Electrical FAQs: Answers from Experienced Maine Electricians

Electrical projects often come with questions. Whether you're planning an electrical upgrade, managing a commercial property, renovating an existing space, or addressing an electrical concern, understanding your options can help you make informed decisions.


At T.A. Napolitano Electrical Contractors, we've been providing electrical services throughout Greater Portland and Southern Maine since 1985. Our team works with homeowners, businesses, contractors, and property managers to deliver dependable electrical solutions.


Explore our frequently asked questions below to learn more about electrical systems, commercial services, project planning, and maintaining safe, reliable power.

Electrical panel with rows of circuit breakers and wiring inside a metal enclosure

Frequently Asked Questions About Electrical Services

  • Can an electrician repair parking lot lights that are not working?

    Yes. T.A. Napolitano provides parking lot lighting troubleshooting and repairs for a variety of lighting systems, including HID and fluorescent fixtures. Our electricians can also install LED fixtures and help property owners explore retrofitting existing parking lot lighting.

  • Can you replace older parking lot lights with LED fixtures?

    Yes. T.A. Napolitano installs LED parking lot lighting and offers complete retrofit options for existing lighting systems. LED fixtures can provide improved energy efficiency and longer service life compared with many older lighting technologies. The appropriate retrofit depends on the existing fixtures and the property's lighting requirements.

  • What types of commercial properties does T.A. Napolitano service?

    T.A. Napolitano works with a wide range of commercial and institutional properties, including retail stores, office complexes, manufacturing facilities, warehouses, schools, medical institutions, financial organizations, and municipal facilities. Our electrical services are available for a variety of property types throughout Greater Portland and Southern Maine.

  • Can you work on electrical systems in older or historic buildings?

    Yes. T.A. Napolitano lists historical buildings and renovations among the properties and projects it serves. Electrical work in older buildings may involve evaluating existing wiring, accommodating renovation plans, and addressing electrical requirements specific to the property. The scope of work depends on the building's existing electrical system and the planned improvements.

  • Does T.A. Napolitano provide electrical work for multi-unit housing?

    Yes. T.A. Napolitano provides electrical services for new-home and multi-dwelling construction. Electrical work for multi-unit properties may include wiring, lighting, electrical distribution, and other installations needed for the project. Specific requirements depend on the building design and construction plans.

  • Does T.A. Napolitano install heat pumps?

    Yes. T.A. Napolitano offers heat pump installation services through its licensed electricians in Greater Portland and Southern Maine. Heat pumps provide heating and cooling by transferring heat rather than generating it through combustion or electric resistance. Installation requirements vary depending on the equipment and property.

  • What electrical services are available for warehouse and manufacturing facilities?

    T.A. Napolitano provides electrical services for warehouse and manufacturing facilities, including machinery wiring, power distribution, motor controls, three-phase power systems, equipment relocation, electrical troubleshooting, and facility upgrades. These services support the electrical requirements of industrial and commercial operations.

  • Can you install or repair exterior lighting for a business?

    Yes. T.A. Napolitano provides commercial exterior and parking lot lighting services, including troubleshooting, repairs, and installation of LED fixtures. Proper exterior lighting helps businesses illuminate parking areas and outdoor spaces. The electrical work required depends on the existing lighting system and the property's needs.

  • What is an LED lighting retrofit?

    An LED lighting retrofit involves replacing older lighting technology with LED fixtures or components. For commercial properties, retrofits may include parking lot lighting, warehouse lighting, and other exterior or interior lighting systems. T.A. Napolitano offers LED retrofits and complete parking lot lighting retrofit options.

  • What is the difference between residential, commercial, and industrial electrical work?

    Residential electrical work focuses on homes and their electrical systems, including wiring, lighting, outlets, panels, and other household electrical needs.


    Commercial electrical work supports businesses and facilities such as offices, retail stores, restaurants, and other commercial properties. It may include lighting, electrical distribution, service upgrades, and equipment installations.


    Industrial electrical work often involves machinery, equipment wiring, motor controls, three-phase power, and electrical systems used in manufacturing or other industrial operations.


    T.A. Napolitano provides residential, commercial, and industrial electrical services throughout Greater Portland and Southern Maine.

Have More Questions About Your Electrical Project?

Every property has different electrical needs. Whether you're planning a commercial renovation, upgrading electrical infrastructure, or looking for an experienced contractor for an upcoming project, T.A. Napolitano is here to help.


With more than 40 years of experience serving Greater Portland and Southern Maine, our team brings knowledge, professionalism, and attention to detail to every project.


Contact T.A. Napolitano Electrical Contractors to discuss your project or request an estimate.