Table of Contents
What is the diameter of 18 AWG stranded wire?
about 1 mm
A solid round 18 AWG wire is about 1 mm in diameter.
What does 18 AWG mean on wire?
Simply put, AWG is an acronym for the American Wire gauge. It’s basically a standard for measuring the thickness of wire. 18AWG wire is roughly 0.04 inches in diameter. The smaller the AWG of the wire, the thicker it is. Incidentally RG6 is coaxial cable and 18 AWG wire is not.

What is 18 AWG rated?
Types of Cord | Gauge Size Range | Ampacity of Current-Carrying Conductors (amperes) |
---|---|---|
Over 50 ft. (Over 15.2 m) | ||
SOOW – Service Oil Resistant Insulation/ Jacket Weather-resistant | 18 AWG | 7 Amps 5.6 Amps |
16 AWG | 10 Amps 7 Amps | |
14 AWG | 13 Amps 10 Amps |
What size is 18 2 wire?
Nomonal Cap. pF/ft: A-25.5, B-45.5
Wire Size | 18 AWG |
---|---|
# of Conductors | 2 Conductors |
O.D. (Inches) | 0.201 in. |
Alt to Belden # | 8760 |
Shielded | Yes |
What diameter is 18 gauge?
1.024 mm
Share:
GAUGE | SWG DIAMETER (Inches) | AWG DIAMETER (Millimeters) |
---|---|---|
16 Gauge Wire | 0.0640 in | 1.290 mm |
18 Gauge Wire | 0.0480 in | 1.024 mm |
20 Gauge Wire | 0.0360 in | 0.8128 mm |
22 Gauge Wire | 0.0280 in | 0.6426 mm |
How many amps can 18 AWG carry?
A conservative estimate for several feet of 18 AWG (American Wire Gauge) wire is 16 Amps. However, length plays an important role in the amount of Amps a wire can carry. If you have only 12 inches of wire, the 18 gauge wire can handle more than 16 Amps.

How many amps can 18 AWG handle?
Can 16 AWG connect to 18 AWG?
Yes the 16-gauge will work just fine. Make sure your connections are well insulated.
What size is 18 gauge wire in MM?
1.024mm
Wire Gauge Conversion
Wire Number (Gauge) | A.W.G. or B&S (Inches) | A.W.G. Metric (MM) |
---|---|---|
16 | 0.0508″ | 1.291mm |
17 | 0.0453″ | 1.15mm |
18 | 0.0403″ | 1.024mm |
19 | 0.0359″ | 0.9119mm |
What size is 18 gauge in inches?
15 U.S. Code § 206 – Standard gauge for sheet and plate iron and steel
Number of gauge | Approximate thickness in fractions of an inch | Weight per square meter in pounds avoirdupois |
---|---|---|
16 | 1/16 | 26.91 |
17 | 9/160 | 24.22 |
18 | 1/20 | 21.53 |
19 | 7/160 | 18.84 |
How many amps can 18 gauge wire handle at 12 volts?
Wire Amperage Capacity Chart
Recommended Length and Amperage for Automotive Wire while maintaining a 2% or less voltage drop at 12 volts | ||
---|---|---|
Automotive Wire Size | 5 Amps | 15 Amps |
18 Gauge Wire (AWG) | 7.3 ft | 2.4 ft |
16 Gauge Wire (AWG) | 11.5 ft | 3.8 ft |
14 Gauge Wire (AWG) | 18.4 ft | 6.1 ft |
How many amps can a 18 gauge wire hold?
Can you connect 18 gauge wire to 12 gauge wire?
NO don’t ever mix AWG Wire gauges they are different for a reason and the main reason is amperage. Sure it will work but it’s 100% wrong and the #18 gauge wire becomes a fusable link and potential fire hazard. It would be easier to use the #18 wire to pull #12 wire and make it right.
How many amps can a 18 AWG wire carry?
What is the max amps for 18 gauge wire?
The 16 amps maximum for 18 gauge wire is a conservative estimate for several feet of wire.
What thickness is 18 gauge wire?
Share:
GAUGE | SWG DIAMETER (Inches) | AWG DIAMETER (Millimeters) |
---|---|---|
18 Gauge Wire | 0.0480 in | 1.024 mm |
20 Gauge Wire | 0.0360 in | 0.8128 mm |
22 Gauge Wire | 0.0280 in | 0.6426 mm |
24 Gauge Wire | 0.0220 in | 0.5105 mm |
What thickness is 18 gauge steel?
15 U.S. Code § 206 – Standard gauge for sheet and plate iron and steel
Number of gauge | Approximate thickness in fractions of an inch | Weight per square foot in kilograms |
---|---|---|
16 | 1/16 | 1.134 |
17 | 9/160 | 1.021 |
18 | 1/20 | .9072 |
19 | 7/160 | .7938 |
What is the difference between THHN and THW wire?
THHN – Indicates a single conductor having flame-retardant and heat-resistant thermoplastic insulation with a jacket of extruded nylon or equivalent material. The wire is rated 90°C dry only. THW – Indicates a single conductor having flame-retardant, moisture- and heat-resistant thermoplastic insulation. The wire is rated 75°C wet or dry.
What are the dimensions of an AWG?
AWG chart AWG # Diameter (inch) Diameter (mm) Area (kcmil) Area (mm 2) 6 0.1620 4.1154 26.2514 13.3018 7 0.1443 3.6649 20.8183 10.5488 8 0.1285 3.2636 16.5097 8.3656 9 0.1144 2.9064 13.0927 6.6342
What is the difference between 8AWG and 14awg wire?
For example, the 14AWG size is a suitable wire for a 15Amp circuit breaker, whereas the 8AWG size is most appropriate for 40Amps of circuit breakers and load points. In short, the ampacity is inversely proportional to the size of AWG integers (from 0000AWG to 40AWG) e.g. the higher the AWG size, the lower the ampacity and vise versa.
What is American Wire Gauge (AWG)?
American Wire Gauge “AWG” is one of the important and standard tools in the US NEC (National Electrical Codes) used to sizing different cables and wires for multiple applications. Similarly to the SWG (Standard Wire Gauge) used in the UK, AWG is used to determine the ampacity of copper and aluminum wires for electrical wiring installations etc.