How do you calculate enclosure scrap cost?

Multiply scrapped enclosures by cost per enclosure by the share of cost assigned to the issue, then add fixed adders. For 18 enclosures at $420 each at 100% plus $900 in adders, that is $7,560 variable plus $900 = $8,460 total, or $470 per enclosure.

What counts as the cost per enclosure?

The fully-burdened value at the point of scrap — raw blank, stamping, welding, powder coat, and any installed gaskets or hardware. Use $420 for a mid-size DC cabinet panel set; a bare wall-box stamping is much less.

Why include a disposition or freight adder?

Scrapped enclosures still cost money to handle: certified e-waste or metal disposal, expedited freight for replacement stock, and replacement-part premiums. The $900 adder in the example captures those one-time costs the per-part value misses.

What does the assigned share percentage mean?

It is the fraction of the scrap value you attribute to this specific root cause. Set it to 100% when the issue owns all the scrap; drop it below 100% when scrap is split across multiple causes and you only want this issue's portion.

What is a good enclosure scrap rate for charger manufacturing?

Best-in-class sheet-metal and coating lines run under 1–2% scrap. The calculator does not compute rate, but if your per-enclosure cost of $470 multiplied by monthly scrap counts is material to margin, the rate is too high.

Should rework cost go in this calculator?

No — this is for scrapped (unrecoverable) enclosures. If a defect is reworkable, model the rework labor and consumables separately; scrapping a $470 enclosure is the worst-case you are trying to avoid.

EV Charging Infrastructure Manufacturing calculator

Enclosure Scrap Cost Calculator

Enclosure Scrap Cost quantifies the money lost when charger enclosures — the powder-coated steel or aluminum pedestals, wall boxes, and DC cabinets — are scrapped for weld porosity, paint defects, gasket-channel dimensional misses, or NEMA seal failures. Quality engineers and operations managers at EV charger manufacturers use it to size the financial impact of a specific scrap issue and to justify corrective action on a stamping, welding, or coating line. It matters because enclosures are among the highest-value sheet-metal parts in a charger BOM, and a recurring scrap mode silently erodes margin while freight and disposition adders pile on top. The cost-per-enclosure output makes the case for a containment or rework decision concrete.

What this calculator does

Estimate the cost of scrapped charger enclosures, pedestals, doors, panels, or fabricated cabinets.
a quality engineer needs to quantify enclosure scrap from a charger build
It computes the total cost of a charger-enclosure scrap event — the assigned share of part value plus fixed disposition, replacement, and freight adders — and the cost per scrapped enclosure.

Formula used

Variable enclosure scrap cost = scrapped enclosures × cost per enclosure × assigned share
Total enclosure scrap cost = variable scrap cost + disposition/replacement adders

Inputs explained

Scrapped charger enclosures:
Cost per enclosure or enclosure set:
Scrap cost assigned to this issue:
Disposition, replacement, or freight adders:

How to use the result

Use it during a scrap or nonconformance review, an 8D corrective action, or when prioritizing which enclosure defect to attack first by dollar impact.
It captures direct part and logistics cost only; it omits the lost machine time, downstream line stoppage, and any tooling rework that the scrap mode may also be driving.

Current U.S. benchmarks

Global copper trades at $13,484 per tonne (IMF via FRED, May 2026), up 41.5% in a year, and U.S. industrial electricity averages 8.66 cents per kWh. Both feed electrified-hardware unit economics.

Common questions

How do you calculate enclosure scrap cost? Multiply scrapped enclosures by cost per enclosure by the share of cost assigned to the issue, then add fixed adders. For 18 enclosures at $420 each at 100% plus $900 in adders, that is $7,560 variable plus $900 = $8,460 total, or $470 per enclosure.
What counts as the cost per enclosure? The fully-burdened value at the point of scrap — raw blank, stamping, welding, powder coat, and any installed gaskets or hardware. Use $420 for a mid-size DC cabinet panel set; a bare wall-box stamping is much less.
Why include a disposition or freight adder? Scrapped enclosures still cost money to handle: certified e-waste or metal disposal, expedited freight for replacement stock, and replacement-part premiums. The $900 adder in the example captures those one-time costs the per-part value misses.
What does the assigned share percentage mean? It is the fraction of the scrap value you attribute to this specific root cause. Set it to 100% when the issue owns all the scrap; drop it below 100% when scrap is split across multiple causes and you only want this issue's portion.
What is a good enclosure scrap rate for charger manufacturing? Best-in-class sheet-metal and coating lines run under 1–2% scrap. The calculator does not compute rate, but if your per-enclosure cost of $470 multiplied by monthly scrap counts is material to margin, the rate is too high.

Last reviewed 2026-05-12.