[BB_TX]

Use a voltmeter to periodically check your house line voltage and your shed line voltage. If you consistently get something above 130 vac on either or both hots then I would call the power company. Could be a problem with their transformer. A little plug in voltmeter would be handy plugged in where you could easily walk by and glance at it.

If you consistently read between 114-126 vac on both hots, then that is normal and I would guess there was a spike on the line for some reason that tripped your system. If a one time deal I would not worry about it as there are many things that can cause that. But if the spike happens more than once or if it is consistently high I would call the power company.


Edit: Your second post popped up while I was typing. 129 and 130 is higher than normal. I would call the power company and have them come out and test it.