chris kennedy
Senior Member
- Location
- Miami Fla.
- Occupation
- 60 yr old tool twisting electrician
How can I convert the above?
Thanks
Thanks
How can I convert the above?
Thanks
You can't.How can I convert the above?
Thanks
The same way that you convert miles to miles per hour.How can I convert the above?
Thanks
Absolutely. That calculator is somewhat pointless, I'm not sure what an"'average" kW value is good for.You can't.
kWh is energy. Power times time.
kW is power.
If you know the duration over which the kWh was measured (in hours) you could divide by thos hours to get average kW. But note that it is average. If there are periods of lower power use, then there will be periods of higher than average power use.
Trying to get something through plans review using 220.87. Told customer to get me max demand for the last year and they sent my shop a years worth of POCO bills. Called building dept this morning saying all I had was the average but it was low enough that they will except it. That was a verbal, we'll see what happens when I actually submit this.
Just a note, the Building dept is very familiar with me and the structure in question.
As a side note, is the AHJ Miami-Dade Building and Zoning?
kWh is energy consumption, not power.Many utilities just measure power consumption in kWH without any kW component or the utility does not have smart meters yet..
me likey.The same way that you convert miles to miles per hour.
Many utilities just measure power consumption in kWH without any kW component or the utility does not have smart meters yet.
All you can do is following: High month XX,XXX kWH used in the month divided by 720 hours in the month or the actual days converted into hours for the meter read period. This is the utility conversion practice typical of southwest USA utilities.
There's the rub. You have to size a system based on the highest instantaneous power it will require, and merely the kWh in a month or year is not enough data - or should I say, it's not the right kind of data - on which to base a system design.That still only assumes the load was spread out over the time period. What if you had a month's worth of kWH but the bulk of the consumption was during only a few days? If you tried to size a supply system based on the average, it could be well under capacity of what is needed during those few days of heavy loading.
There's the rub. You have to size a system based on the highest instantaneous power it will require, and merely the kWh in a month or year is not enough data - or should I say, it's not the right kind of data - on which to base a system design.
Churches are a good example. Most of the time there is little to no load. One day a week for anywhere from 1 to maybe 6 hours the load increases dramatically, maybe even a second day or two the load increases but only for a few hours each time. Then comes the occasional big wedding, funeral, fundraising event, or similar where peak demand is maybe reached - but again for only a few hours. That is the time you don't want the service to fail because it couldn't handle the peak demand, though it was well oversized if you only considered average demand.
How can I convert the above?
Thanks