1. ELECTRICAL DESIGN GUIDELINE STEPS Maria C. Gonzalez

2. ELECTRICAL DESIGN STEPS 1.What equipment do you want to install? 2. How do we install it? –Power requirements: conductor size –Communications requirements 3. Cost

3. ELECTRICAL EQUIPMENT

4. ELECTRICAL PLAN

5. POWER REQUIREMENTS STEPS: 1. Find the total load in Watts for the electrical equipment you want to install. 2. Calculate the current 3. Calculate the conductor size

6. POWER REQUIREMENTS CALCULATIONS: 1. Total Wattage 2. Calculate the current knowing the total wattage W:

7. CONDUCTOR SIZE Using Ohm’s Law, find R Resistance per unit length  km = voltage drop is 5% of 120V or 6 v D; distance in Km from PG&E pole to service cabinet

8. CONDUCTOR SIZE TABLE

9. ELECTRICAL ELEMENTS 1 POWER AND COST

10. ELECTRICAL ELEMENTS 1 Communications

11. ELECTRICAL ELEMENTS 2 POWER AND COST

12. ELECTRICAL ELEMENTS 2 Communications

13. ADDITIONAL ELECTRICAL ELEMENTS COST

14. COMMUNICATIONS APPLICATION BANDWITH REQUIREMENTS

15. COMMUNICATIONS TECHNOLOGY BANDWIDTH