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| URL | https://www.southwire.com/calculator-vdrop |
| Last Crawled | 2026-04-14 14:39:09 (6 days ago) |
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| Meta Title | Voltage Drop Calculator | Southwire |
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| Boilerpipe Text | Helps determine the proper wire size for an electrical circuit based on the voltage drop and current carrying capacity of an electrical circuit.
Calculate Your Voltage Drop
Determines wire size to meet specific voltage drop limits or calculates voltage drop for a specific conductor run. When sizing conductors, calculations limits wire size to voltage drop and NEC ampacity. Southwire's Re
3
TM
Voltage Drop Calculator is designed for applications using AWG and KCMIL sizes only. How to calculate voltage drop, you ask? Download our mobile apps or enter your values in the web calculator below!
MC
AP
 ®
Cost Calculator
Quickly and easily illustrates the potential labor cost savings when using MC
AP®
Â
cable in place of traditional MC cable.
Learn More
Re
3
TM
Conduit Fill Calculator
Conduit Fill is the percent of area inside the conduit taken up by the cables. Provides quick and easy results for the conduit fill percent, per NEC
®
guidelines.
Learn More
SIM
pull
Â
®
Cable Pull Calculator
Helps to estimate and manage cable installation projects. Provides the ability to alter data that indicates tension or sidewall pressure.
Learn More |
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# Re3TM Voltage Drop Calculator
Helps determine the proper wire size for an electrical circuit based on the voltage drop and current carrying capacity of an electrical circuit.
1. [Resources](https://www.southwire.com/resources)
2. [Calculators](https://www.southwire.com/calculators)
3. Voltage Drop Calculator
## Calculate Your Voltage Drop
Determines wire size to meet specific voltage drop limits or calculates voltage drop for a specific conductor run. When sizing conductors, calculations limits wire size to voltage drop and NEC ampacity. Southwire's Re3TM Voltage Drop Calculator is designed for applications using AWG and KCMIL sizes only. How to calculate voltage drop, you ask? Download our mobile apps or enter your values in the web calculator below\!
### Download for Mobile
[Android](https://play.google.com/store/apps/details?id=com.southwire.voltageDrop) [iOS](https://itunes.apple.com/us/app/southwire-voltage-drop-calc/id440338420)

#### MCAP ® Cost Calculator
Quickly and easily illustrates the potential labor cost savings when using MCAP® cable in place of traditional MC cable.
[Learn More](https://www.southwire.com/calculator-mcap)

#### Re3TM Conduit Fill Calculator
Conduit Fill is the percent of area inside the conduit taken up by the cables. Provides quick and easy results for the conduit fill percent, per NEC® guidelines.
[Learn More](https://www.southwire.com/calculator-conduit)

#### SIMpull ® Cable Pull Calculator
Helps to estimate and manage cable installation projects. Provides the ability to alter data that indicates tension or sidewall pressure.
[Learn More](https://www.southwire.com/calculator-simpull)
[Help us improve — click here to go suggest changes or new features.](https://www.southwire.com/calculators/calculator-suggestion-form)
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| Readable Markdown | Helps determine the proper wire size for an electrical circuit based on the voltage drop and current carrying capacity of an electrical circuit.
## Calculate Your Voltage Drop
Determines wire size to meet specific voltage drop limits or calculates voltage drop for a specific conductor run. When sizing conductors, calculations limits wire size to voltage drop and NEC ampacity. Southwire's Re3TM Voltage Drop Calculator is designed for applications using AWG and KCMIL sizes only. How to calculate voltage drop, you ask? Download our mobile apps or enter your values in the web calculator below\!

#### MCAP ® Cost Calculator
Quickly and easily illustrates the potential labor cost savings when using MCAP® cable in place of traditional MC cable.
[Learn More](https://www.southwire.com/calculator-mcap)

#### Re3TM Conduit Fill Calculator
Conduit Fill is the percent of area inside the conduit taken up by the cables. Provides quick and easy results for the conduit fill percent, per NEC® guidelines.
[Learn More](https://www.southwire.com/calculator-conduit)

#### SIMpull ® Cable Pull Calculator
Helps to estimate and manage cable installation projects. Provides the ability to alter data that indicates tension or sidewall pressure.
[Learn More](https://www.southwire.com/calculator-simpull) |
| Shard | 74 (laksa) |
| Root Hash | 1186594921620002074 |
| Unparsed URL | com,southwire!www,/calculator-vdrop s443 |