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Can Type TW cable be used in an area that has an ambient temperature of 658C?
Wiki User
∙ 8y ago
There is no wire insulation on this earth that can stand a temperature of 658 degrees C (1268 degrees F.).
Wiki User
∙ 8y ago
Anonymous
No
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Do you derate for a three phase line and load conductors in the same conduit?
Yes, there will be a de-rate applied to this type of installation. In the electrical code book the amperage rating of conductors is for allowable ampacities for not more than three copperconductors in raceway or cable. This is based on an ambient temperature of 30 degrees C. If the ambient temperature of the conductors where the raceway is installed is over 30 degrees C the conductor amperages have to be reduced. Where the number of conductors are from 4 to 6 conductors in a raceway, the conductors amperage has to be reduced by .8
What Type act armored cable may be bent to a radius of not less than times the deameter of the cable?
4
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What type of armour cable to you need to run underground to your garage?
Armoured cable is not rated for underground installations. You have to use a cable with a designation for direct burial or wet and damp locations.
Which type of transmission line will have max value of characteristic impedence?
coaxial cable
Can type tw cable be used in an area that has an ambient temperature of 65c?
No
Formula for working out cable size?
There is actually no specific formula used to work out cable size. In order to determine the type of cable you need and the size you need, you need to know the source of the supply, the voltage of the system, the ambient temperature, and the method you plan on laying out the cable.
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That depends on the refrigerant type and ambient air temperature.
What kind of differential fluid type in your 96 Nissan 240sx?
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How much capcacity of mm size four core cable well be used in running 1kw three faze motor?
Depends on the type of cable, the method of fixing the cable, the ambient temperature and the way the cable has been run to the motor (i.e in trunking, Conduit) Bascially a cable with a current carry capasity of 2 amps should be fine (1.45 amps with power factor of unity and no de-rating factors). Remember 1mm cable can carry at least 8 amps. Also please improve your English when asking stupid questions!!
How many amps taken 1 sq-mm copper cable?
That depends on what temperature-rise you'll accept, and on what type of coating or jacketing surrounds the cable, and on the airflow around the cable.
Do you derate for a three phase line and load conductors in the same conduit?
Yes, there will be a de-rate applied to this type of installation. In the electrical code book the amperage rating of conductors is for allowable ampacities for not more than three copperconductors in raceway or cable. This is based on an ambient temperature of 30 degrees C. If the ambient temperature of the conductors where the raceway is installed is over 30 degrees C the conductor amperages have to be reduced. Where the number of conductors are from 4 to 6 conductors in a raceway, the conductors amperage has to be reduced by .8
What is the uses of mineral insulated sheathed cable?
The prime application for the use of MI cable is in very high ambient temperature locations. The cable is also used in areas that are considered explosion proof. There is an explosion proof gland that is installed on the end of the cable that connects directly into the explosion proof device without the need of a junction box. The cable was also used in fire alarm systems when the specifications stated that the alarm had to operate for a certain amount of minutes even when the alarms cables were in direct contact with the flames of a fire. In the trade this type of cable is known as Pyrotenax.See related link below.
