What is the size of the 3-pole OCPD protecting Wendy's Panel B?

To determine the proper sizing of the 3-pole Overcurrent Protection Device (OCPD) protecting Wendy's Panel B, one must consider several factors that impact the electrical load and the applicable code requirements.

The appropriate OCPD size is typically dictated by the total calculated load that the panel will need to support. This is primarily influenced by the connected circuits, the type of equipment, and the expected usage patterns. Generally, OCPD ratings are based on the demand load, which requires a careful calculation adhering to the National Electrical Code (NEC) standards.

If the choice of 150 amps is justified based on the load calculations, it indicates that the expected demand on the panel is sufficiently high, warranting a protection device with that capacity. This means the total expected load does not exceed 150 amps, allowing sufficient headroom without risking overload, which is crucial for ensuring safety and compliance.

Considering safeties, such as maintaining operational efficiency while preventing overheating or equipment damage, selecting an OCPD size that matches or exceeds the panel's demand while adhering to code specifications is essential.

This selection process underscores the importance of thorough calculation and compliance to ensure not only the operability of electrical systems but also the safety of the installations