Power-Limited Guidelines - Simplex 4100ES Installation Manual

22.5.1.2 Power-Limited Guidelines

Make sure these guidelines are accounted for before wiring for power-limited systems:
• Non-power limited field wiring (AC power, batteries, City connection) must be installed and routed in the shaded areas shown in Table
32.
• Power-limited field wiring must be installed and routed in the non-shaded areas shown in Table 32, with the exception of City wiring.
• Excess slack should be kept to a minimum inside the back box enclosure. The wiring should be neatly dressed and bundled together
using wire ties. Anchor power-limited wiring to tie points, as shown in Figure 97.
• Tie the wiring located between bays to the internal wiring troughs, if applicable.
• When powering remote units or switching power through relay contacts, power for these circuits must be provided by a power-limited
power supply listed for fire-protective signaling use. An EOL relay must be used to supervise the auxiliary power circuit.
• Auxiliary power only: Supervision must be provided if the auxiliary power circuit is to be wired as a power-limited circuit. In order to
connect a circuit using power-limited wiring, the devices being powered must all be addressable, or a UL Listed EOL relay must be
used to supervise the circuit. Refer to Figure 98 for wiring directions for the EOL relay.
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Figure 97: Power-Limited Wiring
4100ES Fire Alarm System Installation Guide
574-848 Rev. BQ