What voltage drop means
Voltage drop is the voltage lost along a wire because of its resistance. The longer and thinner the wire and the heavier the load, the bigger the drop.
Where it matters on a electrical job
Detached garages, well pumps, outbuildings and long landscape lighting runs are where voltage drop shows up. Sizing up the wire costs more copper but avoids dim lights and motors that burn out.
What it costs
For voltage drop, the closest koira.ai price is the outdoor lighting installation cost guide, near $3,500 for a typical job and $2,500 to $5,000 for most. The guide shows its sources and what moves the price. The voltage drop calculator prices a job line by line.
Work it out
- Free calculator: Voltage drop calculator
- Cost guide: Outdoor lighting installation cost
- Licensing: Electrical license rules by state
- Tools, templates and guides: Free electrical resources