Yeah man, quite an experience you got there, but it was avoidable in the 1st place though. Your documenting the electrifying experience would help to deter would be reefer in to placing such electrical outlet above the sump. As for your Deltec pump, be prepared to shell some bagful of dough. I had replaced my APF600 pump and it was costly. The old model Deltec are electrical hogging, inefficient design compared to the Super Reef Octopus XP series and the Bubble King SM and Mini series. These 2 would run around the old Deltec skimmer and still save you some money monthly. They do not require an additional feed pump and uses 1 pump instead of 3 to perform their duty. The days of using multiple pump to create bubbles are numbered.
Your compressor chiller heat output is not that bad, I have 1 in my living room and the heat produced from the compressor chiller is lower compared to a Resun CL650. I was using the Resun CL650 previously and the heat it produced destroyed my father Coca-Cola collection! Some of the Coca-cola can just burst due to heat. Using the air-con compressor chiller presently, this problem hasn't occured anymore. The compressor chiller is only operating for 25 minute and rest for 2 1/2 hr. If it rain, it will take a longer rest time.