Re: Suggestions for a 4-way switch.
I might be misinterpreting what you are trying to get across, but this does not look to me like the right way to do it (i.e. safe and compliant with the NEC). You should be able to keep the grounded current carrying conductor (aka neutral) from ever being switched with the other conductors.
Check out this link: [URL="http://www.buildmyowncabin.com/electrical/how-to-wire-4-way-switch.html"]How to wire a 4-way switch[/URL]Re: Suggestions for a 4-way switch.
I might be misinterpreting what you are trying to get
Announcement
Collapse
No announcement yet.
User Profile
Collapse
-
Re: Suggestions for good plenum grade cat 5e cable
10 and 100 Mbps ethernet over twisted pair only use two differential pairs: one pair for transmit and one pair for receive. Some early installations used the other pairs for telephone signals, or a second ethernet connection, but this was deprecated a long time ago. Gigabit ethernet uses all 4 pairs for signaling. PoE can be carried on the pairs that 10 and 100 Mbps do not use, but on gigabit the power can be on any/all of the pairs carrying signal.
EDIT: sorry, I didn't see your reply before typing t...Last edited by Uniballer; 04-03-2017, 11:07 AM.
Leave a comment:
-
Re: Suggestions for good plenum grade cat 5e cable
Only 2 pairs are used for 100-Base-TX (100Mbps). All 4 pairs are used for 1000-Base-T (gigabit), and for 100Mbps with POE. Install all 4 pairs using the appropriate standard [URL="https://en.wikipedia.org/wiki/TIA/EIA-568"]EIA/TIA-568A or 568B[/URL] (your choice, but one building should only be wired one way).
If you do a good job installing it then that cable will work great for everything up to gigabit ethernet.
49.125 pF/m would be 4.9125...Last edited by Uniballer; 04-02-2017, 04:23 PM.
Leave a comment:
-
Re: Suggestions for good plenum grade cat 5e cable
I like Belden 1585A cable just fine. The price, not so much.
I have used many brands and they generally all work fine (I had some Southwire cat5e cable that sucked to work with because of the insulation, but once installed it worked just as well as all the others). Beware of CCA (copper coated aluminum) cables: AFAIK these do not really meet the required specifications.
Gigabit ethernet uses frequencies up to about 125 MHz, so you really don't need 350 MHz cable.
FYI - ethernet uses isolated...Last edited by Uniballer; 04-02-2017, 08:31 AM.
Leave a comment:
-
Re: Issue with USB 3 or Win10 or both?
Did you try putting a USB 2.0 hub between the device and the laptop?
Leave a comment:
-
Re: New electric panel.
You probably have no choice about using AFCI breakers if you replace the panel because the current electrical code (2014 NEC) requires them. Contact your local building inspector if you have questions about that....Last edited by Uniballer; 10-27-2016, 10:41 AM.
Leave a comment:
-
Re: Reading Schematic?
If you actually want help with a specific schematic then post a picture, or a link to it.
Leave a comment:
-
Re: Suggestions on how to CAT6, CAT3 and RG6
[URL="https://www.amazon.com/Drywall-Professional-Techniques-Homebuilding-Paperback/dp/1561589551"]Myron Ferguson's book on drywall[/URL] is pretty good. He also has a blog and youtube videos, but I haven't really checked those out, since I haven't done any drywall lately.Re: Suggestions on how to CAT6, CAT3 and RG6
[URL="https://www.amazon.com/Drywall-Professional-Techniques-Homebuilding-Paperback/dp/1561589551"]Myron Ferguson's book on drywall[/URL] is pretty good. He also has a blog and youtube videos,
Leave a comment:
-
Re: Am I wrong on this?
There is not enough information in the screen shots to be sure what is being measured. For example, if the tech is reading framing info, or measuring actual throughput to the first hop router (wherever that is physically located), and the user is trying to use speedtest.net, or to download a file from a real server out on the Internet when everybody in the neighborhood is doing the same, it is no wonder that the measurements differ.
One of my co-workers who is paying for 100 Mbps Internet access over Verizon FiOS asked me to check it, and he...Last edited by Uniballer; 10-12-2016, 06:46 PM.
Leave a comment:
-
Re: Suggestions on how to CAT6, CAT3 and RG6
I think you probably bought [URL="http://www.homedepot.com/p/Carlon-3-4-in-x-100-ft-ENT-Coil-Blue-12007-100/100404116"]ENT[/URL] (aka smurf tube). Not plenum rated.Re: Suggestions on how to CAT6, CAT3 and RG6
I think you probably bought [URL="http://www.homedepot.com/p/Carlon-3-4-in-x-100-ft-ENT-Coil-Blue-12007-100/100404116"]ENT[/URL] (aka smurf tube). Not plenum rated.Re: Suggestions on how to CAT6, CAT3 and RG6
I think you probably bought...
Leave a comment:
-
Re: Suggestions on how to CAT6, CAT3 and RG6
It's going to work fine. Most houses have pretty short cable runs if you put switches and so on in a reasonably central location. The cable and transmission specifications are so good that you can generally run the next service level up if you are not near the distance limits (e.g. 55 meters of Cat3 could often run 100baseTX).
Prior to EIA/TIA-568, early 10baseT installations frequently had one ethernet signal and one or two analog telephone signals in the same cable. That would be considered a Very Bad Idea (tm) today,...
Leave a comment:
-
Re: Website, CSF, and lots of attacks.
Most attacks are run from scripts that try the same attacks endlessly on any IP address and TCP/UDP ports they can connect to. Telnet is normally on port 23, and some people are known to run a telnet server at port 2323 (although nobody should be using telnet for remote access anymore), just as HTTP normally runs on port 80, and some people run an HTTP server at 8080. These "attacks" you are seeing are just probes looking for known weaknesses so they can start a real attack. It's just Internet life in 2016.
I generally...
Leave a comment:
-
Re: Anyone good with DNS stuff?
I do not feel that there is any additional exposure from using NAT to support the internal LAN and DMZ using a single IP address, than if I was using multiple IP addresses. A bad NAT or firewall bug could kill you either way. The most important part is that the internal client machines are not exposed if one of the server machines is compromised, and that if an internal client machine is compromised it will take a script-kiddie some work to find access to the server machines.
[URL="https://www.sonicwa...Last edited by Uniballer; 07-22-2016, 01:11 PM.
Leave a comment:
-
Re: Anyone good with DNS stuff?
I have a router/firewall with multiple LAN ports. One of the ports is configured for my internal LAN, and two others are configured as DMZ networks which only have one server machine each. The servers can not see each other, but can both be reached from the internal LAN (but they are in a different private IP network than the internal LAN).
I have a single static IP address. Incoming connections that are allowed are translated to go to the appropriate server on the DMZ....
Leave a comment:
-
Re: Anyone good with DNS stuff?
Personally, I would not run an Internet-accessible server on a LAN with internal machines. This is what a [URL="https://en.wikipedia.org/wiki/DMZ_(computing)"]DMZ[/URL] is for. I have always been much more comfortable with dedicated server machines, as well (there have been some interesting exploits that relied on a single poorly configured machine doing SMTP, FTP and HTTP).
Use [URL="https://en.wikipedia.org/wiki/MX_record"]MX records[/URL] for email server redundancy and availability.
...Last edited by Uniballer; 07-20-2016, 02:57 PM.
Leave a comment:
-
Re: Anyone good with DNS stuff?
I can't think of much practical reason to bother with round robin DNS if it just leads to the same machine anyway.
A DNS lookup is not necessarily done every time you resolve an address. A lot of [URL="http://blog.catchpoint.com/2014/07/15/world-dns-cache-king/"]caching[/URL] is done in recursive name servers (i.e. the ones looking up names for ordinary users), and hopefully in most clients as well. That is why every DNS record has a Time To Live. Round robin DNS can help spread requests for sites that have tons of clients looking...Last edited by Uniballer; 07-19-2016, 01:59 PM.
Leave a comment:
-
Re: Trippling internet speed with pare of AA batteries, ethernet cable and electric t
If you are running on WiFi then you might very well triple your Internet speed by connecting to your router by ethernet, instead. I don't know how the batteries and electrical tape are supposed to help.
It is always safest to assume that someone is listening....Last edited by Uniballer; 06-29-2016, 07:05 AM.
Leave a comment:
-
Re: Recommendations please
If there is a business purpose to support it then putting in fiber is the best answer. In the long run it will pay for itself in reliability, bandwidth, lightning immunity, etc. Run everything on it: Internet, in house computer links, telephone system, video surveillance.
Leave a comment:
-
Re: Obligatory backup server question
Probably not directly, but it can if the server is exporting filesystems based on the ZFS volumes (e.g. Samba based, or NFS, or whatever)....
Leave a comment:
-
Re: Obligatory backup server question
If he was running, for example, Samba to provide Windows with network file services then it doesn't matter what operating system the server is running: the data is vulnerable to cryptoware.
It doesn't matter if you are running BSD, Linux, OS X, or Windows. If the disk is plugged in to the grid when lightning strikes then you could burn it up. If that matters then you need offline backups. If the building burns down or gets flooded then you could lose your offline backups, too. If that matters then you need offsite backups.
Leave a comment:
No activity results to display
Show More
Leave a comment: