Can anyone give me the answer and source for this question on current carrying capacity Electrical Advice

Can anyone give me the answer and source for this question on current carrying capacity Discussion ThreadCan anyone give me the answer and source for this question on current carrying capacity Electrical Advice

Hello I just need to know the correct order and a source which shows me that it is that order please

When calculating the current carrying capacity

Is the correct order

Ib ≤ In ≤ It ≤ Iz

Or

Ib ≤ In ≤ Iz ≤ It

Niceone

Can anyone give me the answer and source for this question on current carrying capacity for the original thread on Electricians Forums