The following is from The American Electricians Handbook (1942) A Reference Book for Practical Electrical Workers. Terrell Croft, consulting engineer. McGraw Hill Book Company, Inc, New York and London 1942
Electricians often test circuits for the presence of voltage touching the conductors with the fingers. This method is safe where the voltage does not exceed 250 and is often very convenient for locating a blown-out fuse or for ascertaining whether or not a circuit is alive. Some men can endure the electric shock that results without discomfort whereas others cannot. Therefore, the method is not feasible in some cases. Which are the outside wires and which is the neutral wire of a 115/230 volt three wire system can be determined in this way by noting the intensity of the shock that results by touching different pairs of wires with the fingers. Use the method with caution and be certain that the voltage of the circuit does not exceed 250 before touching the conductors. (This and the several paragraphs that follow are taken from “Electrical Engineering
159. The presence of low voltages can be determined by testing. The method is feasible only where the pressure is but a few volts and hence is used only in bell and signal work. Where the voltage is very low, the bared ends of the conductors constituting the 2 sides of the circuit are held a short distance apart on the tongue. If voltage is present a peculiar mildly burning sensation result, which will never be forgotten after one has experienced it. The taste is due to the electrolytic decomposition of the liquids on the tongue which produces a salt having a taste. With voltages of 4 or 5 volts, due to as many cells of a battery, it is best to test for the presence of voltage by holding one of the bared conductors in the hand an touching the other to the tongue. Where a terminal of the battery is grounded, often a taste can be detected by standing on moist ground and touching a conductor from the other battery terminal to the tongue. Care should be exercised to prevent the 2 conductor ends from touching each other at the tongue, for it they do a spark can result that may burn.
RESUSCITATION FROM ELECTRIC SHOCK By Frederick Koliz, MD
1st. Lay the patient on his back, 2 Move the tongue back and forth in the mouth by seizing it with a handkerchief or the fingers, while working the arms to induce respiration. 3. Don’t pour anything down the patient’s throat. 4. Try to cause the patient to gasp by inserting the first and second fingers in the rectum, and pressing them suddenly and forcibly toward the back. 5. If possible, procure oxygen gas, and try to get it into the lungs during the effots at artificial respiration. --205.188.xxx.x
Electricians often test circuits for the presence of voltage touching the conductors with the fingers. This method is safe where the voltage does not exceed 250 and is often very convenient for locating a blown-out fuse or for ascertaining whether or not a circuit is alive. Some men can endure the electric shock that results without discomfort whereas others cannot. Therefore, the method is not feasible in some cases. Which are the outside wires and which is the neutral wire of a 115/230 volt three wire system can be determined in this way by noting the intensity of the shock that results by touching different pairs of wires with the fingers. Use the method with caution and be certain that the voltage of the circuit does not exceed 250 before touching the conductors. (This and the several paragraphs that follow are taken from “Electrical Engineering
159. The presence of low voltages can be determined by testing. The method is feasible only where the pressure is but a few volts and hence is used only in bell and signal work. Where the voltage is very low, the bared ends of the conductors constituting the 2 sides of the circuit are held a short distance apart on the tongue. If voltage is present a peculiar mildly burning sensation result, which will never be forgotten after one has experienced it. The taste is due to the electrolytic decomposition of the liquids on the tongue which produces a salt having a taste. With voltages of 4 or 5 volts, due to as many cells of a battery, it is best to test for the presence of voltage by holding one of the bared conductors in the hand an touching the other to the tongue. Where a terminal of the battery is grounded, often a taste can be detected by standing on moist ground and touching a conductor from the other battery terminal to the tongue. Care should be exercised to prevent the 2 conductor ends from touching each other at the tongue, for it they do a spark can result that may burn.
RESUSCITATION FROM ELECTRIC SHOCK By Frederick Koliz, MD
1st. Lay the patient on his back, 2 Move the tongue back and forth in the mouth by seizing it with a handkerchief or the fingers, while working the arms to induce respiration. 3. Don’t pour anything down the patient’s throat. 4. Try to cause the patient to gasp by inserting the first and second fingers in the rectum, and pressing them suddenly and forcibly toward the back. 5. If possible, procure oxygen gas, and try to get it into the lungs during the effots at artificial respiration. --205.188.xxx.x
