Answer / susant kumar acharjya

you can measure the earth pit through meggar.
take two rod of 45 cm . one rod erect 30 mtr from earth pit and connect a cable with that rod and the second end connect at earth of meggar,2nd rod 90 degree to first rod at the distance of 40 mtr from the earth pit again connect with cable and the 2nd of with meggar guard. two probe of meggar connect to the earth pipe . rotate the meggar u wil get les than 1 ohm

Answer / p.seenichamy

The minimum valus of single earth pit is less than 1 ohm

Answer / mahaveer sahu

Earth pit value can be measured by digital earth tester and the minimum value of single earth pit should be less than 2 ohm

bit confused - am i correct in thinking that to determine line to line voltage in a star config 110v 3 phase 4 wire distribution system i would use a voltmeter? I have a circuit configured as an unbalanced load, consisting of three incandescent lamps (1x40w, 1x60w, 1x100w - all 110v rated)connected in a star configuration to a 110v 3 phase 4 wire distribution system. I want to find out what types of meters i would use to obtain: a) each line to line voltage b) the line to neutral voltage across each load c) current flowing in each line and load d) current flowing in the neutral conductor e) power supplied to the loads im assuming i would be using ammeters in series along each line and voltmeters in parallel across each line to neutral? Also how could i predict these meter readings before taking them and with which formulae? Any help would be greatly appreciated A.

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