# any DC system not subject to paragraph T.2.2.(a) · 3.40. Electric Vehicle Fueling Systems — How far off a US fuel pump, LPG meter or EV charger is allowed to be (NIST Handbook 44)

For any DC system not subject to paragraph T.2.2.(a) · 3.40. Electric Vehicle Fueling Systems, device or commodity is any DC system not subject to paragraph T.2.2.(a); acceptance tolerance (new or newly repaired device) is 1.0 %; maintenance tolerance (device already in service) is 2.0 %; handbook 44 section is 3.40. Electric Vehicle Fueling Systems; edition is 2026, verified against its source on 2026-08-20.

- **Device or commodity:** any DC system not subject to paragraph T.2.2.(a) _(verified: appears in the quote below)_
- **Acceptance tolerance (new or newly repaired device):** 1.0 % _(verified: appears in the quote below)_
- **Maintenance tolerance (device already in service):** 2.0 % _(verified: appears in the quote below)_
- **Handbook 44 section:** 3.40. Electric Vehicle Fueling Systems _(verified: appears in the quote below)_
- **Edition:** 2026 _(verified: appears in the quote below)_

## What the source says

> (b) For any DC system not subject to paragraph T.2.2.(a), tolerances are: (1) Acceptance Tolerance: 1.0 %; and (2) Maintenance Tolerance: 2.0 %.

## Source

- https://www.nist.gov/document/2026-nist-handbook-44-section-340

Last verified: 2026-08-20. Review by: 2027-08-20.
Part of [How far off a US fuel pump, LPG meter or EV charger is allowed to be (NIST Handbook 44)](https://referencesource.org/motor-fuel-dispenser-measurement-tolerances-nist/).