Water cooled jumpers should always be installed with a bend radii ranging from 90° to 180°.
|
|
| Recommended
minimum Bend Radii: 350 MCM - 400 MCM ... 2” 500 MCM - 600 MCM ... 3” 750 MCM - 1000 MCM ... 4” |
Minimum
distance from the end of the hose to the point where the bend radii
should start is as follows: 350 MCM - 400 MCM ... 2 1/2” 500 MCM - 600 MCM ... 3” 750 MCM - 1000 MCM ... 3 1/2” |
It should be pointed out that the jumper life is inversely proportional to its operating temperature; the higher the temperature the shorter the life.
The recommended operating temperature is 55°C or less, but the maximum allowable operating temperature should not exceed 70°C.
Sufficient water flow to insure a low operating temperature is very important.
| MCM | DC Resistance (Ohms per ft. at 70°C) |
|---|---|
| 350 | .0000376 |
| 400 | .0000322 |
| 500 | .0000263 |
| 600 | .0000217 |
| 750 | .0000172 |
| 1000 | .0000130 |
| 1200 | .0000110 |
| 1500 | .0000088 |
| 2000 | .0000066 |