Inspection of “low voltage wiring systems and components" is excluded from a home inspection according to the Standards of Practice of Practice of both national home inspector associations, the International Association of Certified Home Inspectors (InterNACHI) and American Society of Home Inspectors (ASHI), along with the State of Florida and many other states.

    Low voltage means any voltage that is less than the regular 240/120 volt wiring to appliances and receptacles around the home. Doorbell, intercom, thermostat, alarm and sprinkler control wiring, and landscape lighting are examples of low voltage systems that have been around for awhile, but the use and complexity of low voltage wiring has exploded in the last 20 years with computer cabling.

    Because it is often attached to some type of control device that is programmed, testing a low voltage system means the inspector often must override the programming and, if it is not reset properly afterwards, a homeowner gets very angry. Also, the mutliple technologies are changing constantly.

    Even if the exlusion of low voltage wiring is not stated directly in the home inspector’s contract agreement, one of the Standards of Practice mentioned above will be referenced as part of the contract agreement.

   But any home inspector may decide go beyond the base standards and include certain low voltage systems in their report. Some venture into evaluating computer cabling, for example, and testing the sprinkler system via the control panel is often done in our area; but, otherwise, low voltage systems are not included in a home inspection. 

    A home inspector may also choose to limit the scope of the inspection to less than what is outlined in the standards—when agreed to by the homebuyer and specified in an inspection agreement. A four-point insurance inspection would be example of a limited inspection. 

    Click on any of the links below to read other articles about what is required to be included, or not, in a home inspection:

AFCI •• Air conditioner •• Ants •• Appliance recalls •• Appliance testing •• Attic •• Awnings •• Barns and ag blgs. •• Bathroom exhaust fan •• Bonding •• Carpet •• Ceiling fans •• Central vacuum •• Chimneys •• Chinese drywall •• Clothes dryer •• Dryer exhaust •• CO alarms •• Code violations •• Condemn a house •• Crawl space •• Detached carport •• Detached garage •• Dishwasher •• Docks •• Doors •• Electrical •• Electrical panel •• Electromagnetic radiation •• Fences •• Fireplaces •• Furnace •• Furniture •• Garage door opener •• Garbage disposal •• Generator •• GFCIs •• Gutters •• Ice maker •• Inspect in the rain •• Insulation •• Insurance •• Interior Finishes •• Grading & drainage •• Lead paint •• Level of thoroughness •• Lift carpet •• Low voltage wiring •• Microwave •• Mold •• Move things •• Help negotiate •• Not allowed •• Outbuildings •• Paint •• Permits •• Pilot lights •• Plumbing •• Plumbing under slab •• Pools •• Questions won't answer •• Radon •• Range/cooktop •• Receptacle outlet •• Refrigerator •• Reinspection •• Remove panel cover •• Repairs •• Repair estimates •• Retaining walls •• Roaches •• Rodents •• Roof •• Screens •• Seawalls •• Septic loading dye test •• Septic tank •• Sewer lines •• Shower pan leak test •• Shutters •• Sinkholes •• Smoke alarms •• Solar panels •• Specify repairs •• Sprinklers •• Termites •• Toilets •• Trees •• Troubleshooting •• Wall air conditioners •• Walk roof •• Washing machine •• Water heater •• Water pressure •• Water shut-offs •• Main water shut-off •• Water softener •• Water treatment systems •• Well •• Windows •• Window air conditioners •• Window blinds •• Wiring 

• • • • • • • • • • • • • • • • • • • • • • • • • • •

Here’s links to a collection of our other blog posts about ELECTRICAL WIRING:

• Which house appliances need a dedicated electrical circuit?

• Can a short circuit cause a high electric bill?

• What is the maximum spacing requirement for securing NM-cable (nonmetallic-sheathed cable)?

• Is it alright to just put wire nuts on the end of unused or abandoned NM-cable or wiring?

• What causes copper wires to turn green or black in an electric panel?  

• What are typical aluminum service entrance wire/cable sizes for the electrical service to a house?

• Why is it unsafe to bond neutral and ground wiring at subpanels?

• Should I get a lightning rod system to protect my house?

• Why is a strain relief clamp necessary for the cord connection to some electric appliances?  

• Does a wire nut connection need to be wrapped with electrical tape?

• What is the minimum clearance of overhead electric service drop wires above a house roof?

• What are the requirements for NM-cables entering an electric panel box? 

• What is the color code for NM cable (Romex®) sheathing?

• Why are old electrical components not always "grandfathered" as acceptable by home inspectors?

• How can I find out the size of the electric service to a house?

• Can old electrical wiring go bad inside a wall? 

• What is an open electrical splice?

• What are the most common electrical defects found in a home inspection? 

• What is the life expectancy of electrical wiring in a house? 

• What is an "open junction box"? 

• How dangerous is old electrical wiring? 

• What is a ground wire? 

• I heard that aluminum wiring is bad. How do you check for aluminum wiring?  

• What is "knob and tube" wiring?  

• What is the code requirement for receptacle outlets in a closet?

   Visit our ELECTRICAL and "DOES A HOME INSPECTOR…?” pages for other related blog posts on this subject, or go to the INDEX for a complete listing of all our articles.