Wiring up a network - FAIL

[erkishhorde]

How are you setting it up? When I helped my dad run cables for an office one summer we made a bunch of cables w/ the regular ends and the just ran them through the ceiling and whatnot and plugged them into the back of the outlets. If you're doing this, did you make sure to test all the cables before you installed them? If you did and they worked before you ran them through the walls, you might have crimped it somewhere.

[ducatiz]

Dp-  yep 48vo same as what comes in over your 24awg pots wires.  No more than about 1A@48vdc.  Just enough to power a small device such as a usb charger or laptop.  Most are 1A@12vdc or thereabouts.

[ducatiz]

10awg for 12vdc?  Wtf?

I ran wiring in my garage 220v and 50A over 10awg (2phase).

12vdc on 10g is wasteful

[ducpainter]

10awg for 12vdc?  Wtf?

I ran wiring in my garage 220v and 50A over 10awg (2phase).

12vdc on 10g is wasteful

That's what I said when I was trying to make connections.

It's not if you consider that amperage rises as voltage drops and this was a parallel system with remote batteries. P=IE...E=IR

You under wired your garage. 10 awg is for a 30 amp circuit. By code it should have been 8 awg.

I'll notify your code enforcement officer for you.

[ducatiz]

25A over each wire.

15ft of wire.

It'll do

[ducpainter]

25A over each wire.

15ft of wire.

It'll do

That isn't the way 240 works.

If your breaker is a double pole...each leg is capable of 50 amps.

You have his number?

[ducatiz]

Its running of two separate breakers.  I split out one 110 outlet off each hot wire. And its not 50 it is 40 or 20 each.  I rarely run more than one tool at a time and only the welder is 220v and that's only 25A.  I want to put in a bigger air comp but ill run another 220 for that

[ducpainter]

Its running of two separate breakers.  I split out one 110 outlet off each hot wire. And its not 50 it is 40 or 20 each.  I rarely run more than one tool at a time and only the welder is 220v and that's only 25A.  I want to put in a bigger air comp but ill run another 220 for that

I've done reverse. A 120 circuit off of one leg of a 2 pole breaker. It works.

Completely illegal.

Good thing we don't have electricians licenses.

[ducatiz]

We don need no steenkeeng badgers

[mookieo2]

Just look at the connectors and make sure the wires are all the way up in the connector. Triple check this. You can pick up a basic tester real cheap. Just to test continuity of the pairs for like $10.

You would have been fine running cat 5e you're not going to see a benefit from 6. The tolerances are so tight that you will not be able to punch it down correctly. You can still run Gigabit off of it and its a hell of a lot cheaper. I've had plenty of electricians run wires next to our huge bundles of cat5e and never had a noise problem. We always yell at them and tell them to keep a foot away but that never happens.

[ducpainter]

J<snip> I've had plenty of electricians run wires next to our huge bundles of cat5e and never had a noise problem. We always yell at them and tell them to keep a foot away but that never happens.

friggen electricians.

[mookieo2]

friggen electricians.

Yeh and they have the nerve to charge almost as much as us low voltage guys. 

[ducpainter]

Yeh and they have the nerve to charge almost as much as us low voltage guys. 

Can't tell them anything either.

Smartest guy on the jobsite...just ask him.

[mitt]

NEMA definitions:

5, 12, 24, 48, 120, 240, 277, 440, 480, 500, 600, 690, 1000V AC or DC is all "low voltage" in our business.  1kV to ~40kV is "medium voltage".  ~40kV to MV is "high voltage".


Cable size (AWG) is based on CURRENT, not voltage, and conductor material (aluminum or copper), and the method for terminating (lugs, clamps, ring terminals, etc).  Cable insulation is based on VOLTAGE and application temperature (60C, 75C, 90C etc).  Each AWG diameter size step is based on a ratio of current squared due to Ohmic heating (I^2*R*time).  


48V DC is the max for voltage you can run in a DC application that is considered low enough to be touch safe.  I have heard that 48v is even too high for some working standards, and more like 40Vdc is the max considered that people can work around without PPE.  Most DC devices run at 12 or 24VDC, so I am not sure why you would run 48Vdc on any wires inside your house.

[TAftonomos]

Isn't more always better ?

Talked with a cool dude at a computer shop today.  Gonna come out and check it out.  $80 an hour seems "reasonable" to me, as long as it doesn't take him an hour to make one cable up