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If a cable insulation is described as rhw you would be able to use the cable for what maximum temperature?
Wiki User
∙ 11y ago
If a cable insulation is described as RHW, you would be able to use the cable for what maximum
temperature
Wiki User
∙ 11y ago
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What is the largest following ampacities that is allowed in a raceway containing thirty-six No10 RHW-2 copper wires in an area where the ambient temperature is 30 C or 86 F?
If a cable insulation is described as RHW, you would be able to use the cable for what maximum temperature? A. 194°FB. 140°FC. 86°FD. 167°F
Can Type TW cable be used in an area that has an ambient temperature of 658C?
There is no wire insulation on this earth that can stand a temperature of 658 degrees C (1268 degrees F.).
What is the current carrying capacity of 185 Sq mm?
As a rough estimate, for medium voltage cables directly buried in earth, I use 2 A / mm^2 for copper conductors, and 1.2 A/mm^2 for aluminum conductors. However, the installed capacity of a cable is mostly dependent on how much heat can be dissipated to its surroundings, and ultimately the maximum temperature of the insulation material. For this reason, it is important to know how the cable will be installed, what conductor is used (Al or Cu), the cable insulation (for both thickness and operating temperature limits), soil thermal resistance (if buried), and if there are other heat sources (cables, process pipes, incident solar radiation, etc) are nearby. There are several cable manufacturers that provide reference current ratings for nominal installations. Check Nexans, Prysmian, or Okonite (US dimensions).
What is LV cable insulation resistance acceptance value?
The minimum acceptable insulation resistance value is calculated using the following formula: Rinsulation= (Vrated + 1 ) x (304.8 / L ) Where: Rinsulation is the minimum acceptable insulation resistance value, in mega-ohms; Vrated is the rated voltage of the cable (typically printed on the cable), in kilovolts; and L is the length of the cable, in meters (if the cable length is in feet, replace the number 304.8 with 1000).
What happens to insulation resistance when decreasing cable length?
eat dick
What is the largest following ampacities that is allowed in a raceway containing thirty-six No10 RHW-2 copper wires in an area where the ambient temperature is 30 C or 86 F?
If a cable insulation is described as RHW, you would be able to use the cable for what maximum temperature? A. 194°FB. 140°FC. 86°FD. 167°F
What is the difference between thermosetting and thermoplastic cable?
The terms are used to categorise cable insulation according to its properties, such as its operating temperature, rather than the ingredients from which it is are made.These terms are now used by the IEE Wiring Regulations to describe insulation formerly described, for example, as 'pvc' (a 'thermoplastic' material) or rubber ( a 'thermosetting' material).
What is the maximum operating temperature for PVC cable?
40Mv/m
How long for a cable to heat up at maximum current rating?
It depends on the surround material, temperature, type of cable, and what you mean by "maximum current rating". Typically a maximum load current rating will be specified, such as 15A; this means you can push 15A through that cable nonstop without damaging it (it won't overheat). You might have a short time rating as well, such as a 4 hour rating, where the cable can handle runing 22A for 4 hours if the surrounding temperature is kept to some value, though this may slightly degrade the insulation. There's also a fusing current rating for many cables. At this current, the cable will eventually melt (like a fuse).
Can Type TW cable be used in an area that has an ambient temperature of 658C?
There is no wire insulation on this earth that can stand a temperature of 658 degrees C (1268 degrees F.).
What is the function XLPE on cable?
as an insulation
What cable is used for electrical services?
Copper cable with PVC insulation
What is the maximum distance permitted between straps on a cable insulation?
Depending on the region and if its commercial or residential its 6 to 9 inches.
What is difference between ACT armored cable and ac armored cable?
Southwire, a manufacturer of this type of cable defines ACT as a multiple conductor thermoplastic insulated cable with steel spiralled interlocking armour. The armour has the appearance of flexible conduit. AC cable is also known as BX cable. Common insulation materials thermoset and thermoplastic as used in AC cable. Type AC cable have different identifiers and insulation type. Type ACTHH has 194 degree (90 degree Celsius) thermoplastic insulation. Type ACTH has 167 degree (75 degree Celsius) thermoplastic insulation. Type AC has thermoset insulation. Type ACHH has 194 degree (90 degree Celsius) thermoset insulation.
Can insulation resistance of cable be checked with a volt meter?
No. A volt-ohmmeter will not check insulation. To check cable insulation you need a special device (called a megger) made for the purpose that imposes a high voltage and measures current leaks.
Why would your positive cable short out?
Bad cable insulation worn off touching ground?
While checking the power cable you notice broken insulation What should you do?
Replace the power cable.
