California California Load Calculation Worksheet for Contractors 2025

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  1. Click ‘Get Form’ to open the California Load Calculation Worksheet in our editor.
  2. Begin by entering the Contractor/Owner name and Job Address at the top of the form. This information is essential for identifying the project.
  3. In the 'Load Calculation' section, calculate the total square footage and input it in the designated field. This will help determine the overall load requirements.
  4. Proceed to list all electrical appliances and their respective wattages. For example, calculate air conditioning loads by multiplying amps by voltage (e.g., 25A x 240V).
  5. For heat pumps, ensure you account for auxiliary heat loads correctly. Use 65% of the auxiliary heat strip load when calculating total heat pump load.
  6. Complete any additional fields for other appliances like water heaters, dishwashers, and dryers, ensuring you use their nameplate ratings (N.P.R.) where applicable.
  7. Finally, sum up all calculated loads to find your Total Service Load and divide by 240V to determine Amps required for service size.

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Using the Tire Load Index Chart In other words, its the amount of weight your tire can support safely. For example, if a tire has a load index of 92, it can support 1,389 pounds at maximum air pressure. Multiply that by four tires (4 x 1,389 = 5,556 pounds) to get your cars maximum load carrying capacity.
Here is one: Start by adding the wattage of all lighting branch circuits. Add in the wattage rating of all plug-in outlets. Add in the wattage of all permanent appliances, such as washer/dryer, electric range, or water heaters. Subtract 10,000 multiply this number by . Add 10,000.
The way to figure this out is to multiply each score by its weight (percentage) and add the products together, then divide by the sum of the weights. These scores are the students weighted average. In a single set of test scores, each score, or quantity, is equally valuable.
Section 220.87 of the California Electrical Code requires that prior to modifying or adding to electrical systems, their existing loads must be determined. The code requires 30 days of data monitoring, but in buildings with stable loads, the Campus Electrical Engineer may reduce this requirement to 7 days.
You can use the load calculation formula, Power (W) = Voltage (V) Current (A). It will convert the information to watts. Determining Load Types: Electrical loads can differ based on their characteristics.