whirlpool not whirling

was replacing the bulb in tub and had housing out. putting housing back in and it arched on drum. now it will not start

Here are your parts
http://www.appliancepartspros.com/partsearch/modelsearch.aspx?model=WED5200VQ1

First make sure the power to the unit is OK.

Try flipping the breaker off/on slowly a couple times. Sometimes you can loose half the line without actually tripping the breaker.
Check the voltage at the plug
L1 to L2 should be 240 volts
L1 to Neutral and L2 to Neutral, both should be 120 volts.
L1 to Neutral is what powers the motor.
If OK
Unplug the unit and check the wires at the terminal strip in the machine to make sure none are loose or burned out
If OK
Check the power at the terminal strip.
Do this with the heater off and on.
Be careful as 240 volts is lethal !!!

Thank You Denman!!!