Burn Through (Cable Pull)Fiberglass conduit is an excellent material for avoiding “burn through” when pulling cable. | No | Yes | Yes | No | No | No |
Coefficient of FrictionUsing PVC Jacketed Cable
Fiberglass conduit offers one of the lowest coefficient of friction available today for conduit systems. It is completely resistant to any of the current pulling lubricants corrosive properties. | 0.38 | 0.90 | 0.90 | 0.55 | 0.55 | 0.25 |
ConductivityFiberglass conduit acts as an excellent insulator. | No | No | No | Yes | Yes | Yes |
UV Stable (Sunlight Resistance)(Per UL 2515 & CSA C22.2 No. 211.3-96) | Good | Poor | Poor | Excellent | Poor | Excellent |
Coefficient of Thermal Expansion
(10-5 inch/inch/°F)
*The coefficient is .7 for the steel and 3.5 for the PVC layer. Because of the broad difference between the two materials, adhesion is severely affected during temperature contraction and expansion. | 1.0 | 3.5 | 3.5 | 0.7 | 3.5/0.7* | 3.5 |
Distance Between Expansion Joints (ft) | 200 | 50 | 50 | 200 | 200 | 50 |
NECA Labor Installation Rates
(Normal installation hours per/100 ft) (REF: 2017-2018 NECA Manual
of Labor Units)
*Reduce labor units by 10% for 20-foot lengths | 3⁄4"
1"
11⁄4"
11⁄2"
2"
21⁄2"
3"
31⁄2"
4"
5"
6" |
| 5.5
5.8
6.0*
6.4*
6.8*
7.1*
7.5*
7.9*
8.3*
8.6*
9.0* | 4.5
5.3
6.0
7.0
8.0
9.0
10.0
12.0
14.0
18.0
24.0 | 5.4
6.3
7.2
8.4
9.6
10.8
12.0
N/A
16.8
21.6
28.8 | 6.0
7.0
8.0
9.0
11.0
15.0
20.0
25.0
30.0
38.0
48.0 | 8.0
10.0
12.0
15.0
18.0
21.0
26.0
32.0
38.0
45.0
60.0 | 5.5
6.0
6.5
7.0
8.0
10.0
12.0
15.0
19.0
24.0
30.0 |
Field HandlingDue to its light weight, ease of cutting and integral bell, fiberglass conduit is very easy to install. | Excellent | Good | Good | Very Poor | Very Poor | Poor |
MemoryFiberglass conduit will retain its original shape after impact or compression. | Yes | No | No | No | No | No |
