Description

  • UL bonded strip 3/8″ – 11⁄4″ for grounding
  • UL Liquidtight all sizes
  • Sunlight resistant
  • Flame retardant PVC jacket
  • Hot dipped zinc galvanized low carbon steel core
  • Blue PVC jacket

Applications

  • Raised computer room floors per NEC® 645.5(D)
  • 600 volt and lower circuits
  • Direct burial in earth
  • Concrete embedment
  • Suitable for grounding per NEC® 250.118(6), 3/8″ – 11⁄4″
  • Hazardous location per NEC® 501

Construction

The Type UL Liquidtight Flexible Steel Conduit shall be formed from a zinc coated galvanized low carbon steel strip having a uniform width and thickness. The construction shall be in accordance with UL 360 and CSA C22.2 Number 56 requirements. The finished Type LFMC dimensions shall be in accordance with Table 5.1 of UL 360 and Table 2 of CSA C22.2 No. 56

Jacket – PVC

A rugged moisture, oil and sunlight resistant polyvinyl chloride (PVC-colored Blue) jacket shall be applied directly over the flexible metal conduit with a wall thickness in accordance with Table 4.1 of UL 360 and Table 4 of CSA C22.2 No.56.

Temperature Rating

  • 80°C to -30°C Dry
  • 60°C Wet
  • 70°C Oil resistant

References & Ratings

  • UL 360, File Reference E26540
  • CSA LL51593, CSA C22.2 Number 56
  • NEC® 250.118(6), 350.60, 390.15, 501.10(B)(2), 502.10(A)(2), 503.10(A)(2), 511.7(A)(1), 620.21(A)(d), 645.5(D)(2), 680.21, 680.42, 695.6(E), 695.14(E)
  • Canadian Electrical Code (CEC) Part I Clause 12-1300
  • UL bonding strip 3/8” – fit 11⁄4″ for grounding
  • UL approved for use in direct burial applications including concrete and earth burial (Sizes 3/8″ through 4″)
  • Conduit in sizes 11⁄2″ and larger requires grounding conductor per NEC® 350.60

Grounding

Permanent circuit ground protection is provided through the continuous bonding strip built into the conduit core in sizes 3/8″ through 11⁄4″. A separate grounding conductor is required by the NEC® for trade sizes 11⁄2″ and larger. The Canadian Electric Code requires a grounding conductor for all trade sizes of Liquidtight Flexible Metal Computer Blue Conduit.

Markings

The surface of the outer jacket shall be clearly marked with a legible print legend in compliance with UL 360 and CSA C22.2 No. 56.

Performance Tests

In accordance with UL 360 and CSA C22.2 No. 56, the completed UL LIQUID-TUFF™ Computer Blue Liquidtight Flexible Steel Conduit shall meet all of the performance requirements outlined below.

UL Performance Tests
  • Resistance and High Current
  • Fault Current
  • Impact
  • Deformation Test Pipe Stiffness
  • Flexibility
  • Zinc Coating
  • Vertical Flame
  • Pinhole Test
  • Mechanical Water Absorption
  • Moisture Penetration
  • Sunlight Resistance
  • Test for Secureness of Fittings
  • Test for Durability of Ink Printing
CSA Performance Tests
  • Physical Properties
  • Original Tensile and Elongation
  • Air Oven Aging Test
  • Oil Immersion Test
  • Deformation Test
  • Tension
  • Zinc Coating
  • Low Temperature Flexibility
  • Vertical Flame
  • Cold Impact
  • Pinhole Test
  • Compatibility with Connectors
Product CodeTrade Size (inches)Trade Size (mm)Length Coil (feet)Length Reel (feet)Approx. Weight/1000 Feet (lbs.)External Diameter (inches) Over Conduit (min/max)External Diameter (inches) Over Jacket (min/max)Internal Diameter (min/max) inchesBend Radius inches
6402-30-001/216100'-310.732/0.7650.820/0.8400.622/0.6423.25
6402-45-001/216-500'310.732/0.7650.820/0.8400.622/0.6423.25
6402-60-001/216-1000'310.732/0.7650.820/0.8400.622/0.6423.25
6403-30-003/421100'-490.930/0.9601.030/1.0500.820/0.8404.25
6403-45-003/421-500'490.930/0.9601.030/1.0500.820/0.8404.25
6403-66-003/421-2000'490.930/0.9601.030/1.0500.820/0.8404.25
6404-30-00127100'-791.201/1.2261.290/1.3151.041/1.0666.5
6404-41-00127-400'791.201/1.2261.290/1.3151.041/1.0666.5
6405-24-001 1/43550'-1031.540/1.5701.630/1.6601.380/1.4108
6405-40-001 1/435-200'1031.540/1.5701.630/1.6601.380/1.4108
6406-24-001 1/24150'-901.735/1.7701.865/1.9001.575/1.6009
6406-35-001 1/241-150'901.735/1.7701.865/1.9001.575/1.6009
6407-24-0025350'-1202.180/2.2152.340/2.3752.020/2.04511.12
6407-30-00253-100'1202.180/2.2152.340/2.3752.020/2.04511.12
6408-22-002 1/26325'-1212.640/2.6752.840/2.8752.480/2.50514.62
6408-79-002 1/263-275'1212.640/2.6752.840/2.8752.480/2.50514.62
6409-22-0037825'-1453.295/3.3353.460/3.5003.070/3.10017.5
6409-56-00378-175'1453.295/3.3353.460/3.5003.070/3.10017.5
Conduit Trade Size (inches)Conduit Trade Size (Metric)Minimum Acceptable Average Thickness of Jacket, (inches)
3/8120.030
1/2160.030
3/4210.035
1270.035
1 1/4350.035
1 1/2410.040
2530.040
2 1/2630.050
3780.050
3 1/2910.060
41030.060
Conduit Size (inches)Conduit Size (Metric)Internal Diameter, Min. (inches)Internal Diameter, Max. (inches)Over Conduit, Min. (inches)Over Conduit, Max. (inches)Over Jacket, Min. (inches)Over Jacket, Max. (inches)
3/8120.4840.5040.5940.6140.6900.710
1/2160.6220.6420.7320.7650.8200.840
3/4210.8200.8400.9300.9601.0301.050
1271.0411.0661.2011.2261.2901.315
1 1/4351.3801.4101.5401.5701.6301.660
1 1/2411.5751.6001.7351.7701.8651.900
2532.0202.0452.1802.2152.3402.375
2 1/2632.4802.5052.6402.6752.8402.875
3783.0703.1003.2953.3353.4603.500
3 1/2913.5003.5403.7203.7893.9604.000
41034.0004.0404.2204.2804.4604.500