Why dont we get shock while testing for voltage with a line
tester?
How the bulb inside the tester glows while testing with
tester coz we are totaly isolated from earth or we are not
giving close path for the current to flow?
Answers were Sorted based on User's Feedback
Answer / deepak
inside the tester their is a resistor which limits the current flowing through it hence we dont get shock. n we touch the finger only for complete the ckt.
Is This Answer Correct ? | 30 Yes | 3 No |
Answer / selvakumar
The contact(finger touch) is connected in series with the
pulp with metallic line contact through a resistor. The
resistor drops sufficient voltage such that we wont have a
shock while testing.
Complete isolation of our body from earth is impossible
unless we float in the air.Depending on the insulation
(shoes,bare legs,wood,Rubber mat...,,) to ground the light
intensity varies.
Is This Answer Correct ? | 11 Yes | 6 No |
Answer / phaseneutral
Neon line tester has a high value resistor inside. It protecting you from electric shock.
More explanation watch this video
https://youtu.be/FsV9J3XINWQ
Is This Answer Correct ? | 3 Yes | 2 No |
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Dear Sirs, I am a technical persons.In one of our Electrical Sub- Station, We have installed three numbers of 1250KVA ,11KV/0.415KV Transformer to feed the Factory load. We have found some abnormality. In one of our Transformers the leakeage current from transformer body to earth through earth continuity wire is almost 86 Amp but in other transformer it is (5-10)Amp. where the load current on three phase and neutral are respectively 1360Amp,1400Amp,1370 Amp & 176Amp. So please any technical person help me about the reasons of this situation and how I can rectify the fault. Moreover,I have measured the earth resistance of the Earth continuity wire which is less than 1 Ohm. Thanks Tapas Barua
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