FAQ

45
Revision/New
220.70
Energy Management Systems (EMS)
Change Summary
• New section classifies a single value equal to the
maximum ampere setpoint of the energy management
system shall be permitted to be used in load
calculations for the feeder or service.
Article 220 Branch-Circuit, Feeder, and Service
Load Calculations
220.70 Energy Management Systems (EMSs). If an energy
management system (EMS) is used to limit the current to a
feeder or service in accordance with 750.30, a single value
equal to the maximum ampere setpoint of the EMS shall be
permitted to be used in load calculations for the feeder
or service.
The setpoint value of the EMS shall be considered a
continuous load for the purposes of load calculations.
Expert Analysis
A new section has been added to address the load
calculations of energy management systems that
is used to limit the current to a feeder or service in
accordance with 750.30. When performing the load
calculations, a single value equal to the maximum
ampere setpoint of the energy management system
shall be permitted to be used in load calculations for
the feeder or service.
Leviton Solution
The first step when managing energy is to measure
it and start a baseline. From there you can continually
monitor energy usage to evaluate eectiveness of
energy saving measures that you have undertaken.
Organizations can monitor, control, and manage energy
Material taken from the National Electric Code
®
is reprinted with permission
from NFPA 70
®
, 2023 edition. National Electrical Code
®
, Copyright 2022,
National Fire Protection Association, Quincy, MA. All rights reserved.
NEC
®
Text
VerifEye
®
Submetering
Code Solution
continued on page 46