Ashrae 90.4 Pdf Jun 2026

: Provides a framework for using on-site or off-site renewable energy resources.

The ELC ensures that your power delivery path (from utility meter to the IT rack) does not waste excessive energy as heat. ashrae 90.4 pdf

Because IT load is variable and mission-critical, 90.4 sets allowances for mechanical and electrical losses rather than dictating a simple PUE (Power Usage Effectiveness) number. : Provides a framework for using on-site or

Measures the efficiency of the cooling and ventilation systems. Electrical Loss Component (ELC): ashrae 90.4 pdf

Choose your cooling strategy (DX, chilled water, economizers, liquid cooling). Calculate your proposed mechanical power draw at design conditions. If your – you comply.

: Measures power distribution losses from the utility feed down to the IT equipment using the Electrical Loss Component (ELC) Why It Matters