To easy, I went into the Fire industry for 2 years installing and inspecting many buildings. Isolators are needed in the Security field. Say with the DMP or any bus device if not electricity protected with 1~ with a circuit breaker like an isolator, With a TRUE class A circut , The bus is shut down. DSC NEO has isolator options only issue only 16 can be used. Better then nothing . And yes that is on a class A circut . For the new guys a class A curcut is 2x wires out and return 2 wires in. Both sides can function independently. If a wiring issue arrises with one device , The ISOLATOR (like a breaker) kicks out and your other devices that are addressable report back to the side opposite the breaker. Hope this makes sense. All the years in security , all systems are not realy using ISOLATORS even the monster LENEL systems .
Btw I have worked on panels that had the OVC light lit and the system was just operating headless. CS was getting troubles and alarms but customer wasn’t able to access the system
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Every control panel when shorted will have a failure to function of some sort.
To easy, I went into the Fire industry for 2 years installing and inspecting many buildings. Isolators are needed in the Security field. Say with the DMP or any bus device if not electricity protected with 1~ with a circuit breaker like an isolator, With a TRUE class A circut , The bus is shut down. DSC NEO has isolator options only issue only 16 can be used. Better then nothing . And yes that is on a class A circut . For the new guys a class A curcut is 2x wires out and return 2 wires in. Both sides can function independently. If a wiring issue arrises with one device , The ISOLATOR (like a breaker) kicks out and your other devices that are addressable report back to the side opposite the breaker. Hope this makes sense. All the years in security , all systems are not realy using ISOLATORS even the monster LENEL systems .
We use isolated power supplies on the KP and LX busses. Problem solved.
Btw I have worked on panels that had the OVC light lit and the system was just operating headless. CS was getting troubles and alarms but customer wasn’t able to access the system