Civil Engineering Reference
In-Depth Information
CHAPTER 31
Electrical Design Considerations
INTRODUCTION
Electrical service is an integral part of all water facilities and must be planned as the
water system is developed. This chapter provides general information on electrical
design considerations that will be useful when planning or designing water facilities.
ELECTRICAL PLANNING
Planning for effective and efficient electrical systems involves a team effort among
planning, design, operation, and maintenance staff, and the serving electric utility. It
is important for water system planning and design staff to understand basic electrical
considerations, including needs and impacts. Electrical impacts must be recognized
early and incorporated into the planning stage.
Some of the important impacts are:
Loads and resultant voltage level
•
Serving electric utility and available electrical service
•
Auxiliary power systems
•
Support systems, which include telephone, fire alarm, security, etc.
•
Site layout
•
Major electrical equipment and space
•
Hazardous and corrosive areas
•
LOADS AND VOLTAGE LEVEL
The first major step in electrical planning is to estimate the loads requiring electricity
and then determine optimum voltage level(s). Loads usually consist of the following
major components for most facilities:
Motors for pumps and other process-related equipment
•
Lighting
•
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