1. What is a Current Calculator for Wire?

Definition: This calculator determines the electrical current flowing through a wire based on power and voltage.

Purpose: It helps electricians and DIYers determine the current in a circuit to ensure proper wire sizing and circuit protection.

2. How Does the Calculator Work?

The calculator uses Ohm's Law formula:

Where:

• \( I \) — Current (amps)
• \( P \) — Power (watts)
• \( V \) — Voltage (volts)

Explanation: The power is divided by voltage to calculate the current flowing through the wire.

3. Importance of Current Calculation

Details: Proper current calculation ensures safe wire sizing, prevents overheating, and helps select appropriate circuit breakers.

4. Using the Calculator

Tips: Enter the power in watts and voltage in volts (default 120V). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is current calculation important for wiring?
A: It ensures wires don't overheat and helps select proper circuit protection devices.

Q2: What's a typical household voltage?
A: In North America, 120V is standard for most circuits, with 240V for large appliances.

Q3: How does current relate to wire size?
A: Higher currents require thicker wires to handle the load safely without overheating.

Q4: What if I know current and want to find power?
A: Rearrange the formula: \( P = I \times V \).

Q5: Does this work for both AC and DC circuits?
A: Yes, for simple resistive loads. For reactive loads (motors, transformers), power factor must be considered.