First, why do you care? Kilowatts per hour are minimum and of little consequence.
Second, how can a person of some education, such as you,
purchase a system without the specs?
Third, if this is a new home area the settings are to your betterment.
Sorry to be so cruel, however, how the heck did you buy or inherit a system you have no knowledge of. Most homes with an irrigation system have a price tag that requires us to use both our brains and common sense. If you bought the system and have no paperwork shame on you!
Chill my friend, go to the control box of the irrrigation system. It will be near the water supply to your home. On it will be a user manual. If it is not there open the box and inside will be instructions or the manual to the system. If neither is available contact the Realtor and the local rep of the company whose name appears on the control box (Rainbird, Ortho, etc.).
Once you have the company that installed the system get the manual and instructions. In addition ask about a service plan. This plan should include adjustments to the sprinkler heads (as needed), repair to heads (as needed), the purge/drain of the system in fall, and reactivation for spring. Also check if your system can facilitate the addition of a rain guage to the computer.
Your turf and shrubs, when properly watered, require an inch per week. Overwatering is as bad as a drought! They will probably charge you from $50-100 for this add-on. Protest enough and get it free or half. It will measure the combination of the rain and the irrigations and shut-down the sprinkler system at the one inch level. Saves you money in the long run and stops the neighbors from asking why are you watering your lawn when it is raining!
Your box will use the KW of a 15w bulb. Total cost about three dollars a year max. Use the box and the system to save you money, your community water, and your plants. Overwatered turf and plants are targets for pest, insects, and disease. Good Luck.How can I determine how many kilowatt hours a sprinkler control box uses if I have no paperwork for specs?
if u know the wattage of the box u would multiply that times the # of hours you intend to use the sprinkler system (in a day) then divide by 1000. That is the # of kwh it will use/day. You could then take it a step further and multiply the kwh and your current electric rate to find how much it will cost you per day. (I work for an electric company and have to explain this often)
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