StacksVerified U.S. regulatory reference

49 CFR §234.215

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
A standby source of power shall be provided with sufficient capacity to operate the warning system for a reasonable length of time during a period of primary power interruption. The designated capacity shall be specified on the plans required by § 234.201 of this part.