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I'd like some advice on cable melting possibilities.

I've put some utp and coax cables thru some walls and want to close off the holes with a hardening foam. Something like PUR foam or whatever.

Now i've read on different sites:
1. https://www.electriciansforums.co.uk/threads/polyurethane-insulation.60170/

  1. http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=1521

  2. https://www.worksafe.qld.gov.au/forms-and-resources/newsletter/esafe-newsletters/esafe-editions/esafe-electrical/2016-bulletins/tpspvc-cables-in-contact-with-polystyrene-products

That if i'd use PUR (polyurethane) foam in combination with the PVC coax cable, over time the PVC might degrade and even fuze with the PUR foam. After a while de-polymerisation might happen, that breaks down the pvc and could degrade the cables.

Does anyone know if this all can/will actually happen?

I only found those 3 sites. In this information age that would normally mean its BS, as i would have found hundreds of articles during my searches if it were true.

Also, how about LSZH cables?
Does anyone know if there's any chance on any chemical reaction with these cables?

p.s. Running the cables thru conduits cant be done. The cables have pretty big pre-fab RJ45 and coax connectors on them for shielding purposes.

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1 comment
1

Flexible glow rod

Looking for a very flexible glow rod (fish stick) that can be transported in a coil rather than a rigid stick set. Thank is guys!

1
7 comments
2

Anything like Ghost Wire for Ethernet?

Is there anything like Ghost Wire for ethernet? Something super flat that I could paint over and be almost unnoticeable? Ideally it would be Cat 6.

2
7 comments
1

Running Ethernet and Cable in Condo - No Attic/Basement Access

I recently bought a condo and have been doing some renovations. In the master bedroom, the cable jack was in a really bad spot, so I wanted to add a new one. I realized that the closet wall is right up against the utility closet where the Fios ONT and router are located. The baseboards and flooring have not been finished yet, so it's a good time to run cable. Since I have no attic/basement access, I ran an ethernet and coaxial cable behind the baseboard (I cut a small channel) and up the wall. My problem is that I don't know how to run it into the closet without bending the cables too sharply. I've attached a picture, showing where the cables exit the wall. There is a small partition wall that I need to get around which would require two 90 bends. I'm wondering if I should get a spade bit and just drill a 1/2" hole straight through. I don't believe it's a supporting wall of any kind. I know this is probably a dumb question, but I have very limited experience running cables. I really appreciate any advice/suggestions.

https://s33.postimg.cc/74jolzipr/IMG_1300.jpg

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3 comments
3

Good career fit?

Hello, I applied for a Foreman position at a communication systems company and I have an interview in a few days. I have no experience in the field but I am currently working as a Carpenter Foreman for a local construction company. I’m trying to make the switch into something a little less physically demanding but still working with my hands quite a bit. I am detail oriented and eager to learn a new trade, just nervous about leading a crew in an industry without experience. I can read blueprints and have some experience with very basic low voltage lighting systems (deck and under cabinet lighting etc.). Any advice for the interview or on a career change in general to this field? Thanks.

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2 comments
3

DB25 Serial Connection

We have a CNC machine that has a DB25 female pin-out as a way to upload programs from a computer to the machine.

Seems only very old computers have the cable. Of course we don't have a older computer with the pinout.

Was wondering what solution we can figure out with a windows 7 laptop? Seems like there are some USB->DB25 cables out there but people say that do not work.

3
5 comments
2

Tool advice

I'm starting work as a network cable tech in a few weeks and will need to bring my own hand tools. I have the following

A punch down

Socket screwdriver

Needle nose plyers

Cable sheers

Cable stripper

Crimper

A hammer

So what other tools would you guys suggest?

2
9 comments
1

SCART + YPbPr output from Sky Box

Hello, new to this sub, looking for some clarity on SCART outputs producing a component/YPbPr signal.

I was under the impression that SCART could only carry composite or RGB video and was therefore limited to 480i/p. But reading the wikipedia page for SCART [https://en.wikipedia.org/wiki/SCART#High_definition] it notes that in some [rare] cases devices could output a 1080i/p signal through SCART by using YPbPr/component.

Would that mean it is a SCART on one end and 5 RCAs on the other - Red & White for L/R Audio + Green, Red and Blue for YPbPr - or could you have a cable with SCART on both ends that supports a 1080i/p signal?

Most SCART inputs seem to be limited to 480p so I'm doubting its the latter.

I had a bit of an argument about it today as I was sure SCART was limited to 480p and I'm eager to learn more about how it worked.

The person I was speaking to was outputting SCART from an older Sky Box and claims they get 1080i/p on the TV. I'm so confused :S.

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3

[Los Angeles] Hiring/Network Organization/Advice

Hi folks,

I know of a certain veterinary clinic in Glendale that needs to hire a proper professional who can do the following:

* Reorganize network closet

* Rewire patch panels

* Provide network recommendations

Potential (but not currently required):

* Provide standard I.T. support for their workstations/server

Anyone know of any professional groups/organizations/individuals you can recommend? Names, phone numbers, websites, etc.

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0

Contractor needed in San Francisco to clean up server racks

I have approx 8 server racks which have gotten out of hand. Many cables aren't labeled and they block airflow.

Any suggestions for contractors in San Francisco?

0
1 comment
1
Posted by
Does not work for Cable Leader!
13 days ago

Looking for advice on my first rack setup.

I am planning my first big rack install. I want to know if this is the right sub where I can get some advice? Just looking to have someone double check my build-out.

1
3 comments
0

What cable should I use for this?

https://imgur.com/a/zEuGEza

Tried to plug some USB type B on this and although it doesn't fall, feels too wobbly and the computer doesn't recognize it. Suggestions?

0
8 comments
0

Unreturned equipment fee?

I had RCN. Great service, but I had to move. My friend is going to return the cable box (ultra basic, no HD) and modem (50Kbs). However, she just had an emergency. If...she doesn’t return it on time, what is the fee I’ll be looking at? I understand that Comcast has crazy fees, but this is RCN, and after 5 years the equipment is more than covered by my rental fee.

0
1 comment
2

Is there a more elegant solution to my tv setup?

I’ve taken some advice and this is what I’ve come up with. It’s probably fine but I’m real obsessive and I was wondering if there’s a more elegant solution. As you can see one of my box shelves sticks out all the time. And PlayStation looks like it could probably overheat (although it’s never happened to me and I’ve probably had it in worse situations).

https://imgur.com/a/Zgtc8ye

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2 comments
1

Is this kind of setup possible?

Can you chain Videocard (RX 480, Displayport Female) = (Displayport Male to HDMI female) to (HDMI male to DVI-D male single-link) = Monitor(1920x1080@60Hz)? I need to connect to my old monitor, but my videocard doesn't have a DVI female/male connection.

1
4 comments
2

Where to get CISCO CBR8 cable crimpers

Where can one find some crimpers for mini RG59 cable?

2
2 comments
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