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I do not need to necessarily run both the refrigator and sump the same time.

2006-10-29 12:43:49 · 8 answers · asked by Robert U 2 in Home & Garden Do It Yourself (DIY)

8 answers

There are many different sizes of refrigerators and sump pumps. Newer refrigerators are considerably more efficient than older ones. I'd suggest measuring the power requirements of the items you wish to use on generator power and determine the wattage requirements from that. There may be a tag on both devices with electrical specifications which you could use as well.

If you wish to measure consumption, have a look for a Kill-a-watt meter. It will show current and power requirements, as well as energy use over extended time.
http://www.p3international.com/products/special/P4400/P4400-CE.html
http://www.the-gadgeteer.com/killawatt-review.html

I have other portable generator safety and connection information on my web page.
http://members.rennlist.org/warren/generator.html

2006-10-30 22:45:16 · answer #1 · answered by Warren914 6 · 0 0

Home » Home & Garden » Home Repairs and Maintenance » Plumbing


How to Install a Generator for a Sump Pump

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Difficulty: Moderate

Install a generator to keep your sump pump working during power failures.

Instructions
STEP 1: Determine the horsepower of your sump pump (probably 1/2 or 1/3). STEP 2: Calculate the wattage requirement to start the pump. A 1/2 hp pump requires 2,150 watts to start and a 1/3 hp pump requires 1,300 watts. The wattage requirement to operate the pump after start-up is approximately 60 percent of the total. STEP 3: Consider whether you want your generator to run other appliances during a power failure. Calculate the wattage requirements to run these appliances as well. A typical refrigerator requires about 2,200 watts to start and about 700 to run thereafter. Lights require the wattage of the bulb. STEP 4: Purchase a generator of sufficient wattage for your needs. STEP 5: Have a qualified electrician install a transfer switch if you intend to use the generator for backup power to the house. This is not necessary if you intend to simply plug the pump and any other appliances into the generator manually as needed. STEP 6: Keep sufficient fuel on hand to operate the generator. STEP 7: Follow all operating and safety instructions that come with the generator. Tips & Warnings
You do not need a generator sufficient to start everything simultaneously. You can manually hook up the refrigerator and lights after the pump has started.
Generators have a maximum and a rated output. The maximum output should never be sustained for more than 30 minutes, so you can figure on the maximum for starting appliances, but not for sustained operation.
Overall Things You'll Need
Generators

2006-10-29 12:47:58 · answer #2 · answered by philski333 5 · 1 0

Depends on the amp draw of the appliances. This usually can be found on the model and name plate on the appliance. find the total amp draw of both, then multiply the amps times the voltage, and this will give you the wattage you need. probably around 4000 watts. Here is a site that has a calculator to figure what size generator you need, for what you are running. http://www.askmikeb.com/power.htm

2006-10-29 12:57:31 · answer #3 · answered by Bob G 2 · 1 0

If you have a generator with more than one winding, plug your appliances into the outlets which go to the seperate windings. This way you will have more reserve power for additional appliances.
Wattage Estimation Guide for Portable Generators by American Honda Motor Company
http://readhere.co/wp/portable-generator-wattage
Here is a handy portable generator wattage estimation guide for household appliances, recreation appliances, construction appliances, and farm equipment. Handy for estimating the size (in watts) of a portable generator needed to power your appliances. Includes the starting watts and running watts for each appliance. I sized 8 generators with it, for myself, relatives, and neighbors, and so far I have found it to be helpful.

2013-11-23 04:00:27 · answer #4 · answered by ? 3 · 0 0

Figure a power budget by adding the watts of items to be powered add 10%. That will be the size you need. Example: Refridgerator 110VAC@10Amps=1100Watts, sump pump 110VAC@5Amps=550Watts. 1100+550=1650Watts + 10%=1850Watts. Power=VoltsXAmps

2006-10-29 12:52:06 · answer #5 · answered by FreeWilly 4 · 0 0

120 x amperage of fridge = wattage of fridge.
120 x amperage of sump pump = wattage of sump pump.

ADD WATTAGES TOGETHER. GET NEXT LARGEST GENERATOR.

2006-10-31 10:20:58 · answer #6 · answered by Anonymous · 0 0

u can get by with a very small one.....3500 would do it well maybe even a 2500..check the amps on the pump then the frig mostly takes about 12 amps....then get a gen that will handle that amount of amps.......

lic. gen. contractor

2006-10-29 12:49:28 · answer #7 · answered by bigg_dogg44 6 · 0 0

P over I,E. E over I,R.

2006-11-02 12:11:38 · answer #8 · answered by Dawg 4 · 0 0

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