Electrical Power Formula:
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The Watts to Amps conversion calculates the electric current in amperes (A) from power in watts (W) and voltage in volts (V). This is essential for electrical system design and safety calculations.
The calculator uses the electrical power formula:
Where:
Example: For 600W at 12V: \( \frac{600}{12} = 50A \)
Details: Knowing the current draw is crucial for selecting proper wire gauges, fuses, circuit breakers, and ensuring electrical system safety and efficiency.
Tips: Enter power in watts and voltage in volts. The calculator will compute the current in amperes. Default values show the 600W at 12V calculation (50A).
Q1: Why is 600W at 12V important?
A: This is a common calculation for automotive and RV electrical systems where 12V is standard and 600W represents a medium-power appliance.
Q2: What wire gauge do I need for 50A?
A: Typically 6 AWG for copper wire in short runs, but consult wire gauge charts as length affects voltage drop.
Q3: Can I run 600W on a 12V car battery?
A: Yes, but only briefly - a 600W load would drain a typical car battery in about 30-40 minutes.
Q4: How does this relate to inverter sizing?
A: Inverters are rated in watts - a 600W inverter would draw about 50A at 12V at full load.
Q5: Does this calculation work for AC and DC?
A: This simple formula works for DC. For AC, power factor must be considered.