1. What is an Amperage Calculator for Heated Floors?

Definition: This calculator determines the electrical current (amperage) required for electric heated floors based on power consumption and voltage.

Purpose: It helps homeowners and electricians properly size electrical circuits for radiant floor heating systems.

2. How Does the Calculator Work?

The calculator uses Ohm's Law formula:

Where:

• \( I \) — Current (Amperes)
• \( P \) — Power (Watts)
• \( V \) — Voltage (Volts)

Explanation: The power consumption is divided by the voltage to determine the current draw.

3. Importance of Proper Amperage Calculation

Details: Correct amperage calculation ensures safe operation, prevents circuit overloads, and helps select appropriate wire gauges and circuit breakers.

4. Using the Calculator

Tips: Enter the system's power rating in watts and the circuit voltage (default 120V). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's the typical power requirement for heated floors?
A: Most systems use 10-15 watts per square foot, with total power depending on the heated area.

Q2: Should I use 120V or 240V for my heated floor?
A: 240V systems are more efficient for larger areas as they draw less current for the same power.

Q3: How do I determine the power (watts) of my system?
A: Multiply the wattage per square foot by your total heated area.

Q4: What circuit breaker size should I use?
A: Choose a breaker rated for at least 125% of the calculated amperage.

Q5: Does this account for continuous load?
A: No, you should multiply the result by 1.25 for continuous loads (running 3+ hours).