What do you check before sizing service conductors?

Before sizing service conductors, checking the available short-circuit current is essential because it helps to ensure that the conductors can handle potential fault conditions without being damaged. Evaluating the available short-circuit current allows one to assess the maximum current that could flow during a fault scenario. This information is critical in selecting conductors that not only have adequate capacity to carry regular loads but also possess the necessary strength and safety margins to withstand sudden surges in current during short-circuit conditions.

While other factors such as voltage level, load diversity, and equipment ratings are important considerations in the overall electrical system design, they do not specifically address the immediate concerns related to fault conditions and the protection of conductors. Thus, understanding the potential short-circuit current directly impacts the conductor sizing process and ensures compliance with safety regulations.