Alright, figuring out what size you need for 90 amp service is fairly certain. We will have to consult the NEC 310.16 table for copper and aluminum wire capacities. On top of that, we will have to account for voltage drop if we want to have a 90 amp service 50, 100, 150, 200 feet … Read more
Figuring out a 125 amp wire size is fairly easy. We’ll show you how to figure that out. Where it gets a bit more difficult is at 125 amp service 50 feet, 100 feet, 150 feet, 200 feet, and up to 500 feet away. Here we have to account for voltage drop; we’ll explain how … Read more
For 400 amp service, we can rule out the standard AWG wires. We have to use thick kcmil copper and aluminum wires. On top of that, we have to account for voltage drop for services some 100s feet away. Alright, here is how you can figure out any wire size, including for 400 amp service: … Read more
For 150 amps, we will need quite a thick wire. Which wire gauge is needed for 150 amp service? We will look into a 150 amp service wire size at 0 feet. On top of that, we will also calculate the 150 amp wire size for service 50 feet, 100 feet, 150 feet, 200 feet, … Read more
If you want 80 amp service, you have to adequately size your breaker and pick the right sized wire. This is not all that simple, since we have to account for National Electricity Code (NEC) rules. To help everybody out with 80 amp circuits, we are going to answer both of these questions: What size … Read more
Alright, many homeowners have a problem with wire sizes. Here, we will focus on the 25-amp wire size. Some parts of this might be a bit complex, but when you boil it down, we are simply going to address these two questions: “What wire gauge do I need for a 25 amp breaker?” This one … Read more
Alright, figuring out wire size for a 15 amp service and 15 amp breaker seems easy in theory. In practice, we have to account for the distance from the source (15 amp wire size for 15 amp service) and the 80% NEC rule for 15 amp breaker sizing. We will show you exactly how to … Read more
12V voltage is massively prone to voltage drop. If you run a 12V wire for 10, 20, 50, 100, or even 200 feet, the voltage drop will be significant (since 12V is one of the lowest voltages; compared to 120V, or 220V, for example). Calculating the 12V voltage drop is not exactly easy, and you … Read more
Alright, figuring out what wire gauge you need for DC current is fairly simple; anybody can do it. We will show you exactly how to figure out DC wire size by the “back of the napkin” calculation. If you don’t have a napkin, don’t worry. To make things simpler, we have created two very useful … Read more
Whenever we need to need how many amps a wire can handle, we turn to the NEC 310.16 table. The 310.16 table is basically an ampacity chart; it tells us what is the ampacity of copper and aluminum wires. The full name for this table is “Table 310.16 Ampacities of Insulated Conductors with Not More … Read more