1. What is SWG?

SWG (Standard Wire Gauge) is a British wire measurement system that specifies wire diameters. It's widely used for electrical wiring and sheet metal thickness.

2. How Does the Calculator Work?

The calculator uses the SWG to diameter conversion formula:

Where:

• \( SWG \) — Standard Wire Gauge number (0-50)
• 0.127 — Constant representing the diameter of SWG 36 in mm
• 92 — Geometric progression constant
• 39 — Number of steps between SWG 0000000 and SWG 36

3. Importance of Wire Gauge

Details: Knowing the exact diameter is crucial for electrical applications, determining current capacity, and mechanical strength requirements.

4. Using the Calculator

Tips: Enter the SWG number (0-50). SWG 0 is thicker than SWG 50. The calculator will output the diameter in millimeters.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between SWG and AWG?
A: SWG (Standard Wire Gauge) is British, while AWG (American Wire Gauge) is US standard. They have different numbering systems and diameters.

Q2: What is SWG 0?
A: SWG 0 is approximately 8.23 mm in diameter (the thickest standard SWG size).

Q3: What is the smallest SWG size?
A: SWG 50 is the smallest at 0.025 mm diameter.

Q4: Why does wire gauge matter?
A: Thicker wires (lower SWG numbers) can carry more current without overheating.

Q5: How accurate is this calculator?
A: It provides theoretical values based on the standard formula. Actual wire diameters may vary slightly by manufacturer.