Stubup Spacing

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NSmithIN

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What is the recommended center to center spacing for qty. (3) 4" rigid PVC conduits. The conduits will be embedded in concrete slab for a bottom entry into an 800A panelboard
 
We just turned up what was on chair rails. We might have squeezed the outer pipes inward.

Just be sure to get a cut sheet of the panel, the last panel I did - C/H @ 800 Amps
was or at least seemed very small (width wise) and tight (depth wise).

It was all to Code, but 800 gear seems to be the receiver of bigger wire at times.

Frankly, I wasn't use to working with CH at all!
 
NSmithIN said:
What is the recommended center to center spacing for qty. (3) 4" rigid PVC conduits. The conduits will be embedded in concrete slab for a bottom entry into an 800A panelboard
Click to expand...

i'd put them close enough together that they all fit in the gear.

i just got this put together today, with a plywood template cut
to the exact size of the interior frame of the 800 amp bottom fed gear,
so i know it'll work.

floated a 4' X 10' 2x12 form above the hole, for the housekeeping pad.
cut an opening in a sheet of plywood, put it on the form... now i have
to cut all the pipes off 1" above the plywood, and put bell mouths on
them.... all the 4" conduit has 500 MCM going into it. long runs, lotta
voltage drop. i'll 2 sack sand slurry the entire hole to the bottom of
the housekeeping pad, the pour the pad. i don't want this settling later.

 
infinity said:
How do you like that Eaton gear?
Click to expand...

sokay... this is the second job i've used the stuff on... first job had a dozen
3R panels, and 1,200 amp gear, and the stuff is pretty well finished, and
not expensive beyond all reason... my wholesale house sells a lot of it.

i can't find any fault with it to speak of.

had to pull the guts out the top of the gear and tuck them in the conex
until after the wire is pulled and laced.. there isn't much room between the
bottom of the buss, and the slab. it's cozy, and i packed too many marshmallows
in the piggy bank. it's a 1,200 amp buss, with an adjustable main.

specs called for 800 amps of 480, with provision for expansion, so i bumped everything to
1,200 amp, and it's fed off a 800 amp breaker in the metering section nearby,
that has a 1,200 amp case with 800 amp trip, and 1,200 amp vertical buss on
2,000 amp horizontal bus, so upgrading is just changing out the trip unit.
 
Fulthrotl said:
sokay... this is the second job i've used the stuff on... first job had a dozen
3R panels, and 1,200 amp gear, and the stuff is pretty well finished, and
not expensive beyond all reason... my wholesale house sells a lot of it.

i can't find any fault with it to speak of.
Click to expand...

I'm only asking because I'm current installing 3-4000 amp services with all Eaton equipment and putting the bus links in between the sections isn't fun. :roll:

I do agree that it's pretty nice stuff but with a few caveats.
 
infinity said:
I'm only asking because I'm current installing 3-4000 amp services with all Eaton equipment and putting the bus links in between the sections isn't fun. :roll:

I do agree that it's pretty nice stuff but with a few caveats.
Click to expand...

the links between the main and the distribution section were ok on this one,
but the gear was accessible from the back, so i could pull covers, etc.
it helps when you can cheat.

jacking it together was 4 pieces of running thread, thru the back corner pieces,
sucking it together a bit at a time. put a little tension on one, so when you wiggle
the buss ties, they interleave.... but if you had a stack of buss ties, and no back
access, and had to put the sections tight together before connecting the buss work,
thinking back on it, it'd suck pretty hard.

ya shoulda put it together in the parking lot.... :p
 
I realize that you had caps on your pipe.

You had to bring them down to finish floor elevation, which I assume was
at the elevation of the ply board, did you have a sub pour and then add skim
coat of concreteat the bell end?

Or did you just level and cut for the bell end and add bell and cover/close off for
pour?
 
Fulthrotl said:
sokay... this is the second job i've used the stuff on... first job had a dozen
3R panels, and 1,200 amp gear, and the stuff is pretty well finished, and
not expensive beyond all reason... my wholesale house sells a lot of it.

i can't find any fault with it to speak of.

had to pull the guts out the top of the gear and tuck them in the conex
until after the wire is pulled and laced.. there isn't much room between the
bottom of the buss, and the slab. it's cozy, and i packed too many marshmallows
in the piggy bank. it's a 1,200 amp buss, with an adjustable main.

specs called for 800 amps of 480, with provision for expansion, so i bumped everything to
1,200 amp, and it's fed off a 800 amp breaker in the metering section nearby,
that has a 1,200 amp case with 800 amp trip, and 1,200 amp vertical buss on
2,000 amp horizontal bus, so upgrading is just changing out the trip unit.
Click to expand...

I feel your pain. This Eaton gear was a nightmare to connect the buss. The rear is not accessible.
 
infinity said:
I'm only asking because I'm current installing 3-4000 amp services with all Eaton equipment and putting the bus links in between the sections isn't fun. :roll:

I do agree that it's pretty nice stuff but with a few caveats.
Click to expand...

Rob, my last post was suppose to reply to yours...sleepy...but ya this Eaton gear is terrible to buss together.
 

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