When grounding a transformer, you have a equipment grounding conductor from the panel feeding the x-former. And if you go from the case to building steel for your GEC. Then, from XO to the case for the SBJ. On the secondary side, you come off of XO to your panel for your nuetral. What is the grounding conductor you take to the panel? Is it a EGC or a EBJ? And how is it sized?
grounding a seperatly derived system
- Thread starter Willie P
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Re: grounding a seperatly derived system
250.30 Grounding Separately Derived Alternating-Current Systems
(A) Grounded Systems ..................................................
(1) System Bonding Jumper An unspliced system bonding jumper in compliance with 250.28(A) through (D) that is sized based on the derived phase conductors shall be used to connect the equipment grounding conductors of the separately derived system to the grounded conductor.
250.30 Grounding Separately Derived Alternating-Current Systems
(A) Grounded Systems ..................................................
(1) System Bonding Jumper An unspliced system bonding jumper in compliance with 250.28(A) through (D) that is sized based on the derived phase conductors shall be used to connect the equipment grounding conductors of the separately derived system to the grounded conductor.
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- New Jersey
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- Journeyman Electrician
Re: grounding a seperatly derived system
As Augie said you need to size the conductor according to the size of the derived or in this case secondary conductors. This means you would use the table 250.66.
As Augie said you need to size the conductor according to the size of the derived or in this case secondary conductors. This means you would use the table 250.66.
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