# MPE (maximum permissible exposure)

> The FCC's term for the enforceable exposure limit expressed as field strength or power density.

- Canonical URL: https://emfbase.com/glossary/mpe
- Collection: Glossary
- Record id: `glossary:mpe`
- Status: verified
- Last verified: 2026-08-12
- JSON: https://emfbase.com/api/glossary/mpe

## Key values

- **Category:** regulation

## Definition

Maximum permissible exposure is the FCC's limit on external field quantities — electric field strength, magnetic field strength or power density — that a person may be exposed to, averaged over 30 minutes for the general public and 6 minutes for occupational exposure. MPE values are frequency dependent and are derived from the underlying SAR-based restrictions.

## Sources

- `fcc-1310` U.S. Government Publishing Office (eCFR). *47 CFR § 1.1310 — Radiofrequency radiation exposure limits*. https://www.ecfr.gov/current/title-47/section-1.1310 — regulation, link checked 2026-08-12
- `fcc-oet65` Federal Communications Commission, Office of Engineering and Technology (1997). *OET Bulletin 65: Evaluating Compliance with FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic Fields*. https://www.fcc.gov/general/oet-bulletins-line — government, link checked 2026-08-12

Data licence: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Dataset version 2026.08.1. Retrieved from EMFBase, https://emfbase.com.

This record is reference data, not medical or legal advice. Regulatory limits, scientific guidelines and precautionary values are labelled separately and answer different questions.