Can I run critical medical equipment on battery backup?

Understanding Critical Loads and Battery Backup

Critical loads such as medical equipment require a stable and reliable power supply. In a whole-home battery backup system, it’s essential to prioritize these loads and ensure they are supplied with power from the battery bank during outages. When selecting a battery system, consider the power requirements of your critical loads and choose a system that can meet those needs. For example, a Powerwall with an Enphase EG4 inverter can provide a high level of reliability and power quality.

Prioritizing Medical Equipment on Battery Backup

To prioritize medical equipment, you can use a system’s automatic transfer switch (ATS) to switch to battery power during an outage. This ensures that critical loads receive power from the battery bank. For example, the Enphase EG4 inverter can be programmed to switch to battery power for critical loads within 2-4 cycles (2-4 milliseconds) of an outage. Additionally, you can use a system’s load shedding feature to reduce non-essential loads and allocate more power to critical loads.

Sizing and Configuration for Critical Loads

When sizing and configuring your battery system for critical loads, consider the following factors: the maximum power requirements of the medical equipment, the duration of the outage, and the system’s capacity to charge the battery bank. For example, if a medical device requires 1000W of power and the system can provide 5000W of power, you can size the battery bank to provide 10-20 hours of backup power. It’s also essential to configure the system to prioritize critical loads and ensure that they receive power during outages.