## DC Wire Gauge Calculator: What Gauge Wire (12V, 24V, 48V)?

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

## NEC 310.16 Table: Copper And Aluminum Wire Ampacity Chart

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

## NEC 310.12 Table: Wire Sizes For 100-400 Amp Services (83% Rule)

310.12 NEC table discusses copper and aluminum wire sizes for 100 amp to 400 amp services and feeders. This relates to most households (National Electrical Code refers to homes using these terms: one-family dwellings, 2-family dwellings, and multifamily dwellings). Namely, the NEC section 310.12 includes these 5 distinct parts: Tabel 310.12 Single-Phase Dwelling Services and … Read more

## AWG To Circular Mils Chart (For 4/0 AWG To 20 AWG)

Wire size can be expressed as both gauge number (American Wire Gauge or AWG) or circular mils. In many cases, we will have to convert AWG to circular mils. To help you out, we will look into AWG to circular mils formula to show how the conversion is made. Further on, you will also find … Read more

## What Is W2 Wire On Thermostat? W2 Wire Thermostat Wiring (2nd Stage)

On many thermostats, you will find a W2 terminal. There is quite a lot of confusion about what is this W2 wire on a thermostat; namely, what is that W2 wire supposed to power. To help everybody out, we are going to explain exactly what the W2 wire thermostat is. Note: You will connect a … Read more

## Thermostat Wire Color Codes For 3-8 Wire Thermostats (Color-By-Color)

The thermostat wiring is a bit complicated. The 1st thing everybody has to learn is what each thermostat wire color means. To help you get started, we have prepared a full thermostat wiring color code (we’ll go wire-by-wire color-by-color for blue wire or black wire (C wires), orange wire, yellow wire, red wire, white wire, … Read more

## Thermostat Says Heat On But No Heat? 14 Culprits To Check For Now

“My thermostat says heat on but no heat. What’s the problem? How to get the heat back on?” This is one of the most frustrating thermostat issues in the winter. You do everything right; set the heat “ON” on the thermostat but no heat comes from the furnace. We will look into all 14 common … Read more

## Ground Wire Size For 100 Amp Service For Copper, Aluminum Wires

These ground wire sizes are notoriously difficult to figure out. If you are looking for the ground wire size for 100 amp service, you may see some conflicting wire sizes; from as little as 10 AWG to as big as 00 AWG. To help everybody out, we are going to show exactly how you can … Read more

## What Size Ground Wire For A 200 Amp Service? (3-Step Process)

All ground wires have to meet minimum ampacity criteria. That, of course, is also true of 200 amp ground wire. We are going to look into what size ground wire you need for a 200 amp service. On top of that, we will show you how you can figure out ground wire size for any … Read more

## THHN Vs THWN vs THWN-2 Wires: What Is THWN Wire Anyway?

When it comes to wires, there is quite a lot of confusion. Especially regarding the acronyms. Case and point: What is a THWN wire? What is the difference between THHN and THWN wire? Let’s address both of these questions to get a little clearer vision about wires. THWN stands for Thermoplastic Heat and Water-resistant Nylon-coated … Read more