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Joined: Oct 2009
Posts: 167 Likes: 2
Lunker
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Lunker
Joined: Oct 2009
Posts: 167 Likes: 2 |
ok so i get around 22 dollars a month with those numbers...but not sure that is an exact number though...ive seen a lot of different 1/2 hp pumps for sale online and not all have the same amperage draw which should be an important factor in the equation...although id have to say its close enough...but after the first month of running i saw about 35 dollar increase
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Joined: Jun 2005
Posts: 2,365
Lunker
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Lunker
Joined: Jun 2005
Posts: 2,365 |
If you're in a dangerous drought, it's very beneficial if you can just add a few thousand gallons a day. It can easily make the difference in crashing or not. 2-3 GPM can easily save your fish if it has decent DO.
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Joined: Jan 2009
Posts: 28,642 Likes: 877
Moderator Ambassador Field Correspondent Lunker
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Moderator Ambassador Field Correspondent Lunker
Joined: Jan 2009
Posts: 28,642 Likes: 877 |
O.K. 1,000 watts in a kwh. One hp motor draws 746 watts per hour. Can you take it from here? Is that supposed to be funny? One hp - $1.97/day running 24 hr straight Yep. If you couldn't do the math, look at the last line. That's based on using your KWH costs. I hava a buddy that has a hard time counting to 10 by using his fingers (and thumbs) but he's a mechanical genius, and I have another buddy who is a genius (by IQ rating) that can't figure out what end of a screwdriver to hold.
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Joined: Dec 2009
Posts: 6,692
Hall of Fame 2015 Lunker
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Hall of Fame 2015 Lunker
Joined: Dec 2009
Posts: 6,692 |
One hp motor draws 746 watts per hour. That is incorrect! That would be a 100% efficient motor, and NO SUCH animal exists! Motors are rated for output HP, so if a motor nameplate says 1 HP, that is OUTPUT, not INPUT. You could easily draw 1500 watts to get an output of 746 watts. It depends on the motor efficiency, load, service factor... The best way to estimate your operating cost is to take FLA (full load amps) and multiply it by operating voltage, then you get watts. Amps x Volts = Watts For example, I looked up a Baldor 1HP single phase motor. It operated at 115 volt, 13 amps. (starting current was 37 Amps, but only for a short time) 13 amps x 115 volts = 1,495 watts (divide by 1000 to get KW) 1.495 kwh x 24 hours = 35.88 kwh/day x $0.11 = $3.95/day x 30 days = 118.50 for 30 days. This is just a way to estimate electric cost. Other factors play a role in actual cost. I can easily believe a 5 or 7.5 hp motor would run 300 bucks a month, and the 1/2 hp motor at 35-40 per month. The best way to know what electricity costs for an existing motor is to measure the amps and volts in actual operating conditions. Then you can find out how efficient you are and see if you can take steps to increase efficiency. Three phase motors are quite a bit more efficient than single phase motors. There are a number of Variable Frequency and Inverter Drives that will operate three phase motors on single phase power.
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Joined: Jan 2009
Posts: 28,642 Likes: 877
Moderator Ambassador Field Correspondent Lunker
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Moderator Ambassador Field Correspondent Lunker
Joined: Jan 2009
Posts: 28,642 Likes: 877 |
Here it's a new year and I'm learning things already. Thanks JKB.
JKB, I tried looking on the F&W website for specs and couldn't find the info. Specifically, I was looking at a 2 hp, single phase submersible well pump, for a 4" casing. Model 4F85A20. I was hoping to find out the power consumption both on start up and on continous run. The pump would be at 60' depth, but the water level in the casing is 15' below the ground surface. I'd be pushing the water horizontally 200' thru a 4" I.D. plastic pipe once the water was pumped to the surface. Any ideas on the power consumption?
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Joined: Dec 2009
Posts: 6,692
Hall of Fame 2015 Lunker
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Hall of Fame 2015 Lunker
Joined: Dec 2009
Posts: 6,692 |
esshup, I could not find any specs on the pump you mentioned. The only thing I found were some spare parts. It is an obsoleted model. Without the performance specs., it would be difficult to get close to the actual power consumption. I thought about comparing it to a current pump, but that may not be viable due to the fact that newer motors/pumps are more energy efficient than older models. In my opinion, every tool box should have something like this: Clamp Meter You can measure Amps and Volts... They are a very handy. I have an Amprobe, and would be lost without it.
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Joined: Jan 2009
Posts: 28,642 Likes: 877
Moderator Ambassador Field Correspondent Lunker
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Moderator Ambassador Field Correspondent Lunker
Joined: Jan 2009
Posts: 28,642 Likes: 877 |
JKB: Thanks. The pump isn't installed yet, I was just doing some thinking and planning for the upcoming year. I took that information right from the F&W website. Specs I was looking at the first 2 hp pump. I guess the best way to get the information would be to talk to the local well driller who installed the current well. Hopefully he'll know what pumps are currently available and the specs on them.
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Joined: Dec 2009
Posts: 6,692
Hall of Fame 2015 Lunker
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Hall of Fame 2015 Lunker
Joined: Dec 2009
Posts: 6,692 |
Every time I searched for that pump, I could not find anything. I also did a search on the F&W website and it said no matches were found. The information you listed is only a fraction of what is needed. Maybe you could call them and talk to engineering and get the info. I find that talking to engineering is better than talking to customer service, go figure I need to start searching for a well pump myself. The wells in our area are generally 180 feet deep.
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Joined: Dec 2009
Posts: 6,692
Hall of Fame 2015 Lunker
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Hall of Fame 2015 Lunker
Joined: Dec 2009
Posts: 6,692 |
esshup,
I looked up a few 2HP pumps and they are all about the same as far as amps go.
Average for a 230Volt motor is: FLA = 9.9, Service factor amps = 12.2 and start up amps = 49.4.
You could expect to operate at 2.28 KW. That is if you were drawing FLA all the time.
Estimate about 6 bucks per day at 0.11/kwh to be close.
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Joined: Dec 2009
Posts: 6,692
Hall of Fame 2015 Lunker
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Hall of Fame 2015 Lunker
Joined: Dec 2009
Posts: 6,692 |
Here are some 3 phase pumps/controllers that operate from 230V single phase. Goulds Pumps 2HP FLA is only 6.5 amps -vs- 9.9 for single phase. Thought you might be interested.
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Joined: Jan 2009
Posts: 28,642 Likes: 877
Moderator Ambassador Field Correspondent Lunker
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Moderator Ambassador Field Correspondent Lunker
Joined: Jan 2009
Posts: 28,642 Likes: 877 |
Heck yeah! Thanks.
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Joined: Dec 2009
Posts: 6,692
Hall of Fame 2015 Lunker
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Hall of Fame 2015 Lunker
Joined: Dec 2009
Posts: 6,692 |
Here is some info on the CentriPro Controller CentriPro Pretty neat unit. Even has a pond filling mode.
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Joined: Aug 2002
Posts: 20,043 Likes: 1
Hall of Fame Lunker
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Hall of Fame Lunker
Joined: Aug 2002
Posts: 20,043 Likes: 1 |
O.K. 1,000 watts in a kwh. One hp motor draws 746 watts per hour. Can you take it from here? Is that supposed to be funny? One hp - $1.97/day running 24 hr straight Yep. If you couldn't do the math, look at the last line. That's based on using your KWH costs. I hava a buddy that has a hard time counting to 10 by using his fingers (and thumbs) but he's a mechanical genius, and I have another buddy who is a genius (by IQ rating) that can't figure out what end of a screwdriver to hold. Scot, I'm really flattered that you would call me a genius but you really didn't have to tell them about the screwdriver thing. Just kidding of course. I could only dream to have a high I.Q. other than that Internet test. For what it's worth when I pumped 45 gpms 24/7 into the trout pond it cost me about $100.00 per month. I sold some of the trout for that much so it wasn't a problem financially. I was really surprised that I could drop my .62 acre pond this fall an inch a day with a sump pump in a bucket rated at 70 gpm zero head. I needed to drop it a couple of feet for seining.
Last edited by Cecil Baird1; 01/03/11 06:28 PM.
If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.
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Joined: Apr 2010
Posts: 529
Fingerling
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Fingerling
Joined: Apr 2010
Posts: 529 |
O.K. 1,000 watts in a kwh. One hp motor draws 746 watts per hour. Can you take it from here? Is that supposed to be funny? One hp - $1.97/day running 24 hr straight Yep. If you couldn't do the math, look at the last line. That's based on using your KWH costs. I hava a buddy that has a hard time counting to 10 by using his fingers (and thumbs) but he's a mechanical genius, and I have another buddy who is a genius (by IQ rating) that can't figure out what end of a screwdriver to hold. Hava? Okay, now I see.
Last edited by Sniper; 01/03/11 07:41 PM.
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Joined: Nov 2006
Posts: 359
Lunker
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Lunker
Joined: Nov 2006
Posts: 359 |
Just a comment..IMHO, this is another example of why Pond Boss is such a great site. JKB is obviously very knowledgeable on present topic & shares his knowledge to help forum members fix their problems. See this all the time here & just wanted to say thanks...du
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Joined: Jul 2009
Posts: 3,505 Likes: 3
Ambassador Field Correspondent Hall of Fame Lunker
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Ambassador Field Correspondent Hall of Fame Lunker
Joined: Jul 2009
Posts: 3,505 Likes: 3 |
O.K. 1,000 watts in a kwh. One hp motor draws 746 watts per hour. Can you take it from here? Is that supposed to be funny? One hp - $1.97/day running 24 hr straight I'd have thought it was funny except that I'm so damned dysfunctional when it comes to math that even reading Scott's faint gray text at the bottom still doesn't help me! Sniper, just remember that we have a lot of fun here besides sharing great info, and Scott is one of those guys who always has great info to share. He was definitely just having a little fun with his post and certainly was not being sarcastic or anything.
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Joined: Apr 2010
Posts: 529
Fingerling
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Fingerling
Joined: Apr 2010
Posts: 529 |
O.K. 1,000 watts in a kwh. One hp motor draws 746 watts per hour. Can you take it from here? Is that supposed to be funny? One hp - $1.97/day running 24 hr straight I'd have thought it was funny except that I'm so damned dysfunctional when it comes to math that even reading Scott's faint gray text at the bottom still doesn't help me! Sniper, just remember that we have a lot of fun here besides sharing great info, and Scott is one of those guys who always has great info to share. He was definitely just having a little fun with his post and certainly was not being sarcastic or anything. Todd, I think we will just have to agree to disagree. Not only was he sarcastic, but his answer was wrong. Seems to me the focus should be on correct answers, and not being flippant with someone you don't know. (:>)
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Joined: Jul 2009
Posts: 3,505 Likes: 3
Ambassador Field Correspondent Hall of Fame Lunker
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Ambassador Field Correspondent Hall of Fame Lunker
Joined: Jul 2009
Posts: 3,505 Likes: 3 |
No harm in agreeing to disagree. Just remember that the little smiley icons are for a reason - in this case, Scott used a grin face to try to communicate that he was just teasing. Wrong answer or not, this is generally a very friendly and fun loving place. Sometimes the best planned thoughts and comments lose a bit in this sort of medium - unless you are a wordsmith for a living, it can sometimes be tough to fully communicate the point you wanted to make. Scott is a good guy and a solid guy. Just some food for thought!
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Joined: Jan 2009
Posts: 28,642 Likes: 877
Moderator Ambassador Field Correspondent Lunker
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Moderator Ambassador Field Correspondent Lunker
Joined: Jan 2009
Posts: 28,642 Likes: 877 |
Todd,
I think we will just have to agree to disagree. Not only was he sarcastic, but his answer was wrong. Seems to me the focus should be on correct answers, and not being flippant with someone you don't know. (:>)
Sniper, I apologise if you thought that the answer was flilppant or sarcastic, it wasn't meant to be. I truly thought I was giving you the correct answer, but JKB's post corrected me. I learned something that day and I hope you were able to use the information that he gave to answer your question as well.
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Joined: Aug 2007
Posts: 3,135
Ambassador Lunker
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Ambassador Lunker
Joined: Aug 2007
Posts: 3,135 |
No harm in agreeing to disagree. Just remember that the little smiley icons are for a reason - in this case, Scott used a grin face to try to communicate that he was just teasing. Wrong answer or not, this is generally a very friendly and fun loving place. Sometimes the best planned thoughts and comments lose a bit in this sort of medium - unless you are a wordsmith for a living, it can sometimes be tough to fully communicate the point you wanted to make. Scott is a good guy and a solid guy. Just some food for thought! Ya know, you would make a good lawyer.
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Joined: Jul 2009
Posts: 3,505 Likes: 3
Ambassador Field Correspondent Hall of Fame Lunker
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Ambassador Field Correspondent Hall of Fame Lunker
Joined: Jul 2009
Posts: 3,505 Likes: 3 |
Why, thank you! I just need to find an office with a shark's head hanging over the front door and I'll be all set . . .!!!
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Joined: Oct 2005
Posts: 6,934 Likes: 2
Ambassador Field Correspondent Lunker
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Ambassador Field Correspondent Lunker
Joined: Oct 2005
Posts: 6,934 Likes: 2 |
Dewey, Cheatham, and Howe
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Joined: Dec 2009
Posts: 6,692
Hall of Fame 2015 Lunker
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Hall of Fame 2015 Lunker
Joined: Dec 2009
Posts: 6,692 |
Dewey, Cheatham, and Howe Hey, I know them!!!
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Joined: Jul 2009
Posts: 3,505 Likes: 3
Ambassador Field Correspondent Hall of Fame Lunker
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Ambassador Field Correspondent Hall of Fame Lunker
Joined: Jul 2009
Posts: 3,505 Likes: 3 |
Dewey, Cheatham, and Howe Hey, I know them!!! Me, too. They turned me down for a summer clerkship during law school and, as a result, I've been on the straight and narrow ever since!
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Joined: Jan 2006
Posts: 16,081 Likes: 281
Moderator Lunker
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Moderator Lunker
Joined: Jan 2006
Posts: 16,081 Likes: 281 |
Straight and narrow? Must be tough.
It's not about the fish. It's about the pond. Take care of the pond and the fish will be fine. PB subscriber since before it was in color.
Without a sense of urgency, Nothing ever gets done.
Boy, if I say "sic em", you'd better look for something to bite. Sam Shelley Rancher and Farmer Muleshoe Texas 1892-1985 RIP
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Moderated by Bill Cody, Bruce Condello, catmandoo, Chris Steelman, Dave Davidson1, esshup, ewest, FireIsHot, Omaha, Sunil, teehjaeh57
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