When determining VA per linear foot for service calculations, what ratio is generally used?

In the context of service calculations for electrical systems, a standard ratio of 200 VA per linear foot is commonly utilized to estimate the load. This figure helps to provide a reasonable expectation of the electrical demand that will be placed on the system based on the linear footage of service conductors.

The 200 VA per linear foot ratio serves as a guideline to ensure that there is adequate capacity in the system for typical residential and commercial applications. It strikes a balance between efficiency and safety, reflecting a general consumption level that is found in various installations.

Using this standard helps electricians and engineers make informed decisions when planning electrical service installations, as it provides consistency and reliability in load estimation. The other ratios presented, while they may have relevance in specific situations or unique applications, are not the generally accepted standard for routine service calculations.