Thanks for the replies. I will go with 13.2kV as the voltage to ground.
I also found this in the NEC handbook.
"ungrounded system is used, the voltage to ground (by definition) is the
greatest voltage between the given conductor and any other conductor
of the circuit. For example, the voltage...
Hello
We have a delta to wye transformer 13.2kV to 480/277V.
I was looking at the working distance from the transformer front to a planned switchgear front. An NEC screen shot of 110.34(A)is provided, so my question is: what would be considered voltage to ground on the delta side of the...
The recorder was set to sample every second. If needed, the ATS can be upgraded along with conductors and the OCPD.
The question is whether to size based on max or average. waross would you still go with max even if its 1 or 2 max second duration?
Some ATS are to be replaced, so load recoding was performed. The load recorded was set to a sample current every second but I have gotten used to the the sample rate set every 5 minutes. The load recorded has the option to display 5 and 1 second sample rate. The issue I have is that in the 1...
wcaseyharman and b_gibb you guys are correct about using a PLC I was overcomplicating things. Apparently, Eaton offers A PLC just for this scenario that integrates into their switchgear. To prevent user error, The DS LVPCB has push buttons, so maybe we can cover the on and off buttons and add a...
Existing system:
Low-voltage 480V/277 Switchgear with kirk-keys on the Main-tie-main. This system does not have an automatic transfer scheme.
New Design:
480/277 switchgear with main-tie-main and use magnum DS 3000A CB. I would like to implement an automatic transfer scheme, so which control...
