NFPA 110 Level 1 is the most stringent emergency power supply system class — required for life-safety branch loads in hospitals (Type 10: must accept rated load within 10 seconds), egress lighting in essential occupancies, and select mission-critical industrial process loads. Level 1 compliance is a system-level designation that touches genset selection, ATS spec (often delayed-transition with bypass-isolation), fuel storage capacity (96 hours typical), and an annual load-bank test regime.
17 models in this category.
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300 kW gaseous-fueled commercial standby generator. Kohler/Rehlko 300REZXC large industrial gaseous unit for major facilities, paralleling applications, and campus power. Note: the 300 kW Kohler gas genset is sold as the 300REZXC, not as 'KG300'.
400 kW gaseous-fueled commercial standby generator. Kohler/Rehlko 400REZXB — the flagship of Kohler's industrial gaseous lineup for large facilities and paralleling arrays. Note: the 400 kW Kohler gas genset is sold as the 400REZXB, not as 'KG400'.
100 kW gaseous-fueled commercial standby generator. Upper-mid-range industrial gaseous unit for larger commercial facilities on natural gas or propane.
60 kW gaseous-fueled commercial standby generator with Kohler 6.2L engine, EPA Subpart JJJJ certified for stationary emergency. Specs, service intervals, common failure modes, and compatible transfer switches.