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Free NEC calculators
Wire size charts
- All wire size charts
- What Size Wire for a 15 Amp Breaker?
- What Size Wire for a 20 Amp Breaker?
- What Size Wire for a 25 Amp Breaker?
- What Size Wire for a 30 Amp Breaker?
- What Size Wire for a 35 Amp Breaker?
- What Size Wire for a 40 Amp Breaker?
- What Size Wire for a 45 Amp Breaker?
- What Size Wire for a 50 Amp Breaker?
- What Size Wire for a 60 Amp Breaker?
- What Size Wire for a 70 Amp Breaker?
- What Size Wire for an 80 Amp Breaker?
- What Size Wire for a 90 Amp Breaker?
- What Size Wire for a 100 Amp Breaker?
- What Size Wire for a 110 Amp Breaker?
- What Size Wire for a 125 Amp Breaker?
- What Size Wire for a 150 Amp Breaker?
- What Size Wire for a 175 Amp Breaker?
- What Size Wire for a 200 Amp Breaker?
- What Size Wire for a 225 Amp Breaker?
- What Size Wire for a 250 Amp Breaker?
- What Size Wire for a 300 Amp Breaker?
- What Size Wire for a 350 Amp Breaker?
- What Size Wire for a 400 Amp Breaker?
- What Size Wire for a 450 Amp Breaker?
- What Size Wire for a 500 Amp Breaker?
- What Size Wire for a 600 Amp Breaker?
- What Size Wire for a 700 Amp Breaker?
- What Size Wire for an 800 Amp Breaker?
- What Size Wire for a 1000 Amp Breaker?
- What Size Wire for a 1200 Amp Breaker?
- What Size Wire for a 100 Amp Service?
- What Size Wire for a 110 Amp Service?
- What Size Wire for a 125 Amp Service?
- What Size Wire for a 150 Amp Service?
- What Size Wire for a 175 Amp Service?
- What Size Wire for a 200 Amp Service?
- What Size Wire for a 225 Amp Service?
- What Size Wire for a 250 Amp Service?
- What Size Wire for a 300 Amp Service?
- What Size Wire for a 350 Amp Service?
- What Size Wire for a 400 Amp Service?
- What Size Wire for a 30 Amp Sub Panel?
- What Size Wire for a 40 Amp Sub Panel?
- What Size Wire for a 50 Amp Sub Panel?
- What Size Wire for a 60 Amp Sub Panel?
- What Size Wire for a 70 Amp Sub Panel?
- What Size Wire for a 100 Amp Sub Panel?
- What Size Wire for a 125 Amp Sub Panel?
- What Size Wire for a 150 Amp Sub Panel?
- What Size Wire for a 200 Amp Sub Panel?
Ground wire sizes
- All ground wire sizes
- What Size Ground Wire for a 15 Amp Breaker?
- What Size Ground Wire for a 20 Amp Breaker?
- What Size Ground Wire for a 25 Amp Breaker?
- What Size Ground Wire for a 30 Amp Breaker?
- What Size Ground Wire for a 35 Amp Breaker?
- What Size Ground Wire for a 40 Amp Breaker?
- What Size Ground Wire for a 45 Amp Breaker?
- What Size Ground Wire for a 50 Amp Breaker?
- What Size Ground Wire for a 60 Amp Breaker?
- What Size Ground Wire for a 70 Amp Breaker?
- What Size Ground Wire for an 80 Amp Breaker?
- What Size Ground Wire for a 90 Amp Breaker?
- What Size Ground Wire for a 100 Amp Service or Breaker?
- What Size Ground Wire for a 110 Amp Service or Breaker?
- What Size Ground Wire for a 125 Amp Service or Breaker?
- What Size Ground Wire for a 150 Amp Service or Breaker?
- What Size Ground Wire for a 175 Amp Service or Breaker?
- What Size Ground Wire for a 200 Amp Service or Breaker?
- What Size Ground Wire for a 225 Amp Service or Breaker?
- What Size Ground Wire for a 250 Amp Service or Breaker?
- What Size Ground Wire for a 300 Amp Service or Breaker?
- What Size Ground Wire for a 350 Amp Service or Breaker?
- What Size Ground Wire for a 400 Amp Service or Breaker?
- What Size Ground Wire for a 450 Amp Breaker?
- What Size Ground Wire for a 500 Amp Breaker?
- What Size Ground Wire for a 600 Amp Breaker?
- What Size Ground Wire for a 700 Amp Breaker?
- What Size Ground Wire for an 800 Amp Breaker?
- What Size Ground Wire for a 1000 Amp Breaker?
- What Size Ground Wire for a 1200 Amp Breaker?
Wire ampacity
- All ampacity pages
- How Many Amps Can 14 AWG Copper Wire Handle?
- How Many Amps Can 12 AWG Copper Wire Handle?
- How Many Amps Can 10 AWG Copper Wire Handle?
- How Many Amps Can 8 AWG Copper Wire Handle?
- How Many Amps Can 6 AWG Copper Wire Handle?
- How Many Amps Can 4 AWG Copper Wire Handle?
- How Many Amps Can 3 AWG Copper Wire Handle?
- How Many Amps Can 2 AWG Copper Wire Handle?
- How Many Amps Can 1 AWG Copper Wire Handle?
- How Many Amps Can 1/0 AWG Copper Wire Handle?
- How Many Amps Can 2/0 AWG Copper Wire Handle?
- How Many Amps Can 3/0 AWG Copper Wire Handle?
- How Many Amps Can 4/0 AWG Copper Wire Handle?
- How Many Amps Can 250 kcmil Copper Wire Handle?
- How Many Amps Can 300 kcmil Copper Wire Handle?
- How Many Amps Can 350 kcmil Copper Wire Handle?
- How Many Amps Can 400 kcmil Copper Wire Handle?
- How Many Amps Can 500 kcmil Copper Wire Handle?
- How Many Amps Can 600 kcmil Copper Wire Handle?
- How Many Amps Can 700 kcmil Copper Wire Handle?
- How Many Amps Can 750 kcmil Copper Wire Handle?
- How Many Amps Can 1000 kcmil Copper Wire Handle?
- How Many Amps Can 12 AWG Aluminum Wire Handle?
- How Many Amps Can 10 AWG Aluminum Wire Handle?
- How Many Amps Can 8 AWG Aluminum Wire Handle?
- How Many Amps Can 6 AWG Aluminum Wire Handle?
- How Many Amps Can 4 AWG Aluminum Wire Handle?
- How Many Amps Can 3 AWG Aluminum Wire Handle?
- How Many Amps Can 2 AWG Aluminum Wire Handle?
- How Many Amps Can 1 AWG Aluminum Wire Handle?
- How Many Amps Can 1/0 AWG Aluminum Wire Handle?
- How Many Amps Can 2/0 AWG Aluminum Wire Handle?
- How Many Amps Can 3/0 AWG Aluminum Wire Handle?
- How Many Amps Can 4/0 AWG Aluminum Wire Handle?
- How Many Amps Can 250 kcmil Aluminum Wire Handle?
- How Many Amps Can 300 kcmil Aluminum Wire Handle?
- How Many Amps Can 350 kcmil Aluminum Wire Handle?
- How Many Amps Can 400 kcmil Aluminum Wire Handle?
- How Many Amps Can 500 kcmil Aluminum Wire Handle?
- How Many Amps Can 600 kcmil Aluminum Wire Handle?
- How Many Amps Can 700 kcmil Aluminum Wire Handle?
- How Many Amps Can 750 kcmil Aluminum Wire Handle?
- How Many Amps Can 1000 kcmil Aluminum Wire Handle?
Conduit fill
- All conduit fill pages
- 1/2" EMT Conduit Fill: How Many Wires Fit?
- 3/4" EMT Conduit Fill: How Many Wires Fit?
- 1" EMT Conduit Fill: How Many Wires Fit?
- 1-1/4" EMT Conduit Fill: How Many Wires Fit?
- 1-1/2" EMT Conduit Fill: How Many Wires Fit?
- 2" EMT Conduit Fill: How Many Wires Fit?
- 2-1/2" EMT Conduit Fill: How Many Wires Fit?
- 3" EMT Conduit Fill: How Many Wires Fit?
- 3-1/2" EMT Conduit Fill: How Many Wires Fit?
- 4" EMT Conduit Fill: How Many Wires Fit?
- 1/2" Schedule 40 PVC Conduit Fill: How Many Wires Fit?
- 3/4" Schedule 40 PVC Conduit Fill: How Many Wires Fit?
- 1" Schedule 40 PVC Conduit Fill: How Many Wires Fit?
- 1-1/4" Schedule 40 PVC Conduit Fill: How Many Wires Fit?
- 1-1/2" Schedule 40 PVC Conduit Fill: How Many Wires Fit?
- 2" Schedule 40 PVC Conduit Fill: How Many Wires Fit?
- 2-1/2" Schedule 40 PVC Conduit Fill: How Many Wires Fit?
- 3" Schedule 40 PVC Conduit Fill: How Many Wires Fit?
- 3-1/2" Schedule 40 PVC Conduit Fill: How Many Wires Fit?
- 4" Schedule 40 PVC Conduit Fill: How Many Wires Fit?
- 5" Schedule 40 PVC Conduit Fill: How Many Wires Fit?
- 6" Schedule 40 PVC Conduit Fill: How Many Wires Fit?