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| Author |
Message |
| 25 new of 76 responses total. |
mdw
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response 50 of 76:
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Dec 21 23:20 UTC 1994 |
It may be worth redoing the phone wire; but it's not essential; it would
suffice to put a piece of plywood up and screw the existing jacks in.
All that would be needed, then, would be to put up some ordinary cheap
wallmount bookshelves next to the jacks, put the modems & a powre strip
on the shelves, & string wire to the jacks. The result will be neat,
professional looking, and give us a fair amount of room for expansion.
The parts that are most likely to deteriorate are the external wiring
(over which we have no control), and any connectors -- which are easy
enough to detect if they're flakey.
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tsty
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response 51 of 76:
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Dec 22 02:50 UTC 1994 |
About a year ago the M-b0x redid the incoming phone wiring to
clean up their previous spaghetti. I think there were 12 lines
on the new backboard.
Al their stuff comes out to RJ-12/14 boxes. Fwiw, I have telephone
cable ends and the custom tool for crimping them. Volunteers?
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jep
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response 52 of 76:
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Dec 22 03:16 UTC 1994 |
I don't think power is a big consideration in that building. I don't
recall many problems with power outages, either.
* The following is not an offer, it is a suggestion only *
Arbornet recently received a donation of a big BEST UPS. It's too
big, we believe, for us to use it in the NEW Center. It would generate
too much heat for us to use it in that little room. It might be possible
for Grex/Cyberspace to make a deal for it with Arbornet.
TS saw it yesterday, and might be able to give more information about
it than I can. I do have the manual here... somewhere... I believe it's a
120V, 30 amp UPS. It's quite intelligent.
Ah, here's the user manual. It's a 1000 VA Micro-Ferrups M1000. The
manual says it's 20 amps, 120 volts. It has a plug with the two flat
prongs perpendicular to one another. It's 29" long, 12.375" wide, 18"
high, and weighs 210 pounds. I think it has 5 outlets, plus a serial
port. It hasn't been used in 2-3 years according to the donor.
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popcorn
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response 53 of 76:
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Dec 22 04:31 UTC 1994 |
Re power in the dungeon: During the summer when Carl and I were there
talking to Beth and Nick, they mentioned that they'd been blowing a lot
of circuit breakers in the house, so they'd recently had the electric
company run a new power line into the house.
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mdw
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response 54 of 76:
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Dec 22 05:03 UTC 1994 |
Assuming it's a UPS and not a power conditioner (of which we already
have 2), yes, it's probably something we could use. I think we'd want
to inspect it to be sure it's working, and perhaps try it out; the 2
issues I can think of are (1) making sure the batteries haven't leaked,
and (2) it doesn't glitch when the power is switched over.
One interesting number you left out is what its energy capacity is; ie,
how long it's going to last at a given load. I don't think that's going
to make a big difference to us (1 minute will cover 90% of all power
failures) but it might be handy to know.
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steve
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response 55 of 76:
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Dec 22 05:26 UTC 1994 |
Thanks John. (sent him mail about looking at it).
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tsty
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response 56 of 76:
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Dec 22 13:19 UTC 1994 |
It is a true UPS (with 5 batteries I think). Supposedly, it
allows 15 minutes of work at 1000 VA after power is lost, and
has what appears to be an RS-232 output to connect to somewhere.
It has a 120 V, 30 A plug on it, so it needs a higher-than-normal
wiring and circuit breaker arrangement.
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mdw
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response 57 of 76:
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Dec 22 17:37 UTC 1994 |
There aren't any rules against putting a smaller CB on it, but if it has
an outlet on it, it probably already has a CB or some other short
circuit protection already. If you want to get the most out of it, it's
true you'd want appropriately rated wiring, and if you want to go for
maximum safety, additional CB's never hurt.
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tsty
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response 58 of 76:
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Dec 22 22:43 UTC 1994 |
The plug, the AC input wire, is a 30 Amp 120VAC plug. Configuration
is like this:
| --
*
Imagine a circle around the above diagram. The * is the ground
and the two spades are a right angles to each other.
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jep
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response 59 of 76:
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Dec 23 02:44 UTC 1994 |
I sent mail asking if anyone wanted to come look at it this evening,
I was in the office. I'll be around Tuesday and Wednesday next week if
that will work. Maybe by then I can get negotiating authority from the
president or treasurer of Arbornet. I'd certainly consider it reasonable
to let Grex try it out for a little while before we come to any final
agreement.
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mdw
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response 60 of 76:
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Dec 23 05:09 UTC 1994 |
If I remember right, the kind of plug TS describes is a special sort
most commonly used for certain high amp draw computer equipmment; it's a
special "locking" kind of plug so it can't be unplugged accidently.
Typically it then goes to a power distribution panel in the rack, and
may include one or more circuit breakers, plugs, electical isolation
protection, and one or more electric fans for the rack.
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mju
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response 61 of 76:
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Dec 23 06:38 UTC 1994 |
Uh, actually I think the plug TS is describing is just a standard
30A plug. I've seen the locking-type plugs (also known as twist-locks),
and they typically have the spades arranged in a circular fashion,
rather than the triad that regular plugs have.
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rcurl
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response 62 of 76:
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Dec 23 08:04 UTC 1994 |
Is not that kind of outlet reserved for 240V(2P) service, for ranges
and dryers? (That is, the one described by TS.)
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gregc
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response 63 of 76:
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Dec 23 12:46 UTC 1994 |
The plug you are describing is just a standard 20amp plug. You can get
them in any hardware store. They are not special for electronic equipment,
in fact ost air-conditioners have those plugs.
The thing that Marcus is describing, is a 30amp twist-lock plug. Those
things are big and expensive. They have their contacts arranged in a circular
pattern. I've got on sitting on the desk next to me as I type this.
They are generally used on computer and medical equipment, things you
don't want to have the cord knocked out on casually.
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andyv
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response 64 of 76:
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Dec 24 09:32 UTC 1994 |
They are typical of connections used on extension cords on construction sites
also (fwiw).
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jweiss
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response 65 of 76:
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Dec 24 23:25 UTC 1994 |
RRe: 54
Another thing to check it that you don't have a problem switching back
to line power. I've seen som UPS's that cut over to battery w/o a problem
however, as soon as teh switch back to line power, the machine boots.
It kinda sucks, a lot. Unfortunatly, the cases I've seen seem
to depend on how close to the recommended max. load of the UPS you are,
and how cheesy the power supply in the equiptment you have is.
We have some DECstations, with really cheesy power supplies, but what
our UPS's do to switch back to line power is cheesy too.
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nephi
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response 66 of 76:
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Dec 31 00:11 UTC 1994 |
I have consulted a map and plan to come from interstate 94. Who should I
meet? Where should I meet this person? When should I meet this person?
Where can I find accomodations?
Either email me or answer me here. The trip sounds like fun.
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tsty
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response 67 of 76:
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Dec 31 01:12 UTC 1994 |
The plug is a straight push in/out, no twist-lock. The outlet
that feeds it ad the wiring for it, need to be heavier
thanusual - can't say i know exactly what wire size is called
fro though, right off the top of my head.
I'd recommend 10 gage, fwiw and a 30 am cktbkr and a single outlet
on that branch circuit (well, one duplex outlet).
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steve
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response 68 of 76:
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Dec 31 02:57 UTC 1994 |
Nephi, it's *real* easy to get to the warehouse where Grex lives.
Take 94 East until you hit Michigan. Keep going. Stop at exit #172.
Exit 172 merges into Jackson Avenue, but going the wrong way. There
is a hotel/restuarunt called Webber's that you'll see on your left as
you come off the highway. There is a small turnaround at the hotel
which lets you either change directions on Jackson or go into the hotel
parking lot. Don't go to the hotel; get back on Jackson. Go about
1 mile on Jackson 'till you see a stoplight. The crossroad will be
Wager. Take it left. Go on wager about .3 miles until you see the
mostly while and a little red Communications Electronics sign. Go in
there, and park on the right.
However, you should probably meet us at whereever we're having
food/cafiene such that we can get going. In that case, disregard most
of the above. ;-)
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srw
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response 69 of 76:
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Dec 31 08:47 UTC 1994 |
STeve meant Wagner, not wager. Actually, I thought nephi was coming to
Ann Arbor on the 8th to help with the drywall, or on the 14th or 15th
to help with the painting. He'll need to meet someone at the Dungeon.
If that's right, nephi, you still want to get off at exit 172, but
then you'll need to go into town, which is totally different.
Let us know and we'll send you exact instructions by email.
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popcorn
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response 70 of 76:
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Jan 2 02:44 UTC 1995 |
Nephi - if you promise that you're not an axe murderer, you can stay
at Rob's (ajax) and my place. I'll send you directions. It's probably
easier for you to show up here, first, and then I can drive you on
over to the Dungeon or wherever is appropriate.
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davel
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response 71 of 76:
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Jan 2 02:53 UTC 1995 |
Don't forget to get him to sign off on chain saws, too!
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popcorn
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response 72 of 76:
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Jan 2 02:54 UTC 1995 |
And drool. I had some very young houseguests yesterday, and they drooled
on everything. If you're going to lick all the furniture, nephi, then
you'll have to stay at someone else's place. :)
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tsty
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response 73 of 76:
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Jan 2 13:49 UTC 1995 |
.... either that or spray your tounge with furniture polish first ....
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nephi
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response 74 of 76:
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Jan 3 21:19 UTC 1995 |
Thank you, popcorn! I plan on helping with the painting on the 14th and
15th. I promise to leave my axe and chainsaw at home, as well--and I stopped
drooling last year, so you have nothing to worry about. 8*)
I have sent letter with details.
It will be cool metting all of you.
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