What potential issue can arise from not accounting for future expansions in load calculations?

When future expansions are not considered in load calculations, the primary concern is that the electrical system may not have adequate capacity to support increased demand. This can result in insufficient capacity, which may lead to safety hazards such as overheating, tripping of breakers, or even catastrophic failures. Without considering potential growth, the system might be pushed beyond its limits during peak usage times, creating risks for equipment and safety. Additionally, service interruptions may occur because the infrastructure cannot handle the unexpected load, impacting operations and reliability.

While the other choices address different possible scenarios, they do not encapsulate the critical nature of load calculations in relation to safety and operational readiness. Understanding the implications of inadequate capacity is essential in planning for future electrical system demands.