EV Charging Infrastructure Manufacturing worked example

Charger Cabinet Assembly Time at 8.64% assembly support allowance: a worked example

This worked example runs the charger cabinet assembly time numbers for a tougher week than the baseline: 8.64% assembly support allowance instead of the typical 12%. Estimate labor hours to assemble EV charger cabinets from cabinet count, assembly rate, and normal production allowance.

The inputs for this scenario

  • Charger cabinets to assemble: 32 cabinets (held at the documented default)
  • Cabinet assembly rate: 4 cabinets / hr (held at the documented default)
  • Assembly support allowance: 8.64 % (the input this scenario stresses; the baseline uses 12)

Working through the calculation

  • The calculation starts from the formula this tool documents: Base cabinet assembly hours = charger cabinets to assemble รท cabinet assembly rate.
  • Required charger cabinet assembly hours works out to 8.69 hr at these inputs, and this is the headline figure for the scenario.
  • Base cabinet assembly hours works out to 8 hr at these inputs.
  • Assembly support allowance works out to 8.64 % at these inputs.
  • Cabinet assembly rate works out to 4 cabinets / hr at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where assembly support allowance sits at 12% and the headline result is 8.96 hr, this scenario comes in 3% below the baseline at 8.69 hr.
  • Use it when scheduling an EVSE build run, sizing the assembly crew, or quoting a delivery date for a batch of charger cabinets. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Required charger cabinet assembly hours: 8.69 hr (headline result)
  • Base cabinet assembly hours: 8 hr
  • Assembly support allowance: 8.64 %
  • Cabinet assembly rate: 4 cabinets / hr

Run it with your numbers

  • To rerun this with your own numbers, open the live Charger Cabinet Assembly Time calculator, set assembly support allowance to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.