- Location
- Massachusetts
They come in Nice patriotic colors as well !!!
It looks great but would get a red tag here.
Where are your bell ends or bushings?
Pulling (4) 500kcmil XHHW conductors through 4" diameter 40 PVC conduit?
- Thread starter rrc14
- Start date
- Status
It looks great but would get a red tag here.
Where are your bell ends or bushings?
could you please elaborate on this ?
i was going to ask why he would use 250's since he could go down at least a wire size, or did you just state this backwards ?
texassparky
Member
- Location
- Dallas / Ft. Worth
still at the supply house where they belong...PVC and it is not terminating to the transformer it is stubbed up into it. same as all the PVC in the bottom of the gear in pic 10...I don't recall ever putting bell ends on them like that.
But now sitting here thinking about it, I always do on MV cable ???:-?
But thanks for the appreciation of craftsmanship...for the "LOOKS" anyways.
- Location
- New Jersey
- Occupation
- Journeyman Electrician
- Location
- Massachusetts
PVC or not the NEC requires it. I can not give you the section right now.
It does look great. :smile:
For what it is worth we come up under transformers like that whenever we can.
texassparky
Member
- Location
- Dallas / Ft. Worth
Then that is an inspector that hasn't terminated much gear or any at all. You can only get so much cable trained in the make up area. especially with that many feeders. All book and no field, or as we call them in Texas, all Hat and no cattle !:smile:
texassparky
Member
- Location
- Dallas / Ft. Worth
I would be curious as to NEC reference if you come up with it. That job is in a town with a Top Notch, Johnny on the Spot, Cracker Jack Inspector that rarely misses anything. Maybe he was busy looking at all the pretty colors and missed the bell ends.
what about in POCO side of pad mount ? you put them there too, Bell ends that is ?
ack, packing em in one conduit, ok sorry = thnks
texassparky
Member
- Location
- Dallas / Ft. Worth
yes part F surely seems to be it, I always took that for terminating into those items but since it includes raceways too, I would guess you are correct....
Well learned something new again today !:smile:
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
Yes, it does.
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
That's what I meant; the OP made it clear he was talking about a single conduit.
You're correct that more conductors of a given total area have a greater ampacity.
- Location
- Massachusetts
Actually yes and no.
I know 300.4 off the top of my head, the section I can not remember is in the Article for PVC conduit and is in addition to 300.4
rrc14
Member
- Location
- Anchorage, AK
- Occupation
- Engineer
Hey Don, is your pull calc software part of a electrical design software package or a spreadsheet? I'd like to get my hands on software that will figure out the pulling force required to install conductors in various size conduits. What is the name of the software you use?
Thanks,
- Location
- Illinois
- Occupation
- retired electrician
The software is Pull-Planner from PolyWater. Mine is an older version of what they now have, not sure how much difference there is between my version and the new version.
There is an on line calculator here.
There is an on line calculator here.
short circuit faulted
Member
- Location
- Columbia SC
Transformer Conduit Entry & Gear Wiring - Simpl-Pull
Transformer Conduit Entry & Gear Wiring - Simpl-Pull
A. We have used the Simpl-Pull in both Aluminium and Copper - It is a great labor savings when you can parrell (sp) the conductors on one reel. (Normally in wide open spaces) Had a recent project where the length was 880' 2" and 2 90 GRS elbows with 3-250KCMIL & # 4 AL ground THHN (480V 3PH3W CKT) Superintendent used a quarter inch rope with tugger chained to front end of lull, which isn't exaclty what I had instructed but luckly for him it pulled without any problem.
B. In competive bid market we use that method of entry for all floor mounted dry type transformers as we can cut the costs of greenfield and connectors and save space. However the AHJ will not allow PVC to pentrate slab it must be transtioned with GRS with an aspaltum covering for conduit in contact with dirt or concrete.
C. Cables as dressed look outstanding!
D. For long or heavy pulls - Greenlee makes a cable feeding machine we purchased a used unit that more than paid for itself as it cut four men
men off cable pull. Finished a school project last year where four of the feeder run distances were at 800 feet drawing called for 3.5 with 3-350 1-250 N & 1/0 EGC (Pararell Feeds) - conduits were installed in building slab with less than 300 Degrees of bend and I kicked the conduit size up to 4" for a little wiggle room. Had no problems installing.
E. Seems to me planning for your pull would inculde approriate pulling wheels in manholes if possible - simple pull wire parrelled on the reels and at worst case pulling one direction and then having to pull back in other direction.
Have a great day all.
Steve
Transformer Conduit Entry & Gear Wiring - Simpl-Pull
A. We have used the Simpl-Pull in both Aluminium and Copper - It is a great labor savings when you can parrell (sp) the conductors on one reel. (Normally in wide open spaces) Had a recent project where the length was 880' 2" and 2 90 GRS elbows with 3-250KCMIL & # 4 AL ground THHN (480V 3PH3W CKT) Superintendent used a quarter inch rope with tugger chained to front end of lull, which isn't exaclty what I had instructed but luckly for him it pulled without any problem.
B. In competive bid market we use that method of entry for all floor mounted dry type transformers as we can cut the costs of greenfield and connectors and save space. However the AHJ will not allow PVC to pentrate slab it must be transtioned with GRS with an aspaltum covering for conduit in contact with dirt or concrete.
C. Cables as dressed look outstanding!
D. For long or heavy pulls - Greenlee makes a cable feeding machine we purchased a used unit that more than paid for itself as it cut four men
men off cable pull. Finished a school project last year where four of the feeder run distances were at 800 feet drawing called for 3.5 with 3-350 1-250 N & 1/0 EGC (Pararell Feeds) - conduits were installed in building slab with less than 300 Degrees of bend and I kicked the conduit size up to 4" for a little wiggle room. Had no problems installing.
E. Seems to me planning for your pull would inculde approriate pulling wheels in manholes if possible - simple pull wire parrelled on the reels and at worst case pulling one direction and then having to pull back in other direction.
Have a great day all.
Steve
- Status