Hopefully some electrical guru can help ease my mind. I am setting up a freshwater planted aquarium and intend to use heating cables submerged in the substrate. Is there any way whatsoever I could be harmed by the following.
The cables are powered by a step down isolation transformer with 115 VAC input and drawing 2.46 amps on the input side with a max load of 270 watts protected by a 4.0 amp super time - Lag TT fuse.
The transformer powers a heavy duty submerged silicone cable manufactured by Dupla at 48 volts and 6.43 amps on the output side.
The statistics I have read indicate the skin give between 2000-50000 ohms of resistance, but a inside the skin only provides 500 ohms. It seems to me that should the cable become cut and exposed, and I happened to stick my arm in with a cut, I would potentially be able to run 96 milliamps through my body (48 volts / 500 ohms)? I have heard that 30 milliamps through the heart can cause cardiac arrest. Does this seem like sound reasoning. The product in question guarantees absolute safety, but I would appreciate opinions by those with extensive electrical knowledge.
Finally, I do use a GFCI, but as I mentioned, this is an isolation transformer. I also will be using a titanium grounding probe.
The cables are powered by a step down isolation transformer with 115 VAC input and drawing 2.46 amps on the input side with a max load of 270 watts protected by a 4.0 amp super time - Lag TT fuse.
The transformer powers a heavy duty submerged silicone cable manufactured by Dupla at 48 volts and 6.43 amps on the output side.
The statistics I have read indicate the skin give between 2000-50000 ohms of resistance, but a inside the skin only provides 500 ohms. It seems to me that should the cable become cut and exposed, and I happened to stick my arm in with a cut, I would potentially be able to run 96 milliamps through my body (48 volts / 500 ohms)? I have heard that 30 milliamps through the heart can cause cardiac arrest. Does this seem like sound reasoning. The product in question guarantees absolute safety, but I would appreciate opinions by those with extensive electrical knowledge.
Finally, I do use a GFCI, but as I mentioned, this is an isolation transformer. I also will be using a titanium grounding probe.
