Help no ground

[Dfilo456]

I have a Square D 70 amp sub panel in the basement with no ground wire from the main panel. The HVAC contractors hooked up to 20 amp single pole Circuit breakers with putting the ground wires on the neutral bus do I need a separate ground bar in the case. Also how do I fix this can I ground to a water main line that’s grounded

 

[Megawatt]

I have a Square D 70 amp sub panel in the basement with no ground wire from the main panel. The HVAC contractors hooked up to 20 amp single pole Circuit breakers with putting the ground wires on the neutral bus do I need a separate ground bar in the case. Also how do I fix this can I ground to a water main line that’s grounded

Yes you need a ground wire from your main panel and on a sub fed panel never hook ground wires to the neutral bar. That’s is only allowed in the main panel. You need to go to Home Depot or Lowe’s and buy a ground bar and install it in your sub panel, plus pull a # 6 wire from the main to the sub panel for your equipment ground

 

[Dfilo456]

So the back story we had electric furnace and we have gas know and have 4 of these boxes. I was thinking about just eliminating one of the boxes and make those ground wires can I just put green tape on the wires and hook them to the ground bar in the main cabinet. Getting a New line Run would be very costly.