Legrand FIT Fire-Rated Poke-Thru Devices User Manual
Page 4
The FIT Series Poke-Thru Device is UL Listed and Classified to U.S. and Canadian safety standards to the following condi-
tions:
The FIT Poke-Thru Stem with the 200 Series Service Head, the 221-21CARPET, 221-21TILE, or AP-FITTC Abandonment Fitting
are for use with 1-, 1 1/2-, 2-, 3-, or 4-hour rated unprotected, reinforced concrete floors and 1-, 1 1/2-, 2-, or 3-hour rated floors
employing unprotected steel floor units and concrete topping (D900 Series Designs), or concrete floors with suspended ceilings.
(Fire resistive designs with suspended ceilings should have provisions for accessibility in the ceiling area below the
poke-thru fittings).
The FIT Poke-Thru Stem with the 241 Series Double Service Head, the 221-21CARPET, 221-21TILE, or AP-FITTC Abandonment
Fitting are for use with 1-, 1 1/2-, or 2-hour rated unprotected, reinforced concrete floors and 1-, 1 1/2-, or 2-hour rated floors
employing unprotected steel floor units and concrete topping (D900 Series Designs), or concrete floors with suspended
ceilings. (Fire resistive designs with suspended ceilings should have provisions for accessibility in the ceiling area below
the poke-thru fittings).
The assembled poke-thru stem and the single or double service heads or the abandonment fittings will not reduce the ratings of the
floor assembly when the thickness and type of concrete (required for the specific rating) are within the specified limits and the fittings
are installed as specified:
1. Spacing – Minimum of 2' [610mm] OC and not more than one unit per 65 sq. ft. [6 sq. m] of floor area in each span.
2. Concrete – Minimum thickness of structural concrete topping of 2 1/4" [57mm] over metal deck or a minimum 3" [76mm]
thick reinforced concrete slab. Unit weight of concrete to be 110 to 155 pcf.
3. Installation – Mounted in a 2" [51mm] diameter core-drilled hole in concrete per installation instructions accompanying the
fittings or abandonment fittings. For use with power circuits, data and/or maximum 50-pair size telephone cables as tabulat-
ed below:
(A) Maximum number of No. 12 AWG Type THHN conductors in power compartment of poke-thru fitting.
(B) Maximum number of 22 AWG conductors in low voltage compartment of poke-thru fitting (4-pair cables have (8)
conductors, 25-pair cables have (50) conductors) When conductors larger than No. 22 AWG are used, the aggregate
cross-sectional area of the copper conductors shall not exceed the aggregate cross-sectional area of the 22 AWG
conductors permitted in the low voltage compartment.
(C) 1/2", 3/4", and 1" [12.7mm, 19.1mm, and 25mm] flexible metallic conduit and fittings may be used with the 200 or 241
Series Service Head.
(D) Maximum number of power conductors when flexible metallic conduit is used. Maximum number of communication
conductors to be adjusted accordingly.
FIT
200-H/BTC
(pwr/communication)
3
(.01536 sq in.)
[9.9103mm
2
]
100
(.05000 sq. in.)
[32.260mm
2
]
200-H/BTC
(pwr/communication) (D)
7
(.03584 sq in.)
[23.124mm
2
]
60
(.03000 sq. in.)
[19.356mm
2
]
200-H/BTC
(pwr only)
(D) 13
(.06656 sq in.)
[42.946mm
2
]
–
200-H/BTC
(communication only)
–
130
(.06500 sq. in.)
[41.938mm
2
]
200-RTRTC
(pwr/communication)
5
(.02560 sq in.)
[16.517mm
2
]
80
(.04000 sq. in.)
[25.808mm
2
]
241-H/BTC
(pwr/communication)
7
(.03584 sq in.)
[23.124mm
2
]
100
(.05000 sq. in.)
[32.260mm
2
]
241-H/BTC
(pwr only)
12
(.06144 sq in.)
[39.641mm
2
]
–
241-H/BTC
(communication only)
–
170
(.08500 sq. in.)
[54.842mm
2
]
241-2R/T/2RTC (pwr/communication)
170
(.03584 sq in.)
[23.124mm
2
]
100
(.05000 sq. in.)
[32.260mm
2
]
POKE-THRU SERVICE
POWER
COMMUNICATION
FITTING TYPE
FITTING TYPE (C)
CONDUCTORS (A)
CONDUCTORS (B)
Size
Solid
#24
.00032 sq. in. [.20645mm
2
]
#22
.00050 sq. in. [.32258mm
2
]
#14
.00323 sq. in. [2.08386mm
2
]
#12
.00512 sq. in. [3.30321mm
2
]
#10
.00815 sq. in. [5.25805mm
2
]
# 8
.01296 sq. in. [8.36127mm
2
]
Copper Cross Sectional Area
of Commonly Used Conductors
NOTE: Use above values for solid or stranded conductors.
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