Make sure your outlets are GFCI and grounded. A leading cause of fires and electrical shocks is water running down wires or a heater or other item releasing electricity into the water. Amazing how many people have multiple items plugged into age old outlets.(not even grounded outlets)
FYI using a powerstrip does not make it grounded outlet....
http://www.homedepot.com/h_d1/N-5yc1...1#.USBtdh136So