Results 1 to 8 of 8
  1. #1
    Platinum Member
    Join Date
    Feb 2008
    Posts
    719
    Location
    Ontario Canada
    Tractor
    Kubota R510, JD 6200, JD 770, Cushman 6150, Steiner 430 Diesel Max, Steiner 430 Max w Kubota Gas, Kawasaki Diesel Mule

    Default Another Tip, How to Reduce your Load for a genset

    Here is another tip I got from my Rocket Science Friend.

    I switched my 220/240 volt electric water heater to run on 110Volts.

    This does several things:

    It cuts the wattage in half (I believe) and frees up genset capacity for other things. The 110 operation vs 220 is not an issue for load balancing with the transfromer that I use in my genset/transfer switch arrangement.

    The elements watts/square cm is halved (I believe) reducing significantly the buildup of deposits on your elements thus increasing their efficiency (on a new heater).

    I WAS SKEPTICAL! Thought I would have only WARM (or cold) water (and I love HOT showers!). I also wash laundry in warm water.

    This was not the case! I have noticed absolutely no difference! I should add, that I live alone, except for weekends when I have a friend stay with me. She does her laundry here every weekend.

    So maybe for a typical family, this would not work. Maybe one could put in a switch, and when in an emergency situation, go to this mode.

    Just thought it might be of interest to some.

  2. #2
    Platinum Member Heywood Jannockitov's Avatar
    Join Date
    Jan 2008
    Posts
    807
    Location
    Near Schomberg, Ontario Canada, the equestrian center of the universe
    Tractor
    2008 John Deere 5425 cab, 1986 Case 580 Super E, 1973 IH454

    Default Re: Another Tip, How to Reduce your Load for a genset

    I switched our 220/240 volt electric water heater to run on propane. Now the generator only has to run a small blower fan on the water heater (same for the propane furnace). Saves even more electricity!
    Definition of "Horse": A 4 legged mammal looking for an inconvenient place and expensive way to die.

  3. #3
    Platinum Member
    Join Date
    Feb 2008
    Posts
    719
    Location
    Ontario Canada
    Tractor
    Kubota R510, JD 6200, JD 770, Cushman 6150, Steiner 430 Diesel Max, Steiner 430 Max w Kubota Gas, Kawasaki Diesel Mule

    Default Re: Another Tip, How to Reduce your Load for a genset

    Thought about going to propane for some things, but wouldn't want to wait for a delivery when everything goes to heck after an ice storm.

  4. #4
    Platinum Member Heywood Jannockitov's Avatar
    Join Date
    Jan 2008
    Posts
    807
    Location
    Near Schomberg, Ontario Canada, the equestrian center of the universe
    Tractor
    2008 John Deere 5425 cab, 1986 Case 580 Super E, 1973 IH454

    Default Re: Another Tip, How to Reduce your Load for a genset

    I was worried about the increased propane usage during the ice storm and deep freeze but the propane truck showed up yesterday to top off the tanks. They're good about delivering before holidays and cold snaps. Like oil, once delivered it's yours! No time-of-use premium like hydro rates!
    Definition of "Horse": A 4 legged mammal looking for an inconvenient place and expensive way to die.

  5. #5
    Platinum Member Heywood Jannockitov's Avatar
    Join Date
    Jan 2008
    Posts
    807
    Location
    Near Schomberg, Ontario Canada, the equestrian center of the universe
    Tractor
    2008 John Deere 5425 cab, 1986 Case 580 Super E, 1973 IH454

    Default Re: Another Tip, How to Reduce your Load for a genset

    Our power was out for 2 days and our 6500 watt genny pretty much ran everything in the house as all heating (water and furnace) is propane. Our biggest draw is the well pump, which you could tell when it kicked in, you could hear the genny load up. We have a small electric 6 gal water heater in the barn wired 240V so it actually only draws 750 watts. After running the genny on and off for two days (mostly on) I could still hear it in my head afterwards for awhile!
    Definition of "Horse": A 4 legged mammal looking for an inconvenient place and expensive way to die.

  6. #6
    Platinum Member
    Join Date
    Feb 2008
    Posts
    719
    Location
    Ontario Canada
    Tractor
    Kubota R510, JD 6200, JD 770, Cushman 6150, Steiner 430 Diesel Max, Steiner 430 Max w Kubota Gas, Kawasaki Diesel Mule

    Default Re: Another Tip, How to Reduce your Load for a genset

    A friends inlaws were without power for eight days in Caledon. They had propane, and even after (finally) securing a gas genset, they couldn't make that **** (computerized) furnace run for love nor money! They never did figure that out. Plus for some reason the pilot light on the water heater went out. It didn't even have any electrical requirement. Lots and lots of frustration experienced.

    Oh, the traps that humans create unbeknownst to themselves!

  7. #7
    Veteran Member CobyRupert's Avatar
    Join Date
    Oct 2012
    Posts
    1,152
    Location
    Washington County, NY
    Tractor
    JD 5075E

    Default Re: Another Tip, How to Reduce your Load for a genset

    [QUOTE=Industrial Toys;3605976] It cuts the wattage in half (I believe) and frees up genset capacity for other things. .[/QUOTE

    Actually, its cuts it by 75% and your left with 25%. Basically, it cuts the wattage output by the square of the voltage difference, so if your voltage is 1/2, then wattage is 1/4. Because:
    P(power) =V(volts) x I (current, amps), The current is determined by the resistance (which is the heater element here and does not change), from Ohm's Law I=V/R, so substituting V/R for I, Power= V^2/R , this is why the power output difference is the square of the voltage difference.

    So as long as you have the capacity in your tank so that you don't notice, or don't care, that the recovery time is 4 times as long, you can cut the hot water heater generator load by 75% by running it at 120V.
    Last edited by CobyRupert; 01-08-2014 at 09:05 PM.
    JD5075E, Frontier RC2084 Rotary Cutter, Wallenstein FX65 Skidding Winch

  8. #8
    Platinum Member
    Join Date
    Feb 2012
    Posts
    755
    Location
    Albany OR
    Tractor
    Case 580B, Long 460, Allis-Chalmers 160

    Default Re: Another Tip, How to Reduce your Load for a genset

    CobyRupert is correct on the math - perhaps an easier way to see this for non-electricians - power (watts) is = to volts times amps - cut the volts in half, it'll also cut the amps in half, so power = 1/4.

    Warning - do NOT try this with a heater that has a FAN - it's likely the motor will try to run with 1/4 the power, and will probably not turn at all - end result is a burned out fan motor... Steve

Similar Threads

  1. Price Check S&S 2-71 Detroit 20 KW Genset
    By DJ54 in forum Buying/Pricing/Comparisons
    Replies: 7
    Last Post: 08-10-2013, 05:51 PM
  2. Do pre-emergents reduce weed seed load?
    By charlz in forum Rural Living
    Replies: 3
    Last Post: 08-08-2008, 03:50 PM
  3. Photos of genset set-up
    By Shimon in forum Attachments
    Replies: 8
    Last Post: 03-02-2006, 11:46 PM
  4. Standby Genset Q's
    By RFB in forum Rural Living
    Replies: 8
    Last Post: 02-28-2006, 11:35 PM
  5. Volt/Freq panel for genset install
    By Shimon in forum Projects
    Replies: 4
    Last Post: 10-25-2005, 07:55 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
© 2014 TractorByNet.com. TractorByNet is a registered trademark of IMC Digital Universe, Inc. Other trademarks on this page are the property of their respective owners.