Notifier SLC Wiring Manual — P/N 51253:U9 12/3/2021 28
Section 4: SLC Circuits without Isolators
4.1 Overview
This chapter concerns itself with the two classes of circuits that do not require isolation devices:
• NFPA 72 Class B
• NFPA 72 Class A
4.2 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 4.1 Basic NFPA Class B SLC
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