MPC-6000 / MPC-7000 / RND-2 INSTALLATION, OPERATION AND MAINTENANCE MANUAL
37
Control Unit Wiring Overview
In compliance with NEC Article 760 and UL 864, all power limited fire protective signaling
conductors must be separated a minimum of 1/4 inch from all of the following wiring located
within a control panel:
•
Electric
light
•
Power
•
Class 1 or non-power limited fire protective signaling conductors
To meet these requirements, the following guidelines
must be observed
when installing
modules and wiring to this control panel.
When installing power limited field wiring, the installer must comply with NEC article 760, which
states:
The fire alarm power-limited circuits are installed using Types FPL, FPLR, FPLP or
permitted substitute cable, provided these power-limited cable conductors extending
beyond the jacket are separated by a minimum of 0.25 in. (6.35 mm) or by a nonconductive
sleeve or nonconductive barrier from all other conductors.
If energy limited cable or equivalent is not used within the MPC-6000 / MPC-7000 / RND-2
enclosure, then the following guidelines do not apply. In that case, be sure to follow standard
wiring
practices.
Wiring Entering Enclosure
•
Non-Power Limited Wiring - Wiring entering the enclosure from the bottom left side of the
backbox is considered non-power limited wiring. Wiring must be in the shortest route and
must not overlap any other wiring.
•
Power Limited Wiring - Wiring entering the enclosure from the top and the left side of the
backbox is considered power limited. Wiring must be in the shortest route and must not
overlap any other wiring.
Install Wiring
The primary mains input must have a separate or dedicated circuit breaker. Wire in
accordance with local codes and NEC 760.
•
Remove the knockouts in the backbox for the entry of field wiring. (Refer to Enclosure
Mounting Pictures on pages 28 and 29 and Wiring Separation Diagram on next page for
the location of knockouts.)
•
Pull all field wiring into the backbox. Do not dress the wiring until the location of all the
equipment is known.
Install the wiring from the external power source to the approximate location of the power
supply.
The overall arrangement of boards in the control unit is shown in the following diagram
.
