C3A: Cement potting and silicone varnish with no lead end disc, galvanized cable
C3B: Cement potting and silicone varnish with no lead end disc, stainless steel cable
C3C: Welded lead end disc, with galvanized cable
C3D: Welded lead end disc, with stainless steel cable
Minimum 3/8" up to 1" unheated section at the lead end is required.
Cement potting temperature rating: 1000°F (538°C)
Standard fiberglass lead wire temperature rating: 482°F (250°C)
Standard 10" (254 mm) armor cable over 12" (305 mm) leads. Specify longer cable or leads.
| Dimensions for Type C3 |
| |
Diameter |
|
“A” Dim. |
Armor Cable |
| |
in |
mm |
Fig. |
in |
mm |
in |
mm |
| Hi-Density Cartridge Heaters |
1/4 |
6.35 |
1 |
7/16 |
11.11 |
1/4 |
6.35 |
| 5/16 |
7.94 |
1 |
7/16 |
11.11 |
1/4 |
6.35 |
| 3/8 |
9.53 |
2 |
7/16 |
11.11 |
3/8 |
9.53 |
| 1/2 |
12.70 |
2 |
9/16 |
14.29 |
3/8 |
9.53 |
| 5/8 |
15.88 |
2 |
9/16 |
14.29 |
1/2 |
12.70 |
| 3/4 |
19.05 |
2 |
9/16 |
14.29 |
1/2 |
12.70 |
| 1 |
25.40 |
2 |
5/8 |
15.88 |
1/2 |
12.70 |
| Low-Density Cartridge Heaters |
1/4 |
6.35 |
1 |
7/16 |
11.11 |
1/4 |
6.35 |
| 3/8 |
9.53 |
2 |
7/16 |
11.11 |
3/8 |
9.53 |
| 1/2 |
12.70 |
2 |
9/16 |
14.29 |
3/8 |
9.53 |
| 5/8 |
15.88 |
2 |
9/16 |
14.29 |
1/2 |
12.70 |
| 3/4 |
19.05 |
2 |
9/16 |
14.29 |
1/2 |
12.70 |
| 7/8 |
22.23 |
2 |
5/8 |
15.88 |
1/2 |
12.70 |
| 1 |
25.40 |
2 |
5/8 |
15.88 |
1/2 |
12.70 |
| 1-1/4 |
31.75 |
2 |
5/8 |
15.88 |
1/2 |
12.70 |