Can safety-related design concepts be implemented after an electrical system has been installed?

The correct understanding is that safety-related design concepts should ideally be integrated into an electrical system during the initial design and installation phases. While it is technically possible to implement safety-related changes after the installation of an electrical system, doing so can be challenging and may not fully address all safety concerns.

The principle behind this is that safety features are most effective when they are considered from the outset. Retrofitting safety measures later may not only be more costly but can also lead to complications in compliance with the latest safety standards and regulations. Proper planning ensures that safety-related designs are an integral part of the system, allowing for a more comprehensive approach to safety rather than patching on additional measures post-installation.

This aligns with the best practices outlined in NFPA 70E, which emphasizes the importance of designing electrical systems with inherent safety features in their original construction to effectively minimize risks and hazards associated with electrical work.