September 2021 Delivery Units Must be Used in Standby application as seen below. Failure to do so will void Cat warranty and End User/Reseller will be responsible for federal fines/penalty. EPA Stationary Tier 2 (500 hrs or less per year or the duration of the utility outage for emergency purposes only). New C7.1 200kw Tier 3 for EPA Stationary Emergency Use. Ul Listed package. Sound enclosed. Standard Cat factory warranty. Unit has dial down breaker and can be re-connected to 277/480V for an additional cost.