WireGaugeCalc Calculators
Every page opens with the calculator embedded and the NEC article cited. Pick the one you need, enter your values, and read the answer. Free, no signup, works offline.
Wire & conductor size
68 pagesPick the right gauge for a load, service, or subpanel from the NEC 310.16 ampacity tables.
Wire Gauge Calculator
100 Amp Wire Size
50 Amp Wire Size
200 Amp Wire Size
40 Amp Wire Size
What Size Wire For 100 Amp Service
Wire Size For 20 Amp
60 Amp Wire Size
30 Amp Wire Size
100 Amp Service Wire Size
Dc Wire Size Calculator
What Size Wire For 20 Amp Circuit
200 Amp Service Ground Wire Size
Amp Wire Size
Range Wire Size
400 Amp Wire Size
Grounding Wire Size
100 Amp Wire Gauge
Ground Wire Size For 100 Amp Service
Sizing Ground Wire
150 Amp Service Wire Size
Nec Wire Size
600 Amp Wire Size
Equipment Grounding Conductor Size
Ground Wire Size Calculator
250 Amp Wire Size
Awg Calculator
200 Amp Service Wire Size Copper
100 Amp Wire Size Calculator
Ground Wire Size For 400 Amp Service
50 Amp Wire Size Copper
What Size Cable For 200 Amp Service
Multiple Wire Gauge Calculator
150a Wire Size
Electical Wire Size
Electric Service Line Size
Minimum Gage Copper Wire For Grounding Antenna
Sub Panel Load Calculator
125 Amp Panel Wire Size
Dc Current Wire Size Calculator
25 Kva Secondary Wire Sizing
Ground Conductor Size For 50 Amp Breaker
Calculate Current Rating Cable
Page Wire Size Calculator
Grounding Conductor Size For 100 Amp
AWG For 60 Amp Service
24v Ac Wire Size Calculator
600 Amp Ground Wire Size
10 Awg Copper Ok for Ground Wire
16 Gauge Wire Length For 1 Amp
2-20 Amp Breaker Wire Size
60 Amp Breaker Wire Size Copper
99 Amps Of 120v Needs What Size Wire
Aluminum Cable For 500 Foot Electrical Service Run
Dc Circuit Breaker Size For 4 Wire Gauge
Diameter Of A Wire Cal
Estimate Wiring Cable For A Basement
Size Of Conductor To Grounding Rod
Size Of Grounding Electrodes
Size Wire For House Feed
Speaker 70 Volt Page Wire Size Calculator
Speaker Page Wire Size Calculator
What Gauge Wire To Ground A Generator
60 Amp Wire Size Copper
Ground Size For 125 Amp Service
10 Gauge Wire Amperage Load 12v
150 Amp Motor Ground Wire Size
250 Amp Service Wire Size
Voltage drop
10 pagesCheck the drop on a run and see whether it stays inside the 3% guideline.
Conduit fill
18 pagesFill percentage for EMT, PVC, and RMC from the NEC Chapter 9 tables.
Conduit Fill Calculator
Box Fill Calculations
Conduit Size Calculator
NEC Conduit Fill
Emt Conduit Fill
Conduit Calculator
Raceway Fill Calculator
Pvc Conduit Fill
Calculating Conduit Fill
PVC Conduit Size How Many Wires
1.5in Conduit
Conduit For Solar Cable
Bare Conductor Conduit Fill
Bare Ground Conductor Conduit Fill
Conduit For Single 14 Awg Cable
PV Wire Roof Conduit
If You Have Six 12 AWG Wires In A Conduit
Box Fill Calculator App
Box fill
3 pagesMinimum box volume from the conductor, device, and ground allowances in 314.16(B).
Ampacity & derating
19 pagesAllowable ampacity for a conductor at its termination temperature.
10 Gauge Wire Amps
Max Amps For 12 Gauge Wire
Circuit Ampacity Calculator
10 Ga Wire Amp Rating
Max Amps For 8 Gauge Wire
Maximum Amperage For 14 Gauge Wire
How Many Amps Will 10 Gauge Wire Carry
Dc Wire Ampacity
250 Kcmil Ampacity
Ampacity With Ambient Temp
400 Amps Through Wire
#2 Aluminum Wire Amps
How Many Amps Is Hp
Amp Rating 5hp 460v Motor
Guage To Amps
Calculating Ampacity For Motors
14 THHN Ampacity
#8 Aluminum Wire Ampacity
Calculate Ampacity Of 12 AWG
More calculators
57 pagesOhm’s law and the rest of the on-the-job math.
Electrical Calculator
Load Calculator
Conduit Bending Calculator
Home Generator Sizing Calculator
Electric Load Calculator
40 Amp Wire
Residential Load Calculator
Full Load Amps Calculator
Bending Calculator
Breaker Size Calculator
NEC Service Load Calculation
Conduit Offset Calculator
HP to FLA
Motor Calculator
Watts Law Calculator
Ohm Law Calc
Electrical Load Calculator App
Motor Fla Calculator
7.5 Hp Motor Amps
Dc Circuit Calculator
Home Generator Wattage Calculator
400 Hp 460v Motor Fla
Electrical Residential Online Load Calculater
Service Load Calculation
Electrician Calculator App
FLC of 75hp 1000 Volt Motor
Electric Vehicle Charging Calculator
Home Load Calculator
Hp To Flc
2hp Motor Flc
Extension Cord Calculator
Multiplier For A 10 Degree Bend
Racyway Fill
Online Load Calculater
40 Hp Motor Amps
0.8 Hp Motor Fla
1.25hp to Amps
10 Gauge Cable Length Limits
70 Hp Fla
75 Foot Run 50 Amp Service
80 Amps Aluminum Wire
900 Amp Electrical Wire
Amps On 525hp
Calculate Va Of Continuous And Noncontinuous Loads
Dc Voltage Calculator Length
Fill A 5.5 By 2.5 Box
Find Maximum Current In Wire
Full Load Amps 50 Hp
Level 1 Ev Calculator
Load Calculation For Small Apartment
Nec Number Of Circuits Per Pipe
125 Horsepower Motor Amps
Home Generators Size Calculators
100 Hp Motor Fla
How Many Amps Does A 1.5 Hp Motor Draw
Nec Load Commercail Calculation
NEC 220 Calculator