1. What is the Eecol Voltage Drop Calculator for Canada?

Definition: This calculator estimates the voltage drop in electrical circuits based on conductor properties and current flow, following Canadian electrical standards.

Purpose: It helps electricians and engineers ensure proper voltage levels in electrical installations across Canada.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( VD \) — Voltage drop (volts)
• \( \rho \) — Resistivity of conductor material (ohm-m)
• \( L \) — Length of conductor (meters)
• \( I \) — Current flow (amps)
• \( A \) — Cross-sectional area of conductor (m²)

Explanation: The formula calculates voltage drop in a two-wire circuit (hence the factor of 2) based on conductor properties and current.

3. Importance of Voltage Drop Calculation

Details: Proper voltage drop calculation ensures electrical devices receive adequate voltage for operation and prevents excessive power loss in conductors.

4. Using the Calculator

Tips: Enter the conductor resistivity (default 1.72×10⁻⁸ ohm-m for copper), length in meters, current in amps, and conductor cross-sectional area in m². All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is the factor 2 included in the formula?
A: The factor 2 accounts for the two conductors (hot and neutral) in a single-phase circuit.

Q2: What's the typical resistivity value for copper?
A: Copper has a resistivity of about 1.72×10⁻⁸ ohm-m at 20°C. This increases with temperature.

Q3: How does this comply with Canadian electrical codes?
A: The calculator follows the basic principles of CSA C22.1, Canadian Electrical Code.

Q4: What's the maximum acceptable voltage drop?
A: Canadian standards typically recommend ≤3% voltage drop for feeders and ≤5% for branch circuits.

Q5: How do I convert AWG to cross-sectional area?
A: Use our AWG to mm² conversion tool or refer to standard wire gauge tables.