Re: [sudo-discuss] Sudoroom electrical plans

Fine by me. Just my opinion that loads add up. Indeed we use more things with small loads than ever before... I have worked on houses that get by on two fifteen amp circuits in San Francisco and I have had problems with two hundred amps 220 volts not being enough... Dave Sent from the surveillance van > On Sep 6, 2014, at 5:31 PM, Jake &lt;jake(a)spaz.org > <mailto:jake@spaz.org>> wrote: 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 &lt;jake(a)spaz.org >>> <mailto:jake@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 >>>> &lt;ceremona(a)gmail.com <mailto:ceremona@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, >>>> &lt;hol(a)gaskill.com <mailto:hol@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 >>>> <https://lists.sudoroom.org/pipermail/sudo-discuss/2014-August/007369.html>]. >>>> 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(a)gmail.com >>>> <mailto:ceremona@gmail.com> ------------------- GPG Key: >>>> http://taffy.findpage.com/~cere/pubkey.asc >>>> <http://taffy.findpage.com/%7Ecere/pubkey.asc> GPG fingerprint >>>> (ID# 73FCA9E6) : F5C7 627B ECBE C735 117B 2278 9A95 4C88 73FC A9E6