What is the easiest method to calculate the total load on an open wye-open delta bank?

Calculating the total load on an open wye-open delta bank is best achieved by calculating the individual transformer loads and adding them together. This method provides an accurate and precise representation of the load on the entire bank. By determining the load on each transformer, you can sum these values to get a comprehensive understanding of the total load, taking into account variations in individual transformer performance and usage.

Using nameplate data could be misleading, as this information primarily reflects rated capacities rather than real-time load conditions. Estimating the load based on previous data can lead to inaccuracies, as it may not consider current operational variables or changes in demand. Relying on external software programs can be useful, but they often require data input and might not provide the immediate clarity and accuracy that direct calculations offer. Therefore, calculating individual transformer loads directly yields the most reliable and straightforward method for determining the total load on an open wye-open delta bank.