Placing a 12-lead ECG accurately is crucial for obtaining a reliable heart reading. Typically, the electrodes are positioned on the limbs and chest. The limb leads go on the arms and legs, while chest leads V1-V6 are placed across the chest in specific areas. Correct placement helps in diagnosing heart conditions effectively. Have you ever had to perform a 12-lead ECG yourself, or is this more about understanding the process for now?