The question of which is bigger – 4/0 AWG wire vs 250 MCM wire – is quite an obvious one. In the US, we have two types of wires: smaller AWG wires and bigger MCM (or kcmil) wires. Here is where the dilemma comes from: 4/0 AWG is the biggest wire gauge among the smaller … Read more
The aluminum wire ampacity chart basically tells you how many amps can aluminum wires handle. Example: What is #2 AWG wire rated for? Just check the chart, and you will see that 2 AWG gauge aluminum wire has a 90A ampacity at a median 75ยฐC (167ยฐF) temperature. The following ampacity chart for aluminum wires includes … Read more
How many watts can a wire handle? This is quite easy to calculate, and we will explain how you can do it. On top of that, we include wire gauge wattage charts (with amps) for every relevant AWG gauge wire (0000 AWG, 000 AWG, 00 AWG, 0 AWG, 1 AWG, 2 AWG, 3 AWG, 4 … Read more
kcmil or MCM is a measure of wire thickness. We use circular mils (kcmil = kilo circular mils or 1000 circular mils) to determine the cross-section of a wire. Of course, circular mils are quite an abstract unit; we much prefer to use mm2 or square millimeters. We have 250 kcmil, 300 kcmil, and all … Read more
Both kcmil and AWG denote the cross-section of wires (electrical conductors, to be exact). That means we can easily convert kcmil to AWG and AWG to kcmil. Here is what each of these wire size units means: kcmil (or MCM; it’s the same) stands for thousands of circular mils. These are the big wires that … Read more
6 AWG wire is one of the most common gauge wires. As with any wire, the key questions here are how many watts can a 6 gauge wire handle and how many amps can a 6 gauge wire handle (6 gauge wire amp rating). We are, of course, talking maximum allowable amps and watts throughout … Read more
kcmil or MCM are considered bigger wires (bigger than AWG wires). We generally use these thick wires when we need more than 200 amp service. Which kcmil wire exactly we need for carrying high currents is determined by the kcmil wire size chart (check the chart further on). Example: What is the ampacity of 400 … Read more
Both AWG and mm are basically a measure of wire diameter (thickness). AWG or American Wire Gauge is a diameter unit used predominantly in the US, while a metric mm (millimeters) is used around the world. In many cases, you will need to convert AWG to mm like this: In theory, you convert AWG gauge … Read more
Both AWG and mm2 are measures for the size of the wire, either diameter (AWG) or cross-section (mm2). AWG stands for American Wire Gauge and is directly connected with a diameter of a wire. From that diameter, you can calculate what the cross-section of the wire is. Basically, you convert AWG to mm2. The AWG … Read more
You need the correct wire size for the job. To calculate wire size, you will need to use ampacity and NEC 80% rule. We will show you how to easily calculate wire size by hand, using a wire gauge calculator, and at the end, you will also find a complete chart of what size wire … Read more