Question

How many volts is a 3-phase?

Answer 1

In a 3-phase system, the voltage can vary depending on the region and the system type (whether it's a low voltage or high voltage system). However, the most common voltages are:

1. **Low Voltage Systems (Residential/Commercial):**
   - **208V (Line-to-Line Voltage)** in North America, typically for smaller systems or commercial buildings.
   - **400V (Line-to-Line Voltage)** is common in many parts of the world, especially in Europe and other regions following international standards.

2. **High Voltage Systems (Industrial/Utility):**
   - **480V (Line-to-Line Voltage)** is used for larger industrial machines and equipment in North America.
   - **600V (Line-to-Line Voltage)** is also seen in some industrial settings.

In a 3-phase system, the voltage between any two of the three phases (line-to-line) is often higher than the voltage from any one phase to neutral (line-to-neutral). The relationship between these two voltages is:

- **Line-to-Line Voltage** = √3 × **Line-to-Neutral Voltage** (about 1.732 times higher).

For example:
- In a 400V system (line-to-line), the line-to-neutral voltage would be around 230V (400V ÷ √3 ≈ 230V).

So, the exact voltage depends on your system, but these are the typical ranges you'll see in 3-phase systems.