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Aluminum Ladder Cable Tray Selection Guide

Use the guide below to compare Chalfant aluminum ladder tray systems by load depth, NEMA load/span designation, support span, deflection, and structural properties.

Aluminum
System No.		 Height Side
Rail		 Load Depth NEMA Load /
Span Rating
(@1.5 Safety factor)		 Support Span (Simple Beam Data) Data (2-Rails)
6'1.83 m 8'2.44 m 10'3.05 m 12'3.66 m 14'4.27 m 16'4.88 m 18'5.49 m 20'6.10 m 24'7.32 m 30'9.14 m 35'10.7 m 40'12.2 m IxIn⁴ SxIn³ AreaIn² NEC392.9 EGC AMPS Tray WeightLbs Per Ft
2A 4"
(102)		 3"
(76)		 16A 5
12C		 430.43.0010 243.75.0031 1531.17.0076 1081.84.0165 792.31.0292 602.46.0410 2.951.411.14
(735)		12002.15
(3.20)
35A 5"
(127)		 5"4
(102)		 16A
12C		 161.083.0052 1121.21.011 821.64.020 602.03.0338 4.361.631.19
(768)		12002.2
(3.27)
26A 6.3"
(160)		 5.3"4
or 6"
(137/152)		 20A
16B		 342.89— 220.57.0026 152.84.0055 1121.13.0101 851.46.0172 671.87.0761 552.31.042 8.552.721.55
(1000)		16002.64
(3.93)
46A 6.3"
(160)		 5.4"4
or 6"
(137/152)		 20C It is not economical to use long span tray systems for short span installation. We advise moving up to a lighter duty system. 2881.09.0038 2121.51.0071 1621.96.0121 1282.48.0194 1043.05.0296 704.3.0614 12.14.552.11
(1361)		20003.32
(4.94)
665A 6.5"
(165)		 5.4"
or 6"
(137/152)		 24C 5 4301.20.0028 3161.61.0051 2422.11.0087 1912.65.0139 1553.29.0212 1044.58.0440 16.966.242.87
(1852)		20004.23
(6.29)
57A 7.4"
(188)		 6.4"
(163)		 24C 425.98.0023 3121.31.0042 2391.72.0072 1882.19.0116 1532.69.0176 1063.89.0366 20.46.72.62
(1690)		20003.82
(5.68)
8HAF 8"
(203)		 7"
(178)		 30C 7 5721.75.0031 4502.21.0049 3632.72.0075 2493.87.0155 1555.87.0379 1008.34.0834 48.0814.35.32
(3432)		20007.52
(11.19)
103A 10"
(254)		 8.85"
(225)		 40C 7 6362.03 4413.48 2824.59 2076.27 1598.20 115.424.17.40
(4555)		20009.45
(14.06)

2A

16A / 12C
Height side rail4" (102)
Load depth3" (76)

Support Span — Simple Beam Data

6'
1.83 m		8'
2.44 m		10'
3.05 m		12'
3.66 m		14'
4.27 m		16'
4.88 m
430.43.0010243.75.00311531.17.00761081.84.0165792.31.0292602.46.0410
Ix2.95
Sx1.41
Area1.14 (735)
NEC1200 A
Weight2.15 (3.20)

35A

16A / 12C
Height side rail5" (127)
Load depth5" (102)

Support Span — Simple Beam Data

10'
3.05 m		12'
3.66 m		14'
4.27 m		16'
4.88 m
161.083.00521121.21.011821.64.020602.03.0338
Ix4.36
Sx1.63
Area1.19 (768)
NEC1200 A
Weight2.2 (3.27)

26A

20A / 16B
Height side rail6.3" (160)
Load depth5.3" or 6" (137/152)

Support Span — Simple Beam Data

8'
2.44 m		10'
3.05 m		12'
3.66 m		14'
4.27 m		16'
4.88 m		18'
5.49 m		20'
6.10 m
342.89—220.57.0026152.84.00551121.13.0101851.46.0172671.87.0761552.31.042
Ix8.55
Sx2.72
Area1.55 (1000)
NEC1600 A
Weight2.64 (3.93)

46A

20C
Height side rail6.3" (160)
Load depth5.4" or 6" (137/152)
It is not economical to use long span tray systems for short span installation. We advise moving up to a lighter duty system.

Support Span — Simple Beam Data

12'
3.66 m		14'
4.27 m		16'
4.88 m		18'
5.49 m		20'
6.10 m		24'
7.32 m
2881.09.00382121.51.00711621.96.01211282.48.01941043.05.0296704.3.0614
Ix12.1
Sx4.55
Area2.11 (1361)
NEC2000 A
Weight3.32 (4.94)

665A

24C
Height side rail6.5" (165)
Load depth5.4" or 6" (137/152)

Support Span — Simple Beam Data

12'
3.66 m		14'
4.27 m		16'
4.88 m		18'
5.49 m		20'
6.10 m		24'
7.32 m
4301.20.00283161.61.00512422.11.00871912.65.01391553.29.02121044.58.0440
Ix16.96
Sx6.24
Area2.87 (1852)
NEC2000 A
Weight4.23 (6.29)

57A

24C
Height side rail7.4" (188)
Load depth6.4" (163)

Support Span — Simple Beam Data

12'
3.66 m		14'
4.27 m		16'
4.88 m		18'
5.49 m		20'
6.10 m		24'
7.32 m
425.98.00233121.31.00422391.72.00721882.19.01161532.69.01761063.89.0366
Ix20.4
Sx6.7
Area2.62 (1690)
NEC2000 A
Weight3.82 (5.68)

8HAF

30C
Height side rail8" (203)
Load depth7" (178)

Support Span — Simple Beam Data

16'
4.88 m		18'
5.49 m		20'
6.10 m		24'
7.32 m		30'
9.14 m		35'
10.7 m
5721.75.00314502.21.00493632.72.00752493.87.01551555.87.03791008.34.0834
Ix48.08
Sx14.3
Area5.32 (3432)
NEC2000 A
Weight7.52 (11.19)

103A

40C
Height side rail10" (254)
Load depth8.85" (225)

Support Span — Simple Beam Data

20'
6.10 m		24'
7.32 m		30'
9.14 m		35'
10.7 m		40'
12.2 m
6362.03—4413.48—2824.59—2076.27—1598.20—
Ix115.4
Sx24.1
Area7.40 (4555)
NEC2000 A
Weight9.45 (14.06)

Key and Working Load

  • 1 = Cable Loading (lb/ft)
  • 2 = Mid Span Deflection (in)
  • 3 = K Factor (in/lb/ft)
  • 4 = 6" Nominal Loading Depth per VE-1 with reinforced low profile rung
  • 5 = Exceeds NEMA Loads by over 20%
  • 6 = Weight shown (lbs/ft or Kg/M) for 24" width tray with 9" rung spacing
  • 7 = NEMA does not list 24", 30", 35", and 40' spans
Working Load
(lbs/linear ft.)		 8 Ft 12 Ft 16 Ft 20 Ft
A = 50 lbs/ft8A12A16A20A
B = 75 lbs/ft8B12B16B20B
C = 100 lbs/ft8C12C16C20C

Conversions and NEMA Designations

Conversion to Metric

Meters = 0.3048 × feet

Kg/m = 1.488 × lb/ft

mm = 25.4 × inches

Convert Load Data

To convert into a safety factor = 2.0, multiply loading values by 0.75 (ratio of 1.5/2.0).

K × W = Deflection for other loads (inches)

NEMA Load / Span Designations @ 1.5 Factor of Safety

From VE-1 Table 1

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