Version 5.2 Sourcefire 3D System User Guide 245
Power Requirements for Sourcefire Devices
3D8120/8130/8140 and 3D8250/8260/8270/8290
Appendix A
Recommended Terminals
You must use UL-Approved terminals for the ground connection. Ring terminals
with a clearance hole for 4mm or #8 studs may be used. For 10-12 AWG wire,
Tyco 34853 is recommended. This is a UL-approved, ring terminal with a hole for a
#8 stud.
Ground Wire Requirements
The ground wire must be sized sufficiently to handle the current of the circuit in
case of a single fault. The size of the ground wire should be equal to the current
of the breaker used to protect the circuit. See
Current on page 241.
Bare conductors must be coated with antioxidant before crimp connections are
made. Only copper cables can be used for grounding purposes.
3D8120/8130/8140 and 3D8250/8260/8270/8290
Devices included in this section are:
• 3D8120/8130/8140 (CHAS-1U-AC, CHAS-1U-DC, or CHAS-1U-AC/DC)
• 3D8250/8260/8270/8290 (CHAS-2U-AC, CHAS-2U-DC, or CHAS-2U-AC/DC)
These Sourcefire devices are suitable for installation by qualified personnel in
network telecommunication facilities and locations where the National Electric
Code applies.
Sourcefire recommends that you save the packing materials in case a return is
necessary.
For more information, see the following sections:
• See AC Installation on page 245 for circuit installation, voltage, current, and
frequency range, and power cord information.
• See DC Installation on page 247 for circuit installation, voltage, current,
ground references, terminals, breaker requirements, and minimum wire
size.
• See Grounding/Earthing Requirements on page 249 for bonding locations,
recommended terminals, ground wire requirements, and DC supplies.
AC Installation
The Sourcefire 3D System must be installed in accordance with the requirements
of Article 250 of NFPA 70, National Electric Code (NEC) Handbook and local
electrical codes.
WARNING! Do not connect DC power to AC supplies.
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