look around and see all the many electrical repairs or new installs we are capable of completing for you or your business.

Electrician in Ontario, CA

CALL Dominic Portesi 909-581-5800

Office Recessed Lighting

Office Recessed LightingOffice Recessed Lighting Ideas

We are happy to give you some office lighting ideas to think about. As a avid reader of the Electrical Contractor Magazine, we found this very informative article we want to share with you. Who ever thought that lighting could be so educational. We thank Craig DiLouie for writing this very educational article. We are giving you just a taste and hope you enjoy it.

The Right Light: Color Tuning

By Craid DiLouie

While light makes sight, lighting shapes perception, particularly in regard to color in the things we see. This is because visible white light is made of colors. For us to see an object as a certain color, that color must be present in both the light and the object.

Electric lamps typically do not emit light in a balance color spectrum; the relative intensities of different colors, therefore, affect the appearance of a space. A white light source rich in red and orange wavelengths will bring out warmest colors and flesh tones. A white light source rich in blue and green wavelengths will bring out cooler colors. A light source with balanced red, green and blue wavelengths can make colors appear more vibrant.

The advent of light-emitting diode (LED) lighting has led to possibilities with color control that either did not exist previously or were difficult or costly to implement. Many LED luminaries are available with out-of-the-box dimming capability with a negligible cost adder. For the Lighting to have color tuning capability, either separately dimmable arrays of warm and cool LEDs are mixed, or separately dimmable colors are mixed with white. This makes it possible for color temperatures to either automatically change at various times of the day or in response to certain events, or users can manually adjust the color temperature based on evolving space needs or occupant preference. There also is an effort being made to connect the design of electric lighting systems with regulation of circadian rhythms. Advocates of this link believe changing color temperature in certain ways throughout the day can affect health and productivity.

There are many practical uses of this type of control in commercial buildings. Here are several possibilities that might be explored:

Open offices in which the prevailing color temperature matches the actual or idealized daylight cycle, providing a sense of connection with the outdoors and visual cues about time of day.  Day lighted offices in which the color appearance of the electric lighting is automatically tuned to blend with the daylight
Private offices where the occupant is given a remote control device to adjust both intensity and color temperature based on need or preference
Meeting spaces set to cool lighting during business and warm lighting during a special social event.
Retail store where the color appearance of the light is adjusted according to time of day, exterior environment, fashion season and changing pro-duct displays
Restaurant dining rooms set to cool lighting during business luncheons and warm lighting during evening dining hours. Automatically ensure constant color output from LED luminaries being dimmed or from those that color shift as they age.

In short, as with the ability to control white light’s intensity through dimming, the ability to control its shade makes lighting systems much more responsive to organizational and user needs, thereby increasing value.

If you wish to learn more about how to control lighting in the office and give comfort to your work place environment. Be sure to visit Electrical Contractor Magazine at

At Ethical Electrical we are your experienced and licensed Electrical Contractor in Claremont CA. We have years of experience in the electrical industry. If you have an office, restaurant, retail store, or any commercial business, we are able to take care of your lighting installations, or electrical installations and repairs. Dominic Portesi is our Head Electrician and is the expert in the Commercial and Industrial Industry. Please give him a call and ask any questions regarding electrical work on these types of business buildings.

For office recessed lighting installation or repairs, contact Ethical Electrical.

Visit Website: Ethical Electrical.Net Call: Dominic Portesi 909-581-5800

Grocery Store Electrical

Grocery Store ElectricalGrocery Store Electrical Systems

The owners and managers of such facilities need repairs and upgrades frequently. This is because a Grocery Store is the most electricity intensive type of commercial facility. By that we mean, practically everything in the store relies on electricity. The refrigeration of fresh food, produce, meats, frozen foods, lighting, room atmosphere cooling or heating can be so expensive. Thereby leaving a very small profit margin.

There are hundreds if not thousands of grocery stores who need updated equipment and systems to gain an edge on increasing cost of produce and products. It takes an experienced Electrical Contractor who has created complex electrical systems to help those companies do their upgrades.

Dominic Portesi is that man, he has years of electrical contracting experience he has installed systems for grocery stores, movie theaters restaurants, refineries , medical buildings, hotels and motels.

Some of these commercial electrical systems included load calculation, wire size calculations, duct fill calculations, conduit fill calculations, all wire requirements, purchasing of all materials required, figure device and motor termination, ordering of all materials and testing.

Then after getting it operational, how about setting up that back-up system installed to work with the current operation system. Without a backup generator system for a commercial system. You will most certainly lose lots of money when you have that electrical storm hit the area.

Recently in our home area, we had an electrical storm. The power was out for many many hours. But one store remained open. It was a comfort for those who need to buy emergency batteries, candles and ice for their home refrigerators That day I will always remember. Even though it was only overnight. I will not forget how the other stores had to close down. The store with the backup generator gained a profit and helped the neighborhood which was grateful.

If you need a commercial electrical contractor, contact Dominic Portesi.

CALL: 909-581-5800

Vist his main website: Ethical Electrical.Net

Commercial Electrical Systems

commercial - industrial electricianCommercial Electrical Systems

Dominic Portesi has provided commercial electrical systems for many large companies.

He has run crews of employees up to 26 personnel and electricians at a time to build commercial electrical systems. He has built systems from the ground floor up, completed the layouts, routing methods, material required, material purchasing, installation, production, scheduling, termination, quality control, testing and evaluation. Including training the personnel to complete the job, on time and on budget.

Dominic Portesi has passed all UL Inspection, CE Inspections, N.E.C. Inspection, NASA Inspection, Corporate, City and County Codes. There is very little that Dominic has not experienced about being an electrical contractor serving all areas of the Inland Empire.

This photo is a photo taken at the site that is a Class 1 Division 1 Shelter he built from the ground up. If you are a commercial business needing a large commercial electrical system, Dominic Portesi loves a challenge.

Ethical Electrial serves Upland, Ontairo, Claremont, Glendora, San Dimas, Alta Loma, Rancho Cucamonga, Covina and Montclair, CA.

VISIT: Ethical Electrical.NET

Call Ethical Electrical 909-581-5800