Maximum Power Capacity for 5x10mm Ground Cable in 3 Phase Motors: From 12kW to 50kW Expansion

Hello electricians. I have a question.
What is the maximum power that can be drawn through a 5x10mm ground cable in 3 phases (three-phase motors)?

When there was no plant yet, I had a power allocation of 12kW, after starting the company, I increased the power allocation to 22kW and a year later to 32kW. Now I am thinking about an allocation of 50kW, because it is known that there are more and more machines and the plant is expanding.

Now the question is, will a 5x10mm earth cable withstand 50kW (3 phase motors)? What is the maximum safe continuous power for such a cable?

I know that I have 3x63A / 400v protection in the meter box.

Hello.
What is the length of this cable?

The cable length is approximately 30m, measured in steps. The cable is copper.

35kW maks.

GBW wrote:

35kW max.

In short, NOT TRUE .
Long-term current-carrying capacity is not the only criterion for selecting the cable cross-section, and in this case the power limit is 28KW - please refer to the PN-IEC 60364-5-523 standard.

In addition, one must not forget about the selection of the cross-section due to the permissible voltage drop.
Here, in turn, according to the SEP-E-002 standard, the voltage drop in the receiving circuits from the electricity meter to the receiver connection point should not exceed 3%, while the total voltage drop from the electrical installation connector to the terminals of any receiver should not exceed 4%. and the voltage drops in the internal supply line should not exceed 0.5% in this case.
For the current power allocation (32KW), the decrease in WLZ is 1.05%, which is 2 times the permissible value.

With a power allocation of 32kW, the 5x10mm cable so far withstands and does not heat up, or it only gets lukewarm with all machines running. I will not be up to anything for now. I consider the topic closed.