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#103770 - 11/24/02 10:58 PM CATV power unit with a gas line?  
Joe Tedesco  Offline
Member
Joined: Oct 2000
Posts: 2,749
Boston, Massachusetts USA
[Linked Image]
Joe-

For the discussion group:

Now this is one I've never seen before. A CATV power unit with a gas line
connected! I'm assuming that there is some sort of engine or thermocouple
device in the cabinet that provides stand-by power to the CATV system.
Perhaps in this area there are extended power outages that require more time
than batteries would provide. Extra funny if you consider that I found this
box almost within walking distance of Hoover Dam, Boulder, NV! Anybody know
what sort of power device is in the cabinet?

Bob

[This message has been edited by Joe Tedesco (edited 11-24-2002).]


Joe Tedesco, NEC Consultant

2017 / 2014 NEC & Related Books and Study Guides

#103771 - 11/24/02 11:06 PM Re: CATV power unit with a gas line?  
NJwirenut  Offline
Member
Joined: Sep 2001
Posts: 806
Bergen County, NJ
Natural gas powered generator set. Used in place of battery banks in areas with unreliable electrical power.
http://www.alpha.com/products/level_3.php?product_id=29&product_market=1


#103772 - 11/25/02 12:01 AM Re: CATV power unit with a gas line?  
lwinter31  Offline
Member
Joined: Nov 2002
Posts: 40
Texas
Wouldn't 250-104 (3) x(b) [NEC 1999] apply here. I don't see a ground/bonding clamp.

[This message has been edited by lwinter31 (edited 11-24-2002).]


#103773 - 11/25/02 02:48 PM Re: CATV power unit with a gas line?  
j a harrison  Offline
Member
Joined: May 2002
Posts: 106
southampton, england
that is a very good idea, but i see there is no earth bonding between the gas supply andd the CATV cabinate,
also were is the physical protection to the gas meter, surely this is required ???


#103774 - 11/25/02 03:06 PM Re: CATV power unit with a gas line?  
Bjarney  Offline
Moderator
Joined: Apr 2002
Posts: 2,527
West-Southern Inner-Northeast ...
I believe the yellow bollards are intended for physical protection.

Kohler [and likely others] makes a nice 48VDC 'COM-6' genset series for backup of telecomm ["SLC-96"] subscriber-carrier huts in more remote areas.




[This message has been edited by Bjarney (edited 11-25-2002).]


#103775 - 11/25/02 07:31 PM Re: CATV power unit with a gas line?  
Electric Eagle  Offline
Member
Joined: Apr 2002
Posts: 914
Alpharetta, GA
Georgia Power has these things all over Atlanta, but usually larger. They are called "peakers". On high demand days these kick on to make up the diference to avoid brown outs. I don't see anything here to indicate that this is CATV, but I'll take your word for it. I guess the cable company wants to insure reliability if the power goes out.


#103776 - 11/26/02 03:23 PM Re: CATV power unit with a gas line?  
Pearlfish  Offline
Member
Joined: Sep 2002
Posts: 83
Chicago Ridge, Il, USA
Ummm I have a silly question.

If the power goes out, how are you supposed to watch cable television?


#103777 - 11/26/02 03:39 PM Re: CATV power unit with a gas line?  
j a harrison  Offline
Member
Joined: May 2002
Posts: 106
southampton, england
its not a silly question, but is a funny one i had quite a chuckle over that one,

but seriously, how are you sopposed to watch TV with a power outage.

The only thing i can suggest is as we knoe the CATV companies will ensure there programs can be watched, why dont we get ourselves some gas gensets for our residences then.


#103778 - 11/26/02 04:39 PM Re: CATV power unit with a gas line?  
ftl-eric  Offline
Member
Joined: Jan 2002
Posts: 15
Schererville, IN
> If the power goes out, how are you supposed to watch cable television?

We can't watch TV but the cable company has two main reason for the genset:

To feed any downstream customers/equipment that do have power.

To keep the temperature right if it is a controlled environment enclosure. Some of the electronics in these units can not withstand extreme cold and heat.


#103779 - 11/26/02 08:01 PM Re: CATV power unit with a gas line?  
Electric Eagle  Offline
Member
Joined: Apr 2002
Posts: 914
Alpharetta, GA
Cable's not just for TV anymore!
I use a cable modem for the computer and if I had a good enough UPS or a laptop computer, I could surf the net or even watch TV on the computer without power.


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