grounding

Status
Not open for further replies.
vvalerio said:
What are the requirements necessary to properly ground a transformer.
Click to expand...

Most of those requirements are spelled out in 250.20 and 250.30.

More info is always helpful. In the end are you shooting for grounded or ungrounded system?
 
I understand the article NEC related to the question; however, the contractor is making me understand that the NYC code is not specific concerning grounding and he is using the ground connector from the input feeder to the transforemer. He is not grounding the secondary; however, he is using this ground for the neutral.

Is this allowable???
 
I want to understand.

The primary feeder has a EGC, he wants you to use the EGC for the secondary GEC.

That the gist of it?

EGC=equipment grounding Conductor
GEC Grounding Electrode Conductor.
 
transformer grounding

transformer grounding

That's correct. What confuses things even further, the NYC code of 1999, in which the design is based on, states that the grounding connection shall be made at the source of supply, transformer, generator or the [U]first disconnect controlling the system.[/U]
 
vvalerio said:
That's correct. What confuses things even further, the NYC code of 1999, in which the design is based on, states that the grounding connection shall be made at the source of supply, transformer, generator or the [U]first disconnect controlling the system.[/U]
Click to expand...

This is NEC also, 250.30(A)(1).

He cannot terminate the load grounded conductor to the line, this will disable a SDS.

Also notice 250.30(A)(3) grounding the SDS, "this connection shall be made at thes same point on the SDS where the system bonding jumper is installed."
 
Status
Not open for further replies.
Top