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If you measure a small resistance with the megger set in Mega ohm range you get a very tiny and inaccurate result, and If you measure a huge resistance with the megger set to mega ohm range it will bottom out. To get the most accurate measurements you want what you're measuring to be about the same as the scale you're using.

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Q: Why Megger have two ranges ohm and mega ohm?
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What is an electrical OHM?

A measurement of electrical resistance. It is dimensionally equivalent to Volts / Amperes. (Voltage / Current)AnswerAn ohm is the unit of measurement of resistance. Resistance is not affected by either voltage or current, but by the length, cross-sectional area, and resistivity of the conductor.


What value of tester is to be used for measuring insulation resistance of three phase 600V cables?

The typical test equipment for this is a megger. The megger is connected to two conductors at a time to test the insulation between the two.


How do you mega ohm a motor 3 phase?

The megger leads are connected in the following manner. Black lead to motor ground terminal or motor frame. The other lead to one of the phase wires. Meg that coil to ground and note the reading. Do the same with the other two motor leads and note the readings. Look at all of the three reading that you have taken. Engineers like the reading to be above 5 meg. Preferred readings about 2 meg. Motor needs looking after below 1 meg.


What happens if a megger test fails?

If a megger test fails you have a short between the two wires or the wire to ground that you are testing. This short circuit has to be repaired before the equipment is placed back into service.


Can you run 4ohm resistor to make 4 ohms speakers 2 ohm?

Yes, you can safely use a 4 ohm amp with one 8 ohm speaker, but you will not achieve full power. The 4 ohm amp is designed to supply a certain voltage into a 4 ohm speaker. Supplying that same voltage to an 8 ohm speaker will result in half the power, or -3dB. For maximum power, use a 4 ohm speaker, or two 8 ohm speakers in parallel.

Related questions

What is an electrical OHM?

A measurement of electrical resistance. It is dimensionally equivalent to Volts / Amperes. (Voltage / Current)AnswerAn ohm is the unit of measurement of resistance. Resistance is not affected by either voltage or current, but by the length, cross-sectional area, and resistivity of the conductor.


How do you wire two 8 ohm speakers and keep a 8 ohm load?

in parallel No. Two 8 ohm 'speakers in parallel present a 4 ohm load.


How do you wire two 4 ohm speakers into 2 a two ohm load?

Parallel


What value of tester is to be used for measuring insulation resistance of three phase 600V cables?

The typical test equipment for this is a megger. The megger is connected to two conductors at a time to test the insulation between the two.


What is the ohm for the stator on an 85 rm 80?

There are two ignitioncoils on RM 80: 105 Ohm + 175 Ohm


How do you mega ohm a motor 3 phase?

The megger leads are connected in the following manner. Black lead to motor ground terminal or motor frame. The other lead to one of the phase wires. Meg that coil to ground and note the reading. Do the same with the other two motor leads and note the readings. Look at all of the three reading that you have taken. Engineers like the reading to be above 5 meg. Preferred readings about 2 meg. Motor needs looking after below 1 meg.


What happens if a megger test fails?

If a megger test fails you have a short between the two wires or the wire to ground that you are testing. This short circuit has to be repaired before the equipment is placed back into service.


What ohms am i running if i have two 4 ohm speakers hooked up to my amp vs two 2 ohm speakers?

Don't know how you have subs wired but should be 4 ohm load is what your amp will see.


How many mega pixels are there in a mega byte?

they are two completely different things


What is the unit of measurement for ohm?

An ohm is a unit of measurement! It is a measurement of resistance to electrical current.An ohm is the unit to measure the resistance of electricity between two conductors.


Do you win anything with mega millions when you get two number and no mega ball number?

maybe


What is mega diversity?

Two words mega from Greek meaning a quantity and diversity is just that.