engineering recuitment PGCIL Diploma Trainee Mock Test 2024 Electrician and Wireman Power Systems Earthing
which of the following for plate earthing G.I. the size of the plate should not be less than ?
1
80 cm × 80 cm × 2.18 mm
2
30 cm × 30 cm × 1.3 mm
3
40 cm × 40 cm × 8.5 mm
4
60 cm × 60 cm × 6.35 mm