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FireLite SLC Wiring Manual — P/N 51309:R3 7/29/2019
Section 3: SLC Circuits without Isolators
3.1 Overview
This chapter concerns itself with the two Classes of circuits that do not require isolation devices:
•NFPA Class B
•NFPA Class A
3.2 NFPA Class B SLC
NFPA Class B requirements can be met by using the diagram below.
• T-tapping of the SLC wiring is allowed for Class B configuration.
SLC-style4.wmf
Two-wire Addressable Detector
Addressable Module
T-tapped Circuits
Control Panel
SLC
B+ B–
Figure 3.1 Basic NFPA Class B SLC
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