This is a voltage drop question. To answer this question a voltage has to be stated. The higher the voltage to the circuit becomes the smaller the wire size needed. After a certain voltage point the wire size will remain constant and the voltage drop at the load will become smaller.
The size of grounding wire is based on the amperage output of the transformer. The voltage of the transformer needs to be stated. Without this voltage a calculation can not be made. Amps = Watts/Volts = 30000/?.
A 10 mm cable is most commonly used for a 500 KVA transformer, 240 volt, 3 phrase. The size of the wire that is used in a transformer is based on the voltage.
A 100 amp residential service requires a size #8 copper wire, it should be insulated in green.
Wire sizing of a feed conductor is based on the amperage that a device draws. To calculate amperage from KVA a voltage of the supply has to be stated. Without this voltage and whether the transformer is single or three phase an answer can not be given.
Service entrance wire should be AWG #3 copper.
You size it by the current required by the secondary, and the primary will be smaller wire.
The size of grounding wire is based on the amperage output of the transformer. The voltage of the transformer needs to be stated. Without this voltage a calculation can not be made. Amps = Watts/Volts = 30000/?.
A 10 mm cable is most commonly used for a 500 KVA transformer, 240 volt, 3 phrase. The size of the wire that is used in a transformer is based on the voltage.
Your service provider will give you that information The size will depend on: A) how close to the transformer are you. B) copper or aluminum C) Yes, you have a 400amp service but what will your actual peak amp usage be. D) Underground or overhead.
The recommended wire size for a 60 amp service is typically 6-gauge copper wire.
How to compute for the size of wire in the primary side of 2500 kVA transformer 34.5kV
The recommended copper wire size for a 100 amp service is typically 3 AWG (American Wire Gauge).
The recommended wire size for a 100 amp aluminum service is typically 2 AWG (American Wire Gauge).
The recommended wire size for a 200 amp service using aluminum wire is typically 2/0 AWG (American Wire Gauge).
The recommended service wire size for a residential electrical service upgrade is typically 2/0 copper or 4/0 aluminum.
The recommended aluminum wire size for a 200 amp service is typically 2/0 AWG.
The recommended wire size for a 100A service is typically 2 AWG copper or 1/0 AWG aluminum.