What is needed for service load calculations as per NEC Article 230?

For service load calculations as per NEC Article 230, recalculation is necessary for all loads in order to ensure that the service capacity is properly assessed and meets the current requirements. This thorough approach includes not only evaluating new loads but also taking into account existing loads.

By recalculating all loads, it allows for an accurate determination of the total demand that may be placed on the service. This is crucial because the electrical system should be designed to safely handle all potential loads that could be encountered, including those that are already in use, to prevent overloading and ensure compliance with safety standards.

Neglecting to recalculate existing loads could lead to underestimating the necessary service capacity, which poses safety risks, and might not meet the NEC requirements. Thus, a comprehensive review of all loads ensures that the service is adequately supplied and functions effectively.