208 years

Marcus Claudius Marcellus lived from about 268 BC to 208 BC. He was a Roman general and consul with several important military victories, including the conquest of Syracuse in 212 BC (during which Archimedes was killed) )

On three phase 208 volts one leg does not have the potential of 208 volts. It takes two legs to provide the 208 volts. The potential is across AB, BC and CA. Voltage to the grounded neutral A-N, B-N and C-N will produce a potential of 120 volts. In a wye configured secondary three phase four wire you have the potential of 120/208 volts.

208/10 = 20.8

208/100 = 2.08

208/1,000 = 0.208

60% of on 208 = 40% left of 208 = 208*40/100 = 83.2