Skip to main content

ASTTBC RFPT — Fire Alarm Systems (AL) · Question

If a ground fault occurs on a fire alarm control unit's internal wiring, what is the maximum time allowed for the unit to indicate the fault?

Per CAN/ULC-S527, a system 'Trouble' signal must be distinct from 'Alarm' or 'Supervisory' signals. If a supervisory signal is silenced, the trouble lamp must r

Start free practice for ASTTBC RFPT — Fire Alarm Systems (AL)

30 questions · no signup required · 40 free questions per day

Start Practice →

Question: If a ground fault occurs on a fire alarm control unit's internal wiring, what is the maximum time allowed for the unit to indicate the fault?

Answer options: ✅ Visual and audible trouble signal within 200 seconds

  • Immediate system shutdown
  • Visual trouble signal only after 5 minutes
  • Audible alarm signal activation

Correct answer: Visual and audible trouble signal within 200 seconds

Explanation: Per CAN/ULC-S527, a system 'Trouble' signal must be distinct from 'Alarm' or 'Supervisory' signals. If a supervisory signal is silenced, the trouble lamp must remain on but the audible may be silenced if a separate trouble develops. Short circuits on IDC/NAC are specific trouble conditions.

Start free practice for ASTTBC RFPT — Fire Alarm Systems (AL)

30 questions · no signup required · 40 free questions per day

Start Practice →

More about ASTTBC RFPT — Fire Alarm Systems (AL)

Related Questions

More for ASTTBC RFPT — Fire Alarm Systems (AL) candidates

Ready to practice?

Free, no signup required. Build a wrong-question list as you go.

Start Free ASTTBC RFPT — Fire Alarm Systems (AL) Practice →

Related courses

Other Canadian certifications candidates often prepare for alongside this one.