ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
GFCI's pops in large numbers
by dsk - 10/21/21 02:03 AM
Need some info on Japanese outlets, 200V 15A
by andey - 10/20/21 08:05 AM
Wire sizing
by watersparkfalls - 10/19/21 07:27 AM
nec 110.3 (B)
by watersparkfalls - 10/19/21 07:09 AM
A 5-20(20a) receptacle is legal on a 15a circuit?
by libellis - 10/10/21 12:46 PM
New in the Gallery:
240/208 to a house
240/208 to a house
by wa2ise, October 9
Now you know.
Now you know.
by Tom_Horne, September 7
Who's Online Now
1 members (Scott35), 16 guests, and 18 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Page 1 of 3 1 2 3
#43353 10/11/04 04:10 PM
Joined: Feb 2004
Posts: 494
M
Member
Hi,
I need to calculate how many RG59's constitute 40% fill in a 2" conduit.

I am having trouble finding any reference for this.

I have been looking for OD dimensions but havent had much luck..

any suggestions or help is appreciated.

Mustang

#43354 10/11/04 04:15 PM
Joined: Aug 2003
Posts: 1,374
R
Moderator
I don't see where article 820 references conduit fill. I'm not sure that you are limited to 40% fill.


Ryan Jackson,
Salt Lake City
#43355 10/11/04 04:20 PM
Joined: Apr 2002
Posts: 7,282
Likes: 3
Member
Mustang:
Other than doing it the 'old fashioned way (measure the diameter & do the math) I can't put my finger on anything.

Did you try the mfg????

Venturing a guesstimate.....coax is visually 'close' to #4 or #6 THHN????

John


John
#43356 10/11/04 04:23 PM
Joined: Feb 2004
Posts: 494
M
Member
hi,
the 40% fill requirement is a client spec..i found out that RG59 is 7/16" in diameter. THIS IS SIAMESE CABLE.
So i guess i could just do a calculation just like for a regular ckt?

This is also a combo cable with 2 #18 awg installed with the RG59.

Thanks for the replies.

Mustang

[This message has been edited by mustangelectric (edited 11-01-2004).]

#43357 10/11/04 04:56 PM
Joined: Mar 2001
Posts: 333
S
Member
RG59 is only ΒΌ" OD.


Steve
#43358 10/11/04 05:47 PM
Joined: Feb 2004
Posts: 494
M
Member
hi,
thanks for the replies...take a look at the following document. it has some interesting information regarding rg59 conduit fill.
http://www.brownstown.com/downloads/conduit-fill_require_.pdf

i got my dimension information from here: http://www.engproducts.com/products.cfm?ID=318

Still not sure. This is a COMBO CABLE/ COAX/#18 AWG PAIR

That was the best I had found until now!

Thanks for the replies..

regards

Mustang

#43359 10/11/04 06:47 PM
Joined: Oct 2000
Posts: 2,722
Broom Pusher and
Member
Mustang;

Quote

This is a COMBO CABLE/ COAX/#18 AWG PAIR

This is "Technically" [Linked Image] known as "Siamese" or "Siamese Cable".

Installed apx. 100,000 KM of the stuff!

The PVC (CMR, Riser, etc.) type Jacketed Cable has a larger O.D. than the Plenum (CMP) type Jacketed Cable.
Also, the Plenum Rated stuff pulls through Conduits better, but costs 2× - 3× the $$$ of PVC (Riser) Cable.

Cable Manufacturers will have the O.D. displayed on their web sites.

Scott35

BTW, thanks for the links! Will check 'em out.


Scott " 35 " Thompson
Just Say NO To Green Eggs And Ham!
#43360 10/11/04 07:47 PM
Joined: Apr 2001
Posts: 507
G
Member
I am interested for the same information for Cat 5. I know I can calculate it from the tables given but I would like a chart for Cat 5 in emt if it is available.

thanks,
GJ

#43361 10/11/04 07:47 PM
Joined: May 2003
Posts: 2,876
E
e57 Offline
Member
The 40% fill req. is more of a TIA/EIA req. rather than NEC req.

If you do tele/data, or CATV etc. you may want to check these out. They are not all of the standard in it's actual format, but seeing that the go for $200 bucks each, these trunkated versions/explanations are just fine. Also very informative.....
http://web.anixter.com/Anixter/anixter.nsf/Standards?OpenForm

--------------------------------
Just looked at them again, the pages have changed, they used to have a lot more information on them before.




[This message has been edited by e57 (edited 10-11-2004).]


Mark Heller
"Well - I oughta....." -Jackie Gleason
#43362 10/11/04 09:21 PM
Joined: Feb 2004
Posts: 494
M
Member
Hi,
I thought the Siamese cable was a FLAT type cable with the conductors run side by side more like a UF cable?

I thought the COMBO cable was a ROUND cable assy that is more like a MULTI COND TRAY CABLE?

I am working on a project where there are a lot of video cameras. Is RG59 not an outdated cable? It seems that all I ever hear about anymore is RG6..Is RG6 more digital friendly?

Thanks for the replies..very interesting information...you never know when this type work comes along..and it helps to stay informed.

regards

Mustang

Page 1 of 3 1 2 3

Link Copied to Clipboard
Featured:

Tools for Electricians
Tools for Electricians
 

* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
Theelectrikid
Theelectrikid
Levittown, PA
Posts: 811
Joined: April 2004
Top Posters(30 Days)
dsk 6
Popular Topics(Views)
284,723 Are you busy
217,349 Re: Forum
203,700 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5