Cable size , service size, Ampere , voltage drop
Cable size , service size, Ampere , voltage drop
(OP)
Hi
I asked to move 3 phase transformer to new pole.
This 3 phase transformer is feeding apartment building from pole to underground service.
Currently this tx 3-50kva ,600/347 V, 4-4/0 Al.
they gave me the peak load on tx is 135 kva.
77 residents in apartment all 120/240. But i don't know the main Ampere going to building.
my new pole is meter or 240ft away from current location.
I don't know the service size (A) ampere in apartment.
so i don't know how to calculate voltage drop based on new distance.
What cable size should I use? and what is actual size Ampere in there?
I asked to move 3 phase transformer to new pole.
This 3 phase transformer is feeding apartment building from pole to underground service.
Currently this tx 3-50kva ,600/347 V, 4-4/0 Al.
they gave me the peak load on tx is 135 kva.
77 residents in apartment all 120/240. But i don't know the main Ampere going to building.
my new pole is meter or 240ft away from current location.
I don't know the service size (A) ampere in apartment.
so i don't know how to calculate voltage drop based on new distance.
What cable size should I use? and what is actual size Ampere in there?






RE: Cable size , service size, Ampere , voltage drop
RE: Cable size , service size, Ampere , voltage drop
xnuke
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RE: Cable size , service size, Ampere , voltage drop
Under the code that I am subject to, I must use the calculated demand load to calculate the voltage drop.
My code book has voltage drop tables and instructions on how to use them.
Bill
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"Why not the best?"
Jimmy Carter
RE: Cable size , service size, Ampere , voltage drop