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temperature high&low in comp.room
george gagnon Sep-28-01 06:55 PM
i'm an electrician in salem,ma where the temperatures can and do range between 105 & -20 degrees farenheight.i've been asked to wire an outdoor shed which is being converted to a study room-computer room.what i need to know is how low can the temperature be kept when the room is not in use,as well as how high it can go with the computers off without causing any problems?
any and all help will be greatly appreciated.

1. RE: temperature high&low in comp.room
lbyard Sep-28-01 09:01 PM
In response to message 0
I live up the road in Southern Maine (Climate Zone 38, was 5; see http://www.homestore.com/LawnGarden/Zones/Climate/RegionL.asp http://www.mooarhillfarm.com/Climate_Zones/climate_zones.html); however, it has not gotten below –10 deg F in several years. My computers are in an insulated garage, which has been converted to an office/computer shop. I heat it with a wood stove and I let the fire go out at night. It might get down to the lower 40’s F if I take a day off during sub-zero weather. It may have gotten into the 30’s a couple of times. I have three computers out here and they have been happy enough for the last year or so. If a computer gets terribly cold (e.g, shipped UPS in the middle of the Winter), it is advisable to let them warm-up before applying power. It is possible for disk drives to form condensation internally. Larry

2. RE: temperature high&low in comp.room
george gagnon Sep-28-01 10:28 PM
In response to message 1
thank you larry for such a quick response.
this is a type of occupancy that i haven't encountered in the past(44 yrs.)my main concern is to be as sure as possible of the pc's needs temp. wise to enable me to properly size the feeder circuit to the out building ,to provide for heating and cooling without going overboard,which would be a diservice to my customer,as would failing to provide the necessary heating/cooling to avoid damage, and or
poor performance.
thank you again!

3. RE: temperature high&low in comp.room
lbyard Sep-29-01 04:38 PM
In response to message 2
I don't know about the heater or A/C (I don't have an A/C), but I think I would run at least 20 Amps for the computer equipment and lots of outlets. An outlet strip with 12 outlets behind and above the computer table would be handy if code allows. The customer may want surge suppression. For safety, I would install a breaker box at the remote location. Some sort of smoke detector system with an alarm in the house would probably improve sleep. I would also put-in a burglar alarm system if the equipment costs more than $5,000. I would consult the insurance provider on that issue. Have them put in the network cable during the rehab. Try to not to put it on the same stud with power lines or next to phone lines. You may need some help with that. Some people who do phone work also know how to do it. Larry

4. RE: temperature high&low in comp.room
george gagnon Sep-29-01 06:40 PM
In response to message 3
thanks for the info,or thanks again if you're the same larry from yesterday.
these are all good suggestions,electrical code requires a disconnecting means for all the circuits in the building at the entry door,so a breaker panel with a main breaker&four circuits-one for general lighting,one each for the two computers,
one for the air conditioner,and the heater(s) on one or two 110 or 220 circuits.the burglar&fire alarms would be good ideas,i believe the electrical,and or building codes will mandate the fire/smoke alarms.i'm also working with the owner to determine whether to install tel.or catv lines out there,i'm pushing to bring out both,the customer is looking to keep the cost down,which i feel is false economy(but of course i don't have to pay for it),i've also suggested an intercom,as well as a closed circuit tv system,not to spy on the kds,but to keep them on the straight and narrow,not knowing when they're being watched/listened to.
how would you choose to go if you were the customer?
at this point i'm almost afraid to suggest adding anything more to the job for fear of over pricing the job,but on the other hand if all of the bases aren't covered and something becomes necessary after the trench is filled in,i'll still look bad.
perhaps i'm being overly concerned,but like i said earlier,this is a first for me.heck this stuff wasn't even invented when i was starting in this business,try as i may i just can't seem to catch-up.
oh well!
thanks again larry,

5. RE: temperature high&low in comp.room
lbyard Sep-29-01 07:46 PM
In response to message 4
Thanks. That is some good info for readers planning a home office… I sure would run some CAT 5E network cable out there, especially if it's going through a pipe in the ground (and suggest a fat pipe and running extra pull lines if it is), which it should, if detached, to avoid a lightning hazard. The cable is very cheap. CATV should be RG-6 even though it costs more. Phone line should be twisted and is cheap. Yes, an intercom might be handy if not part of the telephone system. I am presently looking into them so THE Wife doesn’t have to call me on the telephone (we have two phone lines and three home offices) when supper is ready, etc. I have door accessible to customers and I am thinking of putting in a camera or two and an announcement system. Larry (the same one--this is my web site)

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