This Old Faraday AC Only Fire system came with a dangerous Suprise

This  AC Only Type Faraday 400 series panel was installed in 1960's in a building in Beaver County.

The only supervision is the Bell circuit which uses bells wired in series you can see in picture above the Transformer at bottom of panel which is used to set the tap required depending how many bells where used in the circuit. Normally 2 single breakers or fuses feed power to the system . Often times the power is feed directly ahead of the main . But not in this case the wiring is protected by the main  breaker . This makes it safer to work on but not in this case . while examining the panel to remove and update it I found an extra power circuit running thru the cabinet  to power the phone systems near by. This circuit should not even be anywhere near this fire panel and was obviously fooled with by a non electrician who was too lazy to run it back separate and instead used the conduits for the fire alarms power supply.  Being an electrician familiar with these systems I intermediately caught the problem how ever your average installer tech never would have and could have received a severe shock  .

Needless to say this will have to be corrected and noted to prevent future installers from getting hurt.