The task of obtaining voltage and current output readings from a rectifier begins with __________.

The task of obtaining voltage and current output readings from a rectifier starts with identifying the rectifier. This step is crucial because it allows the technician to determine the specific rectifier in use, understand its specifications, and ensure that it is functioning correctly. Each rectifier may have unique characteristics or settings that must be considered before any measurements are taken. By identifying the rectifier, the technician can proceed with the appropriate method for obtaining measurements confidently and accurately.

Once the rectifier is identified, the technician can then proceed to prepare the necessary equipment for taking the readings, such as calibrating the multimeter if needed. This foundational step is vital for ensuring that accurate data is collected, which is essential for assessing the performance and effectiveness of the cathodic protection system in place. Without first identifying the rectifier, any subsequent steps could lead to confusion or incorrect readings.