Article View: misc.rural
Article #1612Re: Generators
From: Marc T. Kaufman
Date: Sat, 03 Sep 1994 16:12
Date: Sat, 03 Sep 1994 16:12
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4298 bytes
In article <MARCEL.94Sep2095506@blasphemous.ictv.com>, Marcel Burlet <marcel@ictv.com> wrote: >Since we live "in the country" by California standards (well, _not_ >city water; septic system _not_ sewer; Electricty doesn't run all day, >every day), we are looking for a backup generator. (The thought of >waiting 2 or 3 days to >1st criteria: > Gotta run the water pressure booster pump (1 hp, start > capacitor, 220V @ 15A breakers). My well guy says 3500watts > min, I'm thinking 5kw. ( we have a 5000 gal tank: we don't > need to run the well pump and the pressure pump at the same > time). 1 hp is approximately 7.5 amps at 220V, steady state. Double that for starting. 3500 watts (KVA) should be enough. Unless you want to run some lights or a coffee maker, too. >2nd criteria: > RELIABLE! (Since the power hardly ever goes out when the sun is > shining on a warm and dry day). I don't want to be out in the > rain swearing at the *#)($&@ generator, just so I can take a > warm shower. Get a name brand, and be sure to RUN IT at LEAST twice a month. Automatic generator systems typically exercise for 20 minutes once a week. >Other criteria: > Should run on gasoline. Propane is available, but plumbing it > could be a problem. I have no experience with diesel, but > that might be doable. Bad choice. Gasoline doesn't keep well. However, for a 3500 watt generator it may be a reasonable choice if you use stabilizer, run the generator, and don't try to store too much gas (that doesn't get used) at home. > Noise is not a big deal: it's going to be out back, away from > the rest of the house. Quieter is nicer, but if it's REALLY > LOUD, we'll just put it near this neighbor that .... :-) Most new generators are very quiet. > Should not cost more than my last new car! (that 20kv WINCO in > the paper was tempting, but my wife started saying "I don't > think so, Tim"!). Used generators are sometimes available. > We will look into some sort of switchover/isolation relay > stuff, but we'll go manual for right now. How should I connect > this thing? For a permanently wired generator, the requirement is that a DPDT transfer switch be installed between the breaker and the load, so that there is absolutely NO possibility that you might back feed the power into PG&E's lines while they are being repaired. The switch must be able to switch the full current of the circuit (as dictated by the breaker). For my house, which has a 15 KVA generator, the switch can handle 200 amps, as it is right after the house main breaker. >Questions: > What brands are recommended? (Honda is good: Honda is > expen$ive). Kawasaki is also good for small generators. My big generator (which is plumbed to propane) is a Generac. It is rated to run 24 hours a day for months at a time. The longest single run to date has been 36 hours. > What brands to avoid? > > I'm certain that Honda engines are good, but why do some > brands (e.g. generac, coleman, ...) cost so much less?? The gas engines are made in an unnamed asian country. > What features to look for? (e.g. How do I determine that the > generator will do a good job at maintaing voltage, put out > good 60hz, ...). The stability of the generator is primarily determined by how close you are running it to the limit. A bigger generator will be more stable. >Thanks much in advance Marc Kaufman
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 10db0a,27ef007800f67f48 X-Google-Attributes: gid10db0a,public X-Google-Thread: 1012ff,27ef007800f67f48 X-Google-Attributes: gid1012ff,public X-Google-Thread: f514b,27ef007800f67f48 X-Google-Attributes: gidf514b,public X-Google-ArrivalTime: 1994-09-03 09:12:06 PST Path: arc1-ca.pugleaf.net!nntp.gmd.de!Germany.EU.net!EU.net!howland.reston.ans.net!agate!news.Stanford.EDU!Xenon.Stanford.EDU!kaufman From: kaufman@Xenon.Stanford.EDU (Marc T. Kaufman) Newsgroups: misc.rural,misc.consumers.house,ba.mountain-folk Subject: Re: Generators Date: 3 Sep 1994 16:12:06 GMT Organization: Computer Science Department, Stanford University. Lines: 88 Message-ID: <34a78m$8dt@Times.Stanford.EDU> References: <MARCEL.94Sep2095506@blasphemous.ictv.com> NNTP-Posting-Host: xenon.stanford.edu