Trailer and Power Generator
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From: GregS on 25 Jun 2010 09:01 In article <7f1e8f02-6475-4059-84e5-9c91588ad7f9(a)d16g2000yqb.googlegroups.com>, Jim Wilkins <kb1dal(a)gmail.com> wrote: >On Jun 24, 4:22=A0pm, "Leo Lichtman" <leo.licht...(a)att.net> wrote: >> ... >> Before I installed a proper transfer switch, I used a kludge that worked >> well, and didn't cost much. =A0I inserted a 4 connector twistlock connect= >or >> pair into the line from my meter to the house. ... > >I asked the electrical inspector about that, but with an RV type plug >wired to only a single receptacle inside and no connection to the >house wiring, and he threw a snit fit. Is that legal and if so how can >I prove it? > I would want to insert something after a main breaker, not before it. Something about plasma. greg
From: amdx on 25 Jun 2010 12:05 "Neon John" <no(a)never.com> wrote in message news:ice726l8fttohp3h5aisdt7vi8hdfgdteh(a)4ax.com... > On Thu, 24 Jun 2010 10:36:43 -0700 (PDT), whit3rd <whit3rd(a)gmail.com> > wrote: > >>On Jun 24, 9:36 am, "amdx" <a...(a)knology.net> wrote: >> >>> Ya! The initial purpose is to keep 12 chest freezers running. >> >>Zowie! Think about getting a walk-in freezer, dude! Twelve >>chest freezers has a lot of surface area to insulate, one big >>unit would be lower maintenance and less power usage. > > Well, let's do a little math based on actual data. I've logged all > the power consumptions of all the appliances in my house and in my > restaurant. > > Initial cost. > > An 8' square walk-in costs about $5,000 installed. A large chest > freezer is around $300 at Sam's Club. 12 freezers is $3600. The win > on initial cost goes to the chest freezer. > > Capacity: No contest - 12 large chest freezers hold far more than a > walk-in because, well, one must leave room to walk around in the > walk-in. > I have 25 cu ft freezers, 12 x 25 = 300 cu ft of storage. A 8 x 8 x 7 walkin is 448 cu ft but room to walk 2 x 8 x 7 = is 112 cu ft so 448 - 112 = 336 cu ft. Take out another 20cu ft for the evaporator and we are down to 316 cu ft. So very comparable cubic feet. Cost, I think last 6 were $450 each. $5,400 again comparable.
From: GregS on 25 Jun 2010 12:25 In article <785b9$4c24d3cf$45013905$29364(a)KNOLOGY.NET>, "amdx" <amdx(a)knology.net> wrote: > >"Neon John" <no(a)never.com> wrote in message >news:ice726l8fttohp3h5aisdt7vi8hdfgdteh(a)4ax.com... >> On Thu, 24 Jun 2010 10:36:43 -0700 (PDT), whit3rd <whit3rd(a)gmail.com> >> wrote: >> >>>On Jun 24, 9:36 am, "amdx" <a...(a)knology.net> wrote: >>> >>>> Ya! The initial purpose is to keep 12 chest freezers running. >>> >>>Zowie! Think about getting a walk-in freezer, dude! Twelve >>>chest freezers has a lot of surface area to insulate, one big >>>unit would be lower maintenance and less power usage. >> >> Well, let's do a little math based on actual data. I've logged all >> the power consumptions of all the appliances in my house and in my >> restaurant. >> >> Initial cost. >> >> An 8' square walk-in costs about $5,000 installed. A large chest >> freezer is around $300 at Sam's Club. 12 freezers is $3600. The win >> on initial cost goes to the chest freezer. >> >> Capacity: No contest - 12 large chest freezers hold far more than a >> walk-in because, well, one must leave room to walk around in the >> walk-in. >> > > I have 25 cu ft freezers, 12 x 25 = 300 cu ft of storage. A 8 x 8 x 7 >walkin >is 448 cu ft but room to walk 2 x 8 x 7 = is 112 cu ft so 448 - 112 = 336 >cu ft. >Take out another 20cu ft for the evaporator and we are down to 316 cu ft. > So very comparable cubic feet. >Cost, I think last 6 were $450 each. $5,400 again comparable. > 40 years ago I bought a full sized Sears for $250. It still worked whn I gave it away 5 years ago. Watch out if the condensor coils wrap around the side as you need space to breath. On that unit the coils went around the perimeter, no fans. greg
From: Jim Wilkins on 25 Jun 2010 12:31 On Jun 25, 9:01 am, zekfr...(a)zekfrivolous.com (GregS) wrote: > ... > I would want to insert something after a main breaker, not before it. > Something about plasma. > > greg The power grid isn't involved. I want to temporarily run a washing machine or air conditioner from a generator when we lose power after a storm. This is one step above passing a cord through an opened window, without its heat loss and carbon monoxide risk. jsw
From: vaughn on 25 Jun 2010 12:42
"whit3rd" <whit3rd(a)gmail.com> wrote in message news:7b4cc133-9a34-4efa-82ef-5925b23b387f(a)a30g2000yqn.googlegroups.com... >...a freezer indoors costs you twice,once >in freezer electricity and (in summer) again in airconditioning cost. Actually, the situation is not nearly so simple. In terms of the BTU's of heat that are pumped out of the freezer into the room, they are the *very same* heat BTUs that leaked from the room into the freezer. So that turns out to be a wash. Further, the freezers would operate a bit more efficiently in the cooled space because 1) There would be less delta-T across the insulation, so less heat loss + less compressor operation, and 2) the condenser would operate a bit more efficiently in the cooled room because it would see a larger delta-T. On the other side of the equation, all of the waste heat (I squared R loss + core loss) from the compressor motors and (if any) fan motors would appear as heat load to the AC. Vaughn |