Reverse Polarity Fuses Circuit Question
Ok fellow scientists :) What is so special about the reverse polarity fuse circuit in a converter compared with just having a fuse on the positive output wire? I yanked the 7355 from the trailer ...
Forum Discussion
BLF13,
Normally fuses and breakers are sized to protect wire and components downstream of the source. In reverse polarity protection, the source is the battery. Since the converter manufacturer has no control of what goes on past his output posts, he is only trying to protect his converter from a RP connection so he installs fuses. It is up to the user or the trailer manufacturer to protect the positive wire on the battery where ever it may go so it is a good idea to have a fuse or CB near the battery as well.
Normally fuses and breakers are sized to protect wire and components downstream of the source. In reverse polarity protection, the source is the battery. Since the converter manufacturer has no control of what goes on past his output posts, he is only trying to protect his converter from a RP connection so he installs fuses. It is up to the user or the trailer manufacturer to protect the positive wire on the battery where ever it may go so it is a good idea to have a fuse or CB near the battery as well.
