How do I hook up two white wires and one black for a 13500 BTU A/C

Can you help us out, just a little bit, please?

You have 2 White conductors and one Black conductors, correct?

Where are you located, U.S.A. England, Germany?

These conductors originate where? What size conductor are we talking about? What size breaker is needed by the A/C unit?

Is the A/C unit a 240 Vac or must we guess :)

This is in an existing outlet? Uncommon colors. 240VAC? Answer Don's questions