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When carrying out an insulation resistance test on a walloven with mineral insulated metal sheathed heating elements the minimum permitted insulation resistance is?
Wiki User
∙ 12y ago
0.1M ohms
Wiki User
∙ 12y ago
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Is 200Mohms an acceptable result when carrying out an insulation resistance live-live test on a shower block?
If you have 200 megohms on an insulation test of a conductor it is more than enough to feel safe about applying a voltage to the conductor with out it shorting to ground.
Why would never measure resistance in a circuit carrying a current?
If the circuit is carrying current then that means that the load (resistance) is in the circuit. if an ohm meter is connected in the live circuit then there would be some voltage drop at the ohm meter but as the meter has very less resistance, this would damage the instrument.
Why insulation is needed on current carrying conductors?
To prevent the wire from getting short circuited to ground or even to other wires.
What happens if wire insulation is weak?
Depending on the voltage potential that the wire is carrying, an insulation breakdown could lead to a short circuit. If this condition occurs then the circuits over current protection should trip the circuit off line.
How is the star and delta timer connector protected?
As are most current carrying components in a control panel, they are protected from grounding out by having insulation wrapped around them.
Identify one item that needs to be disconnected prior to carrying out insulation resistance tests?
The voltage source needs to be disconnected prior to carrying out insulation resistance tests. Disconnect any electronic devices like Variable Frequency Drives, Soft Starters etc. These devices are likely to get damaged if meggar test is done keeping them in circuit.
Is 200Mohms an acceptable result when carrying out an insulation resistance live-live test on a shower block?
If you have 200 megohms on an insulation test of a conductor it is more than enough to feel safe about applying a voltage to the conductor with out it shorting to ground.
Does the insulation of wires affect its quality?
yes and no The problem is that the Word "Wire" refers to the both the metal core and the Wire as a conductor and insulation package. Another problem is what you mean by "quality". What definition are you using? The insulation is critical to determining the use and safety of a wire. The resistance of the metal wire is not affected by the insulation, but its ability to dissipate heat while carrying high current is.
What is effect of resistance in heat production in a current carrying conductor?
resistance will be high
What stabilizes a population and its carrying capacity?
environmental resistance
Why do pipes carrying the steam to the radiator need to be insulated?
Other wise heat loss will occur and the radiators wont be as hot.
Why do the pipes carrying the steam to the radiator need to be insulated?
Other wise heat loss will occur and the radiators wont be as hot.
Where could one find an insulated mug?
An insulated mug, useful for carrying hot or cold beverages, can be purchased at most department stores and home goods stores. Examples of such stores include Walmart, Target, and Bed, Bath and Beyond. Promotional insulated mugs with logos can be purchased online at Branders.
Why would never measure resistance in a circuit carrying a current?
If the circuit is carrying current then that means that the load (resistance) is in the circuit. if an ohm meter is connected in the live circuit then there would be some voltage drop at the ohm meter but as the meter has very less resistance, this would damage the instrument.
Why current carrying wires become hot?
Resistance. Need larger gage wire
Why insulation is needed on current carrying conductors?
To prevent the wire from getting short circuited to ground or even to other wires.
Why human body has more resistance than metal?
Human body has more resistance than metal because it has less conductor for carrying electrons.
