Cable sizes for electrical installations are determined by the load current. The load current is obtained from the manufactures nameplate that is on the device to be connected. The electrical code book states what the amp capacity (ampacity) for specific wire sizes will be.
Article 310.16 of the national electrical code
Electricians use the tables in the electrical code book.
The National Electric Code provides such information.
You do not have to calculate the wire diameter, the manufacturer of the wire determines what the diameter is going to be for the specific size and current carrying capacity.
These cable sizes can be calculated by going to the table, Allowable ampacities for not more that 3 copper conductors in a raceway or cable, in an electrical code book.
Article 310.16 of the national electrical code
Electricians use the tables in the electrical code book.
The National Electric Code provides such information.
You do not have to calculate the wire diameter, the manufacturer of the wire determines what the diameter is going to be for the specific size and current carrying capacity.
These cable sizes can be calculated by going to the table, Allowable ampacities for not more that 3 copper conductors in a raceway or cable, in an electrical code book.
4cx95mm aws which size of cable gland
Yes, you calculate the size of cable (wire) according to current of the connected load.
What size electrical cable do i need for a 9.8kw shower unit ?
You first find the connected amperage to the load. Then go the the electrical code book and look up that amperage and the wire size that is recommended. Then you look up the recommended size of a breaker to safely protect that wire.
how can i calculate copper cable to bus bar size e.g: 300mm2 cu/pvc/pvc cable, change in to bus bar size
To answer this question the size of the cable or the amperage of the load is needed to calculate the correct wire size and connectors to fit the cable.
To answer this question the voltage is needed.