Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Electrical

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 06-04-2012, 04:43 PM   #16
E2 Electrician
 
stickboy1375's Avatar
 
Join Date: Apr 2012
Location: Litchfield, CT
Posts: 4,690
Share |
Default

Starting down the big hill




No sand installed in trench? We always run 3 conduits; power, phone, catv...

stickboy1375 is offline   Reply With Quote
Old 06-04-2012, 04:49 PM   #17
Member
 
Ravenworks's Avatar
 
Join Date: Oct 2010
Location: NE Ohio
Posts: 598
Default

Starting down the big hill


Quote:
Originally Posted by stickboy1375 View Post

No sand installed in trench? We always run 3 conduits; power, phone, catv...
And a spare
__________________
U.S.M.C. "80-84" E.O.D. 1369
Ravenworks is offline   Reply With Quote
Old 06-04-2012, 05:02 PM   #18
Lic Electrical Inspector
 
electures's Avatar
 
Join Date: Dec 2009
Location: The Great Police State of New Jersey
Posts: 1,617
Default

Starting down the big hill


I keep thinking 900 ft. Wow. That wire lube at the beginning won't be there at 150 ft. Then he won't need a tugger, he will need a tanker. I really think he needs a few manholes. Just sayin
__________________
All responses based on the 2011 NEC.
If you live in New Jersey click here. All other states click here.
Please check with local, county and state officials as laws may vary.
Sizing motors here. Online motor calculator here. Online calculators here.
electures is offline   Reply With Quote
Old 06-04-2012, 05:22 PM   #19
Semi-Pro Electro-Geek
 
Join Date: Jul 2009
Location: Arizona, USA
Posts: 2,531
Default

Starting down the big hill


Quote:
Originally Posted by electures View Post
I keep thinking 900 ft. Wow. That wire lube at the beginning won't be there at 150 ft. Then he won't need a tugger, he will need a tanker. I really think he needs a few manholes. Just sayin
I think he needs to grab a beer and watch the POCO guys pull in their primary. His job's done, I think.
mpoulton is offline   Reply With Quote
The Following User Says Thank You to mpoulton For This Useful Post:
stickboy1375 (06-04-2012)
Old 06-04-2012, 06:36 PM   #20
Electrical Contractor
 
rrolleston's Avatar
 
Join Date: Oct 2011
Location: Granville, NY
Posts: 1,941
Send a message via AIM to rrolleston Send a message via Yahoo to rrolleston
Default

Starting down the big hill


Quote:
Originally Posted by stickboy1375 View Post
No sand installed in trench? We always run 3 conduits; power, phone, catv...
Usually one oversized conduit is plenty for communications cable's with an extra pull string left.

Quote:
Originally Posted by mpoulton View Post
I think he needs to grab a beer and watch the POCO guys pull in their primary. His job's done, I think.
Don't they require a pull string to get their pulling cable in there?
__________________
With Electricity there is the right way to do it and the dead way. Just because it works does not make it safe.
rrolleston is offline   Reply With Quote
Old 06-04-2012, 06:41 PM   #21
E2 Electrician
 
stickboy1375's Avatar
 
Join Date: Apr 2012
Location: Litchfield, CT
Posts: 4,690
Default

Starting down the big hill


Quote:
Originally Posted by rrolleston View Post
Usually one oversized conduit is plenty for communications cable's with an extra pull string left.
Absolutely not! each utility gets their own conduit. Besides, how are you not going to burn the existing utilities wire, if both are not pulled at once? Which is clearly not going to happen.

Quote:
Originally Posted by rrolleston View Post
Don't they require a pull string to get their pulling cable in there?
Around my area, yes.
stickboy1375 is offline   Reply With Quote
Old 06-04-2012, 07:47 PM   #22
Member
 
Join Date: Nov 2011
Location: Md/Pa
Posts: 943
Default

Starting down the big hill


The total length is 1800' and POCO will be pulling the 3 different runs while a chug a beer or 2. It's a single cable, more like a coax and I don't know the size. Maybe 2AL? That's what the drawing said. I have heard that on long downhill pulls the weight of the wire can overtake the friction and cause it to self feed resulting in a big mess at the bottom but I'm sure they know what they are doing. I said 7.2kv but that might not be accurate. The engineer told me 14 something but that may be line to line and not line to ground. Any ideas which voltage sounds more correct?

3" conduit for the power and 2" for a tiny 1/4" diameter phone cable. Overkill yes, but 2" DB60 was just pennies more than the smaller sizes of schedule 40 and it came in 20' sticks as with the 3". No chance for cable unless I run a monster feed and install a few amps along the way. Twisted pair DSL looks to be my best bet for internet maybe?? The POCO won’t pull unless it is backfilled. I guess they know about the static?

900’ is the shortest distance possible as there is no access for the trucks. She told me 1000’ is about the max but this is a fairly straight run although there is another creek I have to get through at the bottom of this hill. The only 90’s are the 2 sweeps coming out of the ground at the junction boxes. I chickened out trying to blow a string through it after I was done as I was having nightmares and panic attacks (slight exaggeration) about not being able to get something through after it was all buried. Instead, I have been running the rope and phone line as I lay the sticks. I have a 25’ leader of 12 gauge THHN so the rope and phone wire is staying out of the wet glue but it is a PITA dealing with the pull wire while trying to apply glue to the joints. There is another 500’ run through 2 more creeks and swampy wet lands that I did first and the conduit is probably (guessing) filled with water. It would require a large tow behind compressor to evacuate the water so I could blow a string through so that is another reason I decided to run the rope and phone cable while I installed the conduit.

Starting down the big hill-p6260066.jpg


I'm also running a pull string through the phone conduit just because.

Starting down the big hill-pb190017.jpg


High tech rope holder on the 500' run.

Starting down the big hill-p8210021.jpg

Last edited by zappa; 06-04-2012 at 09:48 PM.
zappa is online now   Reply With Quote
Old 06-04-2012, 11:08 PM   #23
" Euro " electrician
 
frenchelectrican's Avatar
 
Join Date: Apr 2006
Location: WI & France { in France for now }
Posts: 5,369
Default

Starting down the big hill


Quote:
Originally Posted by zappa View Post
The total length is 1800' and POCO will be pulling the 3 different runs while a chug a beer or 2. It's a single cable, more like a coax and I don't know the size. Maybe 2AL? That's what the drawing said. I have heard that on long downhill pulls the weight of the wire can overtake the friction and cause it to self feed resulting in a big mess at the bottom but I'm sure they know what they are doing. I said 7.2kv but that might not be accurate. The engineer told me 14 something but that may be line to line and not line to ground. Any ideas which voltage sounds more correct?

[]
The POCO will make the final call which voltage they will use and I know the 7.2 KV and 13.8 or 14.2 KV is common one and they can be either line to line or line to netural depending on which grid they will tie to it.

With that distance more likey they will use armored alum cable simauir to our SWA cable which we used in France or they will use contrancted netural with either copper or alum cable so it will look pretty big the acutal size will depending on what they will use but for sure it will be about a inch diam no question asked

And with long run downhill we always like to run from the top and work it way down and yeah if not carefull it can overrun and can make a mess that why when we do the downhill pull we rig a drum brake or spool brake to slow it down ( the worst is vertical runs that is complety differnt story I will save it for other time )

With that long a run the last time I have 200 meter run ( about 650 feet ) I have use almost 50 liter worth of wirelube on that and when near end of run just stop ( or reduce it ) feeding the wirelube due it will actually fly pretty fast once the gravity take over.

Let the POCO worry about that when they pull the cable in the conduit they will know excat what to do with it.

Yeah expect to see some water in the conduit that is typical but you will need a tow behind air compressor to blow it out but let me give you a serious warning do not open the air valve super fast otherwise you will blow the plastique pipe apart so instead of that just ramp it up slow then crank it up and make sure there is no one standing on the opposite end of that conduit in case water or debries can fly out.

Bon Chance with your project.

Merci,
Marc
__________________
The answer will be based on NEC ( National Electrical code ) or CEC ( Cananda Electrical code ) or ECF ( Electrique Code France )
frenchelectrican is offline   Reply With Quote
The Following 2 Users Say Thank You to frenchelectrican For This Useful Post:
mpoulton (06-05-2012), PaliBob (06-07-2012)
Old 06-05-2012, 01:50 AM   #24
Semi-Pro Electro-Geek
 
Join Date: Jul 2009
Location: Arizona, USA
Posts: 2,531
Default

Starting down the big hill


Quote:
Originally Posted by frenchelectrican View Post
they will use contrancted netural with either copper or alum cable so it will look pretty big
"Concentric neutral" - the big coaxial-type primary cable with the sprial-wound neutral shield to protect hapless diggers. [To use a word you taught me on here, contrancted is conneries ]
mpoulton is offline   Reply With Quote
The Following User Says Thank You to mpoulton For This Useful Post:
frenchelectrican (06-05-2012)
Old 06-05-2012, 06:21 AM   #25
Member
 
Julius793's Avatar
 
Join Date: Dec 2011
Location: New york
Posts: 1,053
Default

Starting down the big hill


my poco phases to phase is 13.2kv
__________________
Electricity will kill you if you give it a chance

Last edited by Julius793; 06-05-2012 at 06:24 AM.
Julius793 is offline   Reply With Quote
Old 06-05-2012, 01:26 PM   #26
Electrical Contractor
 
rrolleston's Avatar
 
Join Date: Oct 2011
Location: Granville, NY
Posts: 1,941
Send a message via AIM to rrolleston Send a message via Yahoo to rrolleston
Default

Starting down the big hill


I think you can run RG-11 up to 1500' withought much loss but if you don't have any lines near you that won't help because of your 1800' run. One great thing is once it's all done most of this is their responsability.

Really wish I oversized my cable and phone wire conduit but I did not know they were going to drop off 6 pair 20g phone and RG-11 both cables were 3/8" thick. What a pull that was in the 3/4" conduit. Lots of lube and they went in though.
__________________
With Electricity there is the right way to do it and the dead way. Just because it works does not make it safe.
rrolleston is offline   Reply With Quote
Old 06-05-2012, 02:01 PM   #27
Tool Geek
 
PaliBob's Avatar
 
Join Date: Jun 2008
Location: Pacific Palisades CA
Posts: 2,488
Default

Starting down the big hill


Quote:
Originally Posted by zappa View Post
It's for 7.2kv primary......will post more info later
Please do, and thanks for posting the pics
__________________
Disclaimer
& Stay Safe
.....Bob Lavery
PaliBob is offline   Reply With Quote
Old 06-05-2012, 04:55 PM   #28
Electrical Contractor
 
rrolleston's Avatar
 
Join Date: Oct 2011
Location: Granville, NY
Posts: 1,941
Send a message via AIM to rrolleston Send a message via Yahoo to rrolleston
Default

Starting down the big hill


Are you going with a pad mount transformer or a pole mounted transformer. What do they do with the cable between pull points install a pull box with manhole cover?
__________________
With Electricity there is the right way to do it and the dead way. Just because it works does not make it safe.
rrolleston is offline   Reply With Quote
Old 06-05-2012, 05:21 PM   #29
Member
 
Join Date: Mar 2007
Location: Eighty Four, Pa.15330
Posts: 1,215
Default

Starting down the big hill


The furthest I pulled a piston with a greenlee vac was 1450 feet in 2- 4" pvc conduits.
bobelectric is offline   Reply With Quote
Old 06-05-2012, 05:23 PM   #30
E2 Electrician
 
stickboy1375's Avatar
 
Join Date: Apr 2012
Location: Litchfield, CT
Posts: 4,690
Default

Starting down the big hill


Quote:
Originally Posted by bobelectric View Post
The furthest I pulled a piston with a greenlee vac was 1450 feet in 2- 4" pvc conduits.
what type of string did you pull behind it? and 1450' is just ridiculous without a pull box.

stickboy1375 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Outside stairs on dirt hill Sporty64 Carpentry 1 11-19-2011 08:41 PM
Best Way to Catch Water Coming Down a Hill? jonathan03 Landscaping & Lawn Care 9 05-11-2011 02:05 PM
how to build a single phase induction motor sashman Electrical 3 03-31-2011 07:18 AM
Timecutter 16:42z trouble starting and now stopped starting jackdoldno7 Landscaping & Lawn Care 0 09-10-2010 11:43 AM
Deck post on a hill kellyandsarah Building & Construction 2 07-12-2009 11:50 AM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.