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  1. G

    Does the PPD do more than reverse polarity protect ? Modern replacement for PPD ?

    And this is why I run a 300A Niehoff 12/24 for my (4x) 6TAGM system. In interest of redundancy when off-grid I prefer to keep the four battery system. If I lose a battery I can reconfigure to two. Can't get 24v from a single so the 2x system has no available redundancy.
  2. G

    Does the PPD do more than reverse polarity protect ? Modern replacement for PPD ?

    Sometimes you don't want the operators or even the field techs to pop in another fuse or bypass the fuse easily. The AIH is very high current draw and a malfunction down stream from the PPD/LBCD could easily cause a fire. When that link burns through the techs will have to go into the TM and...
  3. G

    Does the PPD do more than reverse polarity protect ? Modern replacement for PPD ?

    That's a fusible link. It is designed that way on purpose to burn through if the rated amperage draw of the heater exceeds it's rating. A "fusible link" is simply a section of wire that is intentionally several wire gauges smaller to contain the failure to a specific location. It's just like the...
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