6-3
Chapter 6 4100ES SPS Field Wiring
General Field Wiring Guidelines (continued)
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 6-1.
• Power-limited field wiring must be installed and routed in the non-shaded areas shown in Table 6-1,
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 6-1.
Figure 6-1. Power-Limited Wiring
• 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.
Continued on next page
CONDUIT ENTRANCE
FOR POWER-LIMITED
WIRING
POWER-LIMITED
WIRING
CONDUIT ENTRANCE
FOR NON-POWER
LIMITED WIRING
TIE POINT
(LOCATION MAY VARY)
NON-POWER LIMITED
WIRING
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