Perhaps there wasn't enough of a DIRECT short to tell the breaker to trip (think welder) or maybe the breaker is old or malfunctioning.

Additionally, if there are any issues with the unit that need to be addressed, such as a malfunctioning appliance or a problem with the electrical system, it will be easier to identify and fix those issues with the electricity on.Leaving the electricity off until a week before the tenant moves in may not provide enough time to identify and fix any last minute issues that may pop up, and it may also make it difficult to do any final cleaning or touch-ups.

The 3rd time was a malfunctioning water heater, since heater was already 15 years old I simply called my trusted plumber to go install a new one. 

She couldn't afford rent, so she can't afford a retainer and no attorney would take her case without advance payment, because its absurd.She has no evidence a break-in ever occurred or that the sliding door was unsecured due to any malfunction.

This theoretically eliminates the danger, but GFCI outlets have a known tendency to malfunction more frequently than regular outlets.

The adjuster attempted to suggest that a lack of heat may have caused the diverter to malfunction.

@Zach Diamond, if one system malfunctions and needs to be replaced you're essentially screwed.

Tenant agrees not to block or cover any of the heating, ventilation or air-conditioning ducts in the Premises. 29.2 Reporting Requirements: Tenant also agrees to immediately report to the Landlord:29.2.1 Any evidence of water leaks or excessive moisture in the Premises; 29.2.2 Any evidence of mold or mildew-like growth that cannot be removed by simply applying a common household cleaner and wiping the area; 29.2.3 Any failure or malfunction in the heating, ventilation or air-conditioning system in the Premises; and 29.2.4 Any inoperable doors or windows. 29.3 Responsibility for Damage.

You will learn so much from minor and major failures and possIbly many many unforeseen and unpredIctable malfunctIons across the board and on your punch lIst.

I've seen scorched walls where tenants miswired dryers, destroyed floors from malfunctioning ice makers, floods from washer drain hoses not attached properly, and other similar things.