Is it required to have working space in the back or sides of assemblies like dead-front switchboards?

The requirement for having working space around assemblies like dead-front switchboards is primarily outlined in electrical codes and standards, which set safety and accessibility guidelines for installation and maintenance. In this context, the best answer is that working space is not required.

Dead-front switchboards are designed to be safe and accessible, allowing maintenance personnel to interact with the equipment without the need for additional space around it. The design mitigates risks by ensuring that the live components are not exposed, thus reducing the need for an extensive working area that is typically needed for other types of electrical assemblies or equipment where live parts may be accessed during maintenance.

Specific regulations can vary by jurisdiction, but the general understanding is that dead-front switchboards are meant to be fully enclosed and do not necessitate the same working clearances required for assemblies where live components are accessible. This design consideration contributes to a safer working environment and simplifies installation procedures since less physical space is mandated around them compared to other electrical installations.

In summary, it's important to understand that while some electrical installations have strict working space requirements, dead-front switchboards are constructed in a manner that minimizes the need for accessible working space, ensuring both safety and convenience.