# Building Biology SBM-2024 AC electric field bands

> Sleeping-area grades with ground reference: below 1 V/m no anomaly, 1–5 weak, 5–50 strong, above 50 V/m extreme; body voltage below 10 mV is 'no anomaly'.

- Canonical URL: https://emfbase.com/limits/building-biology-ac-electric-bands
- Collection: Exposure limits
- Record id: `limits:sbm-2024-electric-bands`
- Status: verified
- Last verified: 2026-08-12
- JSON: https://emfbase.com/api/limits/building-biology-ac-electric-bands

## Key values

- **Limit value:** 1–50 V/m — Precautionary value — not law anywhere — Body voltage bands with ground reference: <10 / 10–100 / 100–1000 / >1000 mV. Field strength without ground reference: <0.3 / 0.3–1.5 / 1.5–10 / >10 V/m. [sbm-2024]
- **Quantity:** electric field strength
- **Frequency band:** power frequency and harmonics
- **Population:** sensitive
- **Set by:** Building Biology SBM-2024 evaluation guidelines (2024)
- **Kind:** Precautionary — not law anywhere

## Sources

- `sbm-2024` Institut für Baubiologie + Nachhaltigkeit (IBN) (2024). *Building Biology Evaluation Guidelines for Sleeping Areas (SBM-2024)*. https://buildingbiology.com/site/downloads/SBM-2024_EVALUATION_GUIDELINES_EN.pdf — ngo, 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.