How do you get 2 wires on AC out of phase by 180 degrees?

[James12345678]

Thanks

 

[NascentOxygen]

In future, please restate your question within your post, adding additional information to assist those who may wish to help you.

In answer to your question, you could take the two outputs of a centre-tapped transformer secondary. When one line peaks positively wrt the centre-tap, the other line peaks negatively.

At the foot of this page you can see listed some similar threads, and among these you'll find methods using active elements.