Mechanicals · definition
Required clear space in front of a panel (about 36 in. deep, 30 in. wide). Remodels can't bury or block a panel.
Source: OSHA — 1910.303 Electrical: General Requirements
Where this term lands on a Columbus budget
The cost pages carry the current local ranges, and the guides explain what moves them. A published range becomes a project number only after someone looks at the site.