AC 220v Single Phase Motor Control using relay
1.) Would it kill a relay if i use a 1HP 220v 8a single phase motor to drive a bridge forward,(it's about 1200 lbs not that sure yet though hehe)


A relay used to energize any motor must be rated for motor duty. It must be capable of handling the motor inrush current. It must be capable of disconnecting an inductive load. It must be capable of opening in the event that the motor is stalled. Knowing the weight is not the only requirement for determining the motor power rating. The friction load must be determined. The friction load includes the friction in the entire drive train including gears etc. used to reduce the speed. Gear losses can be as much as half the load, sometimes more. Not being sure is not a joking matter.


  2.) is there a diagram for forward reverse using a 2 channel relay?


The reversing connections for an AC motor depend on the motor design. Some are not reversible at all. The ones that are reversible require the reversing of the starting or auxiliary winding with respect to the main winding. Universal motors (commutator AC motors) require the reversing of the field with respect to the armature.