For most companies, depreciation is about how much wear and tear was put on your equipment - and how much it decreased in value.
LMN's equipment budget calculators (found on both the Equipment and the Overhead budgets) calculate the average amount of annual depreciation for your trucks and equipment and therefore you shouldn't include your accountant's depreciation in your overhead budget.
Depreciation is already built in to your equipment budget, your overhead budget, and your equipment cost calculators (both hourly and daily rates).
Example: Depreciation In Your Equipment Budget
Example: Depreciation In Your Overhead Budget