Service conductors are sized using which of the following?

The sizing of service conductors is primarily based on NEC Table 310.16, which provides the ampacity of conductors based on their insulation type, conductor material (copper or aluminum), the number of conductors, and the installation conditions such as whether they are in conduit or exposed to ambient temperature. This table is essential for determining the appropriate size of conductors to ensure they can safely carry the expected load without overheating, which is critical for the safety and efficiency of electrical installations.

Understanding the parameters in Table 310.16 allows for proper calculations that align with the overall design and electrical load requirements of a facility, ensuring that the conductors can handle the expected current without exceeding their rating. The other options, while related to grounding and bonding, do not specifically address the sizing of service conductors in the same direct manner.