Exhibit E- Electrical Calculations

FermiForward

Utilities Infrastructure Project (UIP) - Subproject 1
New Chilled Water (CHW) Plant & Central Utility Building (CUB) Upgrades Issue for Bid (IFB) - Electrical Calculations
Project No.: 3-5-206B
Issue 1 | August 27, 2026

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This report takes into account the particular instructions and requirements of our client. It is not intended for and should not be relied upon by any third party and no responsibility is undertaken to any third party.
Job number 288168-03
Arup US, Inc.

35 East Wacker Drive, Suite 1800

Chicago, IL 60601
USA
arup.com

1.

Introduction

2.

Design Criteria

2.1
2.2

Codes and Standards
Analysis and Design Software

3.

Calculations

3.1

Load Analysis

3.2

Preliminary Fault Current Calculation

3.3

Preliminary Arc Flash Analysis

3.4

Voltage Drop Calculation

Appendices
Appendix A
Load Analysis
A.1
Equipment Load Analysis

A-1
A-1
A-2

A.2

Load Analysis by Category

A-3

A.3

Existing Generator Load Calculation

A-4

Appendix B
Preliminary Fault Current Analysis
B.1
Preliminary Fault Current Analysis

B-1
B-1
B-2

Appendix C
Preliminary Arc Flash Analysis
C.1
Preliminary Arc Flash Analysis

C-1
C-1
C-2

Appendix D
Voltage Drop Calculation
D.1
Voltage Drop Calculation

D-1
D-1
D-2

Issue 1 | August 27, 2026 | Arup US, Inc.

1.

Introduction

This calculation package describes preliminary electrical design calculations which were used for the basis of the electrical design documents for the Fermi Utility Infrastructure Project Central Utility Building (CUB) renovation and expansion. The calculations presented herein are based on the latest design drawings and loading assumptions described within, and are subject to revision in future design phases.

2.

Design Criteria

2.1

Codes and Standards

The following lists supplemental electrical codes and standards applicable to the project which are considered within this calculation package.
•

2020 NFPA 70, National Electrical Code (NEC)

•

Fermilab’s ES&H Manual (FESHM), including:
−

•

Chapter 9000 – Electrical Safety

Fermilab FESS Design Guide, latest edition

2.2

Analysis and Design Software

The following programs were used in the analysis and preparation of this calculation package: •

ETAP 22.5.0

•

Internal Design Software (ArupCompute)

•

Microsoft Excel

3.

Calculations

Electrical calculations presented in this report include a load analysis at the main switchgear, a generator load analysis, a preliminary fault current calculation, and a preliminary arc flash analysis. The goal of these calculations