Ev chargers Pvc underground pipe fill

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Fordean

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Location
New Jersey
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Electrical Contractor
48 amp load 208 v pvc
What would be allowable amount of conductors in pvc And what size
Since all loads can possibly ( and should be) considered fully loaded
 
Forgot to mention 1 tower charger 2 ports 48 amos per 11.5 kw( each ????) How many per pipe and fill
 
I no the answer I just like to share 9 conductors max Per conduit for deration Load 125 % why dont u contribute instead of what moderators call going off topic your typical example

I see that the power being needed is highly unlikely to be fulfilled and a new path of design needscto be looked at Example i have 2 posts 11.5 kw each port X2 23 kw this is only 4 cars What do u suggest we do in future will the other 26 parking spots Maybe add a nuclear reactor to each building?
 
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Fordean, can you explain further please.
Fordean said:
I no the answer I just like to share 9 conductors max Per conduit for deration Load 125 % why dont u contribute instead of what moderators call going off topic your typical example

I see that the power being needed is highly unlikely to be fulfilled and a new path of design needscto be looked at Example i have 2 posts 11.5 kw each port X2 23 kw this is only 4 cars What do u suggest we do in future will the other 26 parking spots Maybe add a nuclear reactor to each building?
Click to expand...
 
Fordean said:
I no the answer I just like to share 9 conductors max Per conduit for deration Load 125 % why dont u contribute instead of what moderators call going off topic your typical example

I see that the power being needed is highly unlikely to be fulfilled and a new path of design needs to be looked at Example i have 2 posts 11.5 kw each port X2 23 kw this is only 4 cars What do u suggest we do in future will the other 26 parking spots Maybe add a nuclear reactor to each building?
Click to expand...
I think his point might be how you get 11.5 kW with 208 and 48. And are you suggesting 23 kW for 2 or 4 EVs? It doesn't fit for either.
 
Fordean said:
I no the answer I just like to share 9 conductors max Per conduit for deration Load 125 % why dont u contribute instead of what moderators call going off topic your typical example

I see that the power being needed is highly unlikely to be fulfilled and a new path of design needscto be looked at Example i have 2 posts 11.5 kw each port X2 23 kw this is only 4 cars What do u suggest we do in future will the other 26 parking spots Maybe add a nuclear reactor to each building?
Click to expand...
There is no where near enough information to give a valid code compliant answer. In addition, there is no limit on the number of current carrying conductors if you are willing to pay for much larger conductor sizes. Nine is used as a common limit, because the ampacity adjustment for 10 conductors is 50%.
I have done projects where I had 18 current carrying conductors in the raceway because the installation costs of installing multiple raceways far exceeded the cost of using oversized conductors.
 
Tulsa Electrician said:
Fordean, can you
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Tulsa Electrician said:
Fordean, can you explain further please.
Click to expand...
I only asked about pipe fills Got off topic
But we are in a process of high demands I figure 4 11.5 kw wiring per conduit is max unless we upsize for 50 % deration We have to install only 4 of these Remove sidewalk and replace looking to design for the other 26 spots In future and leave spares under last slab of sidewalk
It just seems a lot of power required
Also, Each wire will be fully loaded potentially at the same time Underground will help But the first 10 feet is above ground and in the sun I just view these chargers as a good idea But just like to hear what others opinions. This lot of building has 50 parking spots on north side And 25 on south side Drmand seems to be ridiculous Unless smart technology comes into distribution
 
don_resqcapt19 said:
There is no where near enough information to give a valid code compliant answer. In addition, there is no limit on the number of current carrying conductors if you are willing to pay for much larger conductor sizes. Nine is used as a common limit, because the ampacity adjustment for 10 conductors is 50%.
I have done projects where I had 18 current carrying conductors in the raceway because the installation costs of installing multiple raceways far exceeded the cost of using oversized conductors.
Click to expand...
Were these conductors capable of being fully loaded at the same time v i see these installs being that
 
GeorgeB said:
I think his point might be how you get 11.5 kW with 208 and 48. And are you suggesting 23 kW for 2 or 4 EVs? It doesn't fit for either.
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I believe with specs not in front of me As selectable 11.5 kw @ 48 a 208 per port Two ports per post Can be limited to ( i think) 9.5 kw 40 amps 208 I figure go for the larger kw And shorter charge times
 
It sounds like your project is not engineered and you are trying to make it work or engineer it on the go.

Did the customer give you plans?

What you say is confusing.
 
I think I understand what your asking now. Pipe fill requirements and additional pipes versus derate for conductor size.

Don provided a good answer.

Keep in mind voltage drop as each run get longer. Size accordingly and don't forget about EGC.

Use a conductor that has 90c wet location for your derate.

You may look into a feeder set up to reduce over all conductor cost. Versus all brach runs each getting longer as you go. Maybe four feeders than branch.

That will help with VD as well
 
Ponchik said:
It sounds like your project is not engineered and you are trying to make it work or engineer it on the go.

Did the customer give you plans?

What you say is confusing.
Click to expand...
Sorry to put a confusing post I have attached CA registered vehicles Since uoir from CA And are out sourcing petral vehicles What will 26,000,000 million vehicles do to a grid I love EV Just doing the math
 

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