smoke detector

I am looking for some answer reguarding multi family dwelling units. I recently received some prints to bid on for multi family dwelling units. It has 3 units in the building. I know each individual unit needs it’s smoke/carbon detectors. I’m looking on some advice for the fire alarm system for...

I am looking for some answer reguarding multi family dwelling units. I recently received some prints to bid on for multi family dwelling units. It has 3 units in the building. I know each individual unit needs it’s smoke/carbon detectors. I’m looking on some advice for the fire alarm system for...

I've been scouring through the NEC 2011. Can anyone post the section of the code that allows me to install residential smoke detectors on a shared circuit? I can not find where the code addresses smoke detectors outside for fire alarm systems 760

Service call this afternoon coming up. Customer claims he now has eight recently installed Kidde 120 volt interconnected photoelectric smokes with battery backup. These were installed in February by another electrician to replace his existing smokes which would intermittently alarm (every two...