What is SWG table?

British Standard Wire Gauge (often abbreviated to Standard Wire Gauge or SWG) is a unit for denoting wire size given by BS 3737:1964 (now withdrawn). It is also known as the Imperial Wire Gauge or British Standard Gauge.

How do you calculate SWG of copper wire?

Stranded wire gauges should be measured by calculating the equivalent cross sectional copper area. First, measure the bare diameter of a single strand and locate the circular mils value in the row that matches your measurement. Second, multiply the circular mils by the number of strands in the cable.

How do you find SWG?

With our expertise and range of stock, we can meet all your ferrous and non ferrous requirements.

  1. Standard Wire Gauge to Inches and Millimetres. 1 Swg = 0.300” / 7.620mm. 16 Swg = 0.064” / 1.626mm. 2 Swg = 0.276” / 7.010mm.
  2. Conversions – Inches to Metric (mm) Inches. Metric(mm)
  3. Length Formulae. Weight Formulae. To convert.

Does AWG measure ampacity?

AWG – American Wire Gauge One of the most important roles of American Wire Gauge is to measure the current carrying capacity in Amps of wire (aka Wire Ampacity = The amount of maximum current that a conductor can carry continuously without exceeding its temperature rating.

What does SWG stand for?


Acronym Definition
SWG Standard Wire Gauge
SWG Sprouted Whole Grain
SWG Security Working Group (Pentagon Renovation Project)
SWG Standardization Working Group (various organizations)

What amperage is an 18 SWG cable?


Insulation Materials: Polyethylene Neoprene Polyurethane Polyvinylchloride (Semi-Rigid) Kynar (135°C) Polyethylene (Crosslinked) Thermoplastic Elastomers
22 AWG 8 11
20 AWG 10 14
18 AWG 15 20
16 AWG 19 26

How is SWG measured?

The thickness of a wire is often given as a Standard Wire Gauge, or SWG. This is number from 0000000 or 7/0 (thickest) to 50 (thinnest). The gauge of most wire used in electronics is between 20 and 30. Often, a wire gauge will be stated followed by “swg”, so 26 swg, etc.

How do you calculate ampacity of a wire?

Ampacity can be calculated by dividing the Wattage by the rated voltage. The quotient is the expected Amperage of the circuit.

What is the purpose of Standard Wire Gauge SWG?

Wire gauge is a measurement of wire diameter. This determines the amount of electric current the wire can safely carry, as well as its electrical resistance and weight.

How many watts can 18 AWG handle?

600 Watts
Matching Extension Cord to Load

Extension Cord Wire Gauges, Amperage Rating, and Wattage
Wire Gauge Amperage Rating Wattage Rating
#18 5 Amps 600 Watts
#16 7 Amps 840 Watts
#14 12 Amps 1,440 Watts

How is amp rating calculated?

To calculate amperage, use the equation Amps = Watts/Volts. For example, a 200W light bulb on a 120V circuit would draw about 1.67 amps. Calculate the TOTAL amperage rating of all devices. Make sure they DO NOT exceed 80% of the breaker’s total amperage.

How many amps can 3 AWG wire handle?

Wire Size and Amp Ratings

Wire Size 75°C (167°F)
AWG (mm²) Copper
3 (26.7) 100
2 (33.6) 115
1 (42.4) 130