1. HIGH DENSITY (ZERO LOT LINE) CONSTRUCTION
FOR NEW ELECTRICAL SERVICES
William Lane
CenterPoint Energy
2017 SWEDE Conference

2. Legal disclaimer
This presentation is being provided for informational purposes only and does not purport to be comprehensive. Neither CenterPoint Energy, Inc., together with its subsidiaries and affiliates (the “Company”), nor its employees or representatives, make any representation or warranty (express or implied) relating to this information. By reviewing this presentation, you agree that the Company will not have any liability related to this information or any omissions or misstatements contained herein. You are encouraged to perform your own independent evaluation and analysis.

3. ITEMS TO BE COVERED Distribution Vaults Niche Designs and Applications
Screening
Ventilation
Questions

4. Distrubution vaults
Fire rated room designed to be stand alone structure on customer’s property
Designed to be watertight with sump pit or drain for any fluid infiltration
6” curb integrated into vault room design to be SPCC compliant

5. Niche designs and applications
Mesh designs can be created to feed out to other service types like pad mounted transformers or single phase services
Ability to supply multiple secondary voltages to a single Customer i.e. 4160V, 480V, 240V & 208V
Allows for future expansion of service if requirements are met at the time service is required

6. SCREENING
Underground qualified services receive a pad mounted switch & pad mounted transformer as a standard service installation
There are a few factors that may cause a switch to non-standard vault service

7. SCREENING FACTORS FOR REQUESTING VAULT SERVICE: For aesthetic appeal
Building is constructed near or to the full extent of property line
To condense space required for services with multiple pieces of equipment

8. VENTILATION
Dedicated self-contained air handling unit(s) are supplied to provide conditioned air to the vault
The air condition (A/C) ventilation system is designed to maintain an ambient room temperature not to exceed 75 degrees Fahrenheit

9. VENTILATION
The A/C equipment is designed to remove a minimum BTU/HR produced by the electrical equipment when installed
The A/C duct system is a closed system, allowing no exchange of conditioned air or return air with any other ventilation system or building space

10. QUESTIONS?

11. William Lane