XHEZ.C-AJ-8331 - Through-penetration Firestop
Systems
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Through-penetration Firestop Systems
System No. C-AJ-8331

March 31, 2022
ANSI/UL1479 (ASTM E814)
F Rating — 2 HrT Rating — 1/2, 1, 1-1/2 Hr (See Item 2)

1. Floor or Wall Assembly — Min 114 mm (4-1/2 in.) thick reinforced normal weight (2320-2480 kg/m3 or 145-155 pcf) concrete. Wall may
also be constructed of any UL Classified Concrete Blocks*. Max area of opening is 0.6 m2 (930 in.2) with a max dimension of 1200 mm (47-1/4in.).

See Concrete Blocks (CAZT) category in the Fire Resistance Directory for names of manufacturers.

2. Through Penetrant — A max of 3 firestop configurations may be installed within the opening provided that the following parameters
relative to the annular spaces are maintained. The space between the firestop configurations shall be min 40 mm (1-5/8 in.) except for thefollowing: the annular space between cable tray and busway shall be min 225 mm (8-7/8 mm). The space between the firestop configurations
and periphery of opening shall be min 30 mm (1-3/16 in.) to max 340 mm (13-3/8 in.). Through penetrants to be rigidly supported on bothsides of floor or wall assembly. The T Rating of the system is dependent on the firestop configuration, as shown in the table below. Any
combination of the following firestop configurations detailed herein may be used:
Firestop Configuration

T Rating (Hr)

A

1/2

B1

C

1-1/2

Firestop Configuration A
2. Through Penetrant —A. Cable Tray — Max 1000 mm wide (39-3/8 in.) by max 75 mm (3 in.) deep open-ladder cable tray with channel-shaped side rails
formed of min 1.6 mm (0.0630 in.) thick steel with or without rungs. A max of one cable tray to be installed in the opening. The
annular space between the cable tray and the periphery of the opening shall be min 40 mm (1-5/8 in.) to max 225 mm (8-7/8 in.).
Cable tray to be supported on both sides of the floor or wall assembly.
B. Cables — Aggregate cross-sectional area of cables in cable tray not to exceed 40 percent of the cross-sectional area of the cabletray based on a max 82 mm (3-1/4 in.) cable loading depth within the tray. Any combination of the following types and sizes ofcables may be used:
A. Max 1/C No. 650 kcmil (or smaller) copper conductor power cables with XLPE or PVC insulation with PE jacket.
B. Max 1/C No. 4 AWG (or smaller) copper conductor power cables with XLPE or PVC insulation with PVC jacket.
C. Max 1/C No. 1000 kcmil (or smaller) copper conductor power cables with XLPE or PVC insulation with PE jacket.
D. Max 1/C No. 10 AWG (or smaller) copper conductor power cables with XLPE or PVC insulation with PVC jacket.
E. Max 4/C No. 1 AWG (or smaller) copper conductor power cables with XLPE or PVC insulation with PVC jacket.
F. Max 4/C No. 14 AWG (or smaller) copper conductor power cables with XLPE or PVC insulation with PVC jacket.
G. Max 3/C No. 2/0 AWG (or smaller) copper conductor power cables with XLPE or PVC insulation with PVC jacket.
H. Max 3/C No. 14 AWG (or smaller) copper conductor power cables with PVC insulation with PVC jacket.
I. Max 3/C No. 2/0 AWG (or smaller) copper conductor power cables with XLPE or PVC insulation with PVC jacket.
J. Max 2/C No. 10 AWG (or smaller) copper conductor power cables with PVC insulation with PVC jacket.
K. Max 30/C No. 12 AWG (or smaller) copper conductor control cables with PVC insulation with PVC jacket.
L. Max 2/C No. 16 AWG (or smaller) copper conductor control cables with PVC insulation with PVC jacket.
M. Max 63.6 mm2 Fiber Optic (F.O) cables with PE insulation and jacket.
N. Max 50 pair No. 19 AWG (or smaller) copper conductor telecommunication cables with PE insulation and PVC jacket.
O. Max 1 pair No. 22 AWG (or smaller) copper conductor telecommunication cables with PE insulation and PVC jacket.
P. Max 19.2 mm2 coaxial cables with PE insulation with PVC jacket.
Q. Max 4 pair No. 24 AWG (or smaller) copper conductor data cables with PE insulation and PVC jacket.

Firestop Configuration B
2. Through Penetrant —A. Busway+ — Nom 750 mm (29-9/16 in.) wide by 120 mm (4-3/4 in.) deep (or smaller) "I" shaped aluminum and steel enclosure
containing factory mounted copper bars rated for 600 V, 5000A or aluminum bars rated for 600 V, 4000A. One busway may beinstalled within the opening. The annular space between the busway and the periphery of the opening shall be min 45 mm (1-13/16in.) to max 225 mm (8-7/8 in.). Busway to be rigidly supported on both sides of floor or wall assembly. The busway shall bear the UL
Listing Mark and shall be installed in accordance with all provisions of Article 364 of the National Electrical Code, NFPA 70.

Firestop Configuration C
2. Through Penetrant — A max of two metallic conduits installed concentrically within the opening. The annular space between the conduitand the periphery of the opening shall be min 30 mm (1-3/16 in.) to max 225 mm (8-7/8 in.). Penetrant to be rigidly supported on both sidesof floor or wall. The following types and sizes of metallic conduit may be used:
A. Conduit – Nom 4 in. (102 mm) diam (or smaller) steel electrical metallic tubing or rigid steel conduit.

3. Firestop System — The firestop system shall consist of the following:
A. Fill, Void or Cavity Materials* — Pillow — Nom 200 mm (7-7/8 in.) long by 200 and 100 mm (7-7/8 and 3-15/16 in.) wide by 53mm (2-1/8 in.) thick and nom 200 mm (7-7/8 in.) long by 100 and 50 mm (3-15/16 and 2 in.) wide by 28 mm (1-1/8 in.) thick pillows
tightly-packed into the opening to fill annular space between all penetrants and periphery of opening. Pillows installed centered
within the opening, edge first. If the floor is less than 200 mm thick, the pillows should either be extended from or flush with the top
and bottom surface of the floor without recess from above and below. If the floor is equal to or greater than 200 mm thick, thepillows are to be flush with the bottom surface of the floor or recessed equally from both surfaces of the floor. The pillows shouldextend or recess equally from both surfaces of the wall.
FURUKAWA TECHNO MATERIAL CO LTD — Firestop Block 200L
B. Fill, Void or Cavity Materials* — Putty — Min 7 mm (5/16 in.) thick by 30 mm (1-3/16 in.) deep of fill material to be cut to proper
width to completely fill side rails or any cavities within Item 3A.
FURUKAWA TECHNO MATERIAL CO LTD — Fire Stop Putty-BP* Indicates such products shall bear the UL or cUL Certification Mark for jurisdictions employing the UL or cUL Certification (such asCanada), respectively.
+Bearing the UL Listing Mark.

Last Updated on 2022-03-31

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