Electrical · Lesson 12 of 13Beginner4 min read
Doing Your Own Work
Electrical work is the one home trade where a small mistake can hide inside a wall for years and then start a fire, or hurt someone right away. That’s why it’s the most regulated. This lesson explains who is allowed to do what, the tools worth owning, and a ladder of skills from your first safe jobs to the ones that belong with a licensed electrician.
Who may do electrical work
The rules are set by states, counties and cities, and they vary a lot. Most states require electricians to pass a test and be licensed, and their tests cover the National Electrical Code and state and local codes. Building and electrical regulations in most places are based on the National Electrical Code (NFPA 70), a model code that each state or city adopts, sometimes with changes of its own.
Some places let homeowners do certain electrical work on the home they own and live in, usually with a permit and an inspection. Others require a licensed electrician for almost everything. Even simple jobs may need a permit; for example, DOE notes that installing an electric-car charger may need permits from the local building authority, and in many areas a plan approved before the work starts. Before any electrical project, ask your local building or permit office what the rules are where you live.
Permits and inspections protect you. An inspector checks work before it’s hidden in the walls.
A basic tool kit
For the jobs on the first rungs of the ladder, you need very little:
- A flashlight kept near the panel.
- A small lamp or night-light you know works, for checking outlets and GFCIs.
- Labels and a pen for the panel directory.
- A plug-in GFCI for outdoor tools and wet areas.
- A multimeter with a category (CAT) rating suited to household circuits, and a non-contact voltage tester as a secondary check, if you go on to learn testing. Neither is a license to work near live parts (Lesson 9).
The safety principles
These are the habits electricians live by. They aren’t step-by-step instructions for any job:
- Power off at the source. De-energize the circuit at the breaker before touching any device or wire, and make sure no one can switch it back on.
- Test before you touch. Prove the circuit is dead with a rated tester checked on a known live source before and after (Lesson 9).
- Match the ratings. Breakers match the wire, receptacles match the circuit, and bulbs stay under the fixture’s limit.
- Keep the protection. GFCI, AFCI and tamper-resistant protection stay where they’re required.
- Stop when you’re unsure. Aluminum wiring, scorch marks, brittle insulation, or anything you don’t recognize means call an electrician.
First jobs
No tools beyond a lamp and a flashlight. Nothing to open or unscrew.
- Reset a tripped breaker
- Label your panel’s breakers
- Test and reset GFCIs every month
- Test smoke and CO alarms every month
- Press TEST on AFCI breakers monthly
- Replace bulbs with LEDs under the fixture’s wattage limit
- Replace a blown fuse with one of the same rating
- Spot warning signs: warm plates, loose plugs, flickering
Next steps
Planning and math. Still nothing opened up.
- Add up watts and amps on each circuit and spread out the load
- Read your meter and electric bill
- Use extension cords and power strips safely, temporarily
- Use a portable GFCI for outdoor tools
- Add plug-in or battery CO alarms where they’re needed
- Make a power-outage and generator safety plan
Where local rules allow homeowners
Only if your city or state permits it, often with a permit and inspection, with power off and proven dead. Otherwise, hire an electrician.
- Replace a receptacle or switch like-for-like
- Replace a light fixture like-for-like
- Install a dimmer rated for your LED bulbs
Leave these to licensed electricians
They need a license, permits and inspections, and training a homeowner doesn’t have.
- Anything inside the panel, including breakers
- Service upgrades, meters and service wires (with the utility)
- New circuits and new outlets
- Aluminum-wiring repairs (CPSC: don’t try it yourself)
- Adding GFCI and AFCI breakers
- Hardwired smoke alarms
- EV chargers, solar, batteries and standby generators
- Generator transfer switches (OSHA: a qualified electrician)
StopLeave these to a licensed electrician
Anything inside the panel; service upgrades and meters; new circuits and new outlets; aluminum-wiring repairs; adding GFCI or AFCI breakers; hardwired smoke alarms; EV chargers, solar, batteries, generators and transfer switches. CPSC, the U.S. Fire Administration and OSHA all point these to qualified, licensed or certified professionals.
Check yourself
Tap an answer to check it, or open “Show the answer.”
Who decides whether a homeowner may do electrical work on their own home?
Show the answer
State and local rules, which vary by place. Rules vary. Ask your local building or permit office before any project.
What do electricians’ license tests cover, according to BLS?
Show the answer
The National Electrical Code and state and local electrical codes. Most states require electricians to pass a test and be licensed.
Which job is on the first rung of the ladder?
Show the answer
Testing GFCIs monthly. Testing GFCIs and alarms and resetting breakers are first jobs anyone can learn.
What is the purpose of an electrical inspection?
Show the answer
To check work that will be hidden in the walls. An inspector checks the work before it is covered up.
Go deeper
- U.S. Bureau of Labor Statistics, Occupational Outlook Handbook: Electricians (last modified August 27, 2026) The BLS Occupational Outlook Handbook on licensing and training.
- U.S. Department of Energy, Alternative Fuels Data Center: Charging Electric Vehicles at Home An example of permit rules: EV charging at home.
- U.S. Consumer Product Safety Commission: Home Electrical Safety Checklist (Publication 513) CPSC’s home electrical safety checklist.
- Being an Adult 101: Reset a Tripped Circuit Breaker Your first job: reset a breaker and label the panel.
- Being an Adult 101: Test and Reset a GFCI Outlet Test and reset a GFCI.
- Being an Adult 101: Test Smoke and CO Alarms Test smoke and CO alarms.
Sources
- U.S. Bureau of Labor Statistics, Occupational Outlook Handbook: Electricians (last modified August 27, 2026)
- U.S. Department of Energy, Alternative Fuels Data Center: Charging Electric Vehicles at Home
- U.S. Department of Energy: Electrical Safety Handbook (DOE-HDBK-1092-2013)
- Virginia Tech Environmental Health and Safety: Electrical Safe Work Condition
- University of Hawaiʻi Maui College, Building Maintenance & Construction (open textbook), 5.6 Receptacle and Switch Wiring
- OSHA 3075: Controlling Electrical Hazards (2002, revised)
- U.S. Consumer Product Safety Commission: Repairing Aluminum Wiring (Publication 516, 2011)
- U.S. Consumer Product Safety Commission: Preventing Home Fires, Arc Fault Circuit Interrupters (Publication 5133)
- U.S. Fire Administration: Smoke Alarms
- U.S. Fire Administration: Electrical Fire Safety (flyer)
- OSHA Fact Sheet: Using Portable Generators Safely (FS-3286)
- U.S. Consumer Product Safety Commission: GFCI Fact Sheet (Publication 099)
A free course from Teddy Rook Book. It explains how home electrical systems work in general and follows U.S. sources; your local electrical code, your inspector and a licensed electrician are the final word for your home.