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Replace 200 amp breaker

\015 Change 200 amp breaker on square d panel\015

Answers :

If this is the Service Disconnect Switch or Main Switch for the panel, this job should probably left for an electrician to perform, as power should be shut off at the meter socket or at the roadside first. If this is not done, the work will be "hot".

Unlike most circuit breakers in electrical panels, Service Disconnect Switches and Main Switches have the power brought to the panel by entering terminal screws. Shutting the Main or Service Disconnect breaker off prevents the flow of current *into* the panel and other circuit breakers. The large wires that are connected to the terminal screws are LIVE, and will remain so until shut off *upstream*.

Working in a panel with two large diameter cables that do not move easily is a hazard and should not be done unless you are very familiar with this work - and of course, have shut the power off.

Please, reconsider doing this work yourself.
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