[sudo-discuss] Sudoroom electrical plans

[Jake]

I disagree.  We have very few things that use more than 100 watts, and the 
number is diminishing constantly.

a laptop takes no more than 100 watts max, typically around 50. 60 watt 
lightbulbs are occasionally used, but more often we use 24 watt CFLs, when 
we're not simply using the overhead lights.

Desktop computers with their monitors take a total of less than 200.  3d 
printers take between 50 and 100 watts depending on how much heating is 
needed.

A heat gun can take 1500 watts, but a 20-amp breaker can supply over 2400 
watts.

Without a more detailed list of what people expect to plug in, we can't be 
sure one way or another whether there will be conflicts requiring 
something to be plugged into a different outlet.  But my experience tells 
me that what we have sketched out so far is more than enough.

and we know for a fact that increasing service will correspondingly 
increase costs and time to completion, and complexity if we run out of 
circuit breakers overestimating our needs.

Worst case is that you have to plug the second autoclave into a different 
outlet than the first one.

-jake

On Sat, 6 Sep 2014, Dave Pedroli wrote:

> Hi all,
>
> Going over your emails and PDFs it looks good however putting more than a couple outlets on a breaker will end up being problematic.  Yes refrigerators are smaller loads but there will be a time when someone opens all one after the other and they try to start all at once blowing a breaker and defrosting... Autoclaves typically need their own circuit etc ...  13 outlets with 4 breakers is pushing it. If the majority of use was to be laptops and soldering irons ok but the minute a heat gun is plugged in poof, you blow a breaker. With electricity and parachutes it's best to start out right rather than build up to it.  I'll go over the PDFs on my iPad later and let you know what I think.  The layout looks fine, the number of outlets looks good it's just the the number of circuits (breakets) that needs improving.
>
>
> Dave
>
> Somewhere on the bonneville salt flats
>
>
> Sent from the surveillance van
>
>> On Sep 5, 2014, at 3:58 PM, Jake <jake at spaz.org> wrote:
>>
>> I believe the electrical panel in the balcony only supplies one or two things (not including the robot, which is a temporary connection)
>>
>> I think we should look into simply moving that breaker box down ten feet so it faces the server room, and be done with it.
>>
>>> On Fri, 5 Sep 2014, Whitney Lawrence wrote:
>>>
>>> Howdy,Let me begin with thanking you for looking at the proposal. Your interpretation of the plans is
>>> correct.{ Main -> above stage panel -> balcony panel } is how the proposed plan is drawn. There is enough room
>>> in the balcony panel (which is the one located in the small room that shares a wall with the server loft of
>>> sudoroom) to accomplish phase 1 of the proposal. The proposal is based on instruction received to minimize
>>> cost. Ideally, there would be a main panel breaker that supplies a sub panel for all of sudo's needs (phase 1
>>> and phase 2). I can't accurately guess at a cost number for this type of installation. Figure a 100amp sub
>>> with hundreds of feet of 2awg plus breaker box plus breakers plus conduit plus hardware. All depending on if
>>> the main service can even handle the additional power demands (hiring an electrician to run the calcs).
>>> Ballpark $3-5k maybe- but its really a shot in the dark?
>>> My experience with this type of thing is there is always a better way to do it, if you go the money.
>>> A middle road is to plan on having the future sudo-sub panel placed near the balcony panel. Build in an extra
>>> 5ft or so of wire for the future transition into the new sudo-sub panel. All that would be needed is to remove
>>> the breakers from the old box re-run wire from J-box 1 to the new sudo-sub, as well as re-routing the 240V
>>> lines from the above stage panel to the sudo-sub (and of course preform all the main -> suod-sub work).
>>> as far as existing vs proposed. only the sub panels mentioned above exist currently- I'll make a note to call
>>> out the existing stuff in the drawings.
>>> Thanks,
>>> Whit
>>> On Fri, Sep 5, 2014 at 11:42 AM, Cere Mona Davis <ceremona at gmail.com> wrote:
>>>      Hi everyone.  It's the first time I have looked at these plans and I have some questions and
>>>      thoughts.  Dave said he won't be able to respond to this email until a couple of days as he is out
>>>      in the boonies somewhere.  So I am writing in to expedite some issues that I think he will likely
>>>      bring up in the days ahead.
>>> Whit, thanks for drawing up these plans!  For someone who is not intimately familiar with our electrical
>>> layout the plans might need a more clear description of existing electrical vs. proposed new electrical,
>>> however.
>>> In multiple conversations with Dave (and one on-site visit) he has mentioned repeatedly that we will
>>> want to shoot for putting in another sub panel for the sudoroom off of the main panel as the end-game;
>>> rather than daisy-chaining off of an existing panel (the balcony) as what seems to be proposed here.
>>> If we can't immediately put in a sub panel into the room, due to cost, we should at-least be planning
>>> for conduit and wiring paths, etc that allows for a sudoroom sub-panel in the future.
>>> Thoughts?
>>> -Cere
>>>
>>> On Fri, Sep 5, 2014 at 10:23 AM, <hol at gaskill.com> wrote:
>>>
>>>      Thanks Yar!  Whit can you liaise w/ Dave RE how much of the work is going to be done under
>>>      the first permit?
>>>
>>>
>>>
>>>      Cheers,
>>>
>>>      Hol
>>>
>>>
>>>
>>>
>>> On 2014-09-04 23:16, yar wrote:
>>> Hi all, Dave Pedroli is a certified electrician who's offered to
>>> review our plans to give them an okay. I'm copying him and the people
>>> who've been most involved with electrical work.
>>> Dave, the latest plans are attached, and also available online[1].
>>> Could you please look them over and write us a few formal-sounding
>>> sentences that boil down to "hello I am a real electrician and I say
>>> these plans are solid"? This will help us make the landlord happy so
>>> he will let us do them. Thank you!!
>>> [1] https://lists.sudoroom.org/pipermail/sudo-discuss/2014-August/007369.html
>>> --
>>> Best Regards,
>>> Cere Davis
>>> ceremona at gmail.com
>>> -------------------
>>> GPG Key:  http://taffy.findpage.com/~cere/pubkey.asc
>>> GPG fingerprint (ID# 73FCA9E6) : F5C7 627B ECBE C735 117B  2278 9A95 4C88 73FC A9E6
>