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Del to make you happy I will try and call Jonathan tomorrow and get proof that the PS is Power Limited ((even though the installation instructions say so) and that it does not rely on a fuse to meet Power Limitation (it cant it would not meet code or UL864 or UL1481).  Should I ask him to put...

Mike there is a 15 A, 32V fuse on the battery circuit. The short circuit current on a 7 ah battery is over 100 amps for a brief period. Larger batteries you might be able to weld with. So many mfg out a protective device on the battery circuit. That and also for reverse polarity.

Weird my posts are multiplying...............

Mike,   I see where DEL got confused.  The 15A 32 V fuse is on the battery not the output (they consider it an output since it charges the battery).  As I stated it is inherently limited and not fused on the output of the supply itself.  Any power distribution board can be used and still be...

Mike,   I see where DEL got confused.  The 15A 32 V fuse is on the battery not the output (they consider it an output since it charges the battery).  As I stated it is inherently limited and not fused on the output of the supply itself.  Any power distribution board can be used and still be...

Mike,   I see where DEL got confused.  The 15A 32 V fuse is on the battery not the output (they consider it an output since it charges the battery).  As I stated it is inherently limited and not fused on the output of the supply itself.  Any power distribution board can be used and still be...

Mike,   I see where DEL got confused.  The 15A 32 V fuse is on the battery not the output (they consider it an output since it charges the battery).  As I stated it is inherently limited and not fused on the output of the supply itself.  Any power distribution board can be used and still be...

Mike,   I see where DEL got confused.  The 15A 32 V fuse is on the battery not the output (they consider it an output since it charges the battery).  As I stated it is inherently limited and not fused on the output of the supply itself.  Any power distribution board can be used and still be...

Mike,   I see where DEL got confused.  The 15A 32 V fuse is on the battery not the output (they consider it an output since it charges the battery).  As I stated it is inherently limited and not fused on the output of the supply itself.  Any power distribution board can be used and still be...

Technicall the Class 2 is misleading. They do that because some products like a CCTV camera state Class 2 not power limited. Search the web for table 11 and 11A of the NEC it will explain a lot

I never had a good grasp on this either.  Spent a lot of trial and error when I was writing my rules years ago until I got the hang of it (and have since forgotten it).  Coming up on the 10 year mark and I don't think I have added any rules in years other than re-enabling things now and then...

Mike,   I have never used that model but I will try and remember to look for it in our attic at work.  According to their cut sheet the output is Power Limited but each output appears to have supplemental fuses so a short or overload on one wont affect the others.   If their advertising is...

EDIT - DEL deleted the post I was referring to in this post which will add confusion to this thread.   Del,     Even a DIY person has to be wary of the application to insure that their installation is safe and meets code etc. Their families safety is more important than a Pro being sued etc. ...

Mike,   Inherently Limited would mean it meets the NEC requirements for Power Limitation without a protective device such as a PTC.  So the NEC states that the circuit cannot be capable of providing 8 amps (or 100 watts) at 5 seconds to be inherently limited.  A small transformer or power supply...

Mike,   Del may have said that fuses break faster I did not.   If you refer to the NEC and the UL Standards you will see that a Power Limited Circuit is required in almost all Fire, Burg and Access Control applications where conduit is not used and the supply is not inherently limited for...

It would depend on the model etc.

Del,   Your  information often has the potential to mislead people.  Your statement that fuses are better than PTC in the application appears  incorrect.   Now you are saying you agree PTC's are required for Fire Alarm applications but not in Security or Access Control etc.  Well then you need...

In Fire Alarm circuits a Power Limited circuit (PTC protected) is actually specified over a Class 2 (fuse protected) in NFPA 72 and UL Standards. UL tests the performance of the PTC's across the specified temp range of the device (typically 0 to 49 C) and by the mfg name and part number. So...

HS3 is still a work in progress and seems unstable in many cases.  Some people are seeing high CPU usage and crashing etc. especially on Hometrollers (they just released a brand new one that may be ok).  HS seems to be relying on its customers to make the plug ins and they are working on the...

You should check out an ISY. 30 day money back if you don't like it.  Lots of capabilities.  First maybe ask questions on their forum or email them with questions.  Heck if you email them today I think you will be surprised on how quickly you get an answer.  I got an answer in about an hour on a...