ECN Forum Forums General Topics of the Trade Non-US Electrical Systems & Trades 35mm 5 conductor cable distance to 50Kva xfromer

Gentlemen
I have an installation where i have a 125Amp MCCB to a 50Kva transformer. My cable size is 35MM. The distance of the conductor is approximately 300 feet. My question is. Is the 35MM(2/0 conductor of the right size for the distance of the cable run. Insight will be most appreciated.