- As per electricity regulation in a mine the length of flexible Conductivity of largest conductor of the cable
- 25% of Conductivity of largest conductor of the cable
- 50% of Conductivity of largest conductor of the cable
- 50% of Conductivity of all power conductors taken together
- 120 dB (A)
- 130 dB (A)
- 140 dB (A)
- 115 dB (A)
- 90 dB (A)
- 85 dB (A)
2 thoughts on “Conductivity of metallic covering of a cable (other than flexible cable for portable/transportable apparatus) used in a mine shall not be less than at all parts & at all joints?”
Conductivity of the armour shall not be less than 50% of the conductivity of the largest core enclosed by the said metallic covering.To satisfy this ,substitute of the galvanised steel wire in armour by required no. of tinned copper wire (wherever required) cable size 3cx120 sqmm (A2XWY) HOW MANY COPPER USE & GI WIRE USE IN THIS CABLE
Conductivity of the armour shall not be less than 50% of the conductivity of the largest core enclosed by the said metallic covering.To satisfy this ,substitute of the galvanised steel wire in armour by required no. of tinned copper wire (wherever required) cable size 3cx120 sqmm (A2XWY) HOW MANY COPPER USE & GI WIRE USE IN THIS CABLE