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Electrical Engineering · Fire Safety · Building Systems

Fire Alarm System SLD for Multi-Story Office Building

Type Single-line diagramStandard IEEE Std 315 + ANSI device numberingEngine schematex-sldUpdated 6/6/2026
Fire Alarm System SLD for Multi-Story Office Building
Drawing preview
The scenario

Design of a single-line diagram for the power supply to a fire alarm system in a multi-story office building, including a sprinkler pump and smoke exhaust fan for life safety.

What is in this drawing

Read the decisions behind it.

01

Inclusion of a standby generator with automatic transfer switch to meet emergency power requirements for fire protection equipment.

02

Dedicated circuit breakers for the fire alarm panel, sprinkler pump, and smoke exhaust fan to ensure selective coordination.

03

Use of motor loads for the pump and fan to accurately represent real-world equipment characteristics.

Applicable when designing the electrical distribution for fire protection systems in commercial buildings, ensuring compliance with NFPA 70 (NEC) and NFPA 72 standards for emergency power, selective coordination, and life safety loads.

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