Generator Separately derived

[codequestion]

Is the following grounding and bonding shown for the generator okay for non separately derived system? Is it per NEC 2014 Article 250.30?

 

[texie]

Is the following grounding and bonding shown for the generator okay for non separately derived system? Is it per NEC 2014 Article 250.30?

The drawing at first glace looks correct to me for a non-SDS. Why are you asking about 250.30? That is for SDS.
Also, while allowed, the GES shown for the genset is not required for a non-SDS install such as this.

 

[codequestion]

The drawing at first glace looks correct to me for a non-SDS. Why are you asking about 250.30? That is for SDS.
Also, while allowed, the GES shown for the genset is not required for a non-SDS install such as this.

The pdf shows generator has grounding electrode and the generator is non separately derived. NEC 2014 exhibit 250.12 does not generator having any grounding electrode. Should not the grounding electrodes be removed at the generator? Thus main reason for asking.

 

[jap]

The pdf shows generator has grounding electrode and the generator is non separately derived. NEC 2014 exhibit 250.12 does not generator having any grounding electrode. Should not the grounding electrodes be removed at the generator? Thus main reason for asking.

Yes it does show a grounding electrode at the generator, however, it does not show the Neutral bonded to the grounding electrode at the generator.

JAP>

 

[codequestion]

Yes it does show a grounding electrode at the generator, however, it does not show the Neutral bonded to the grounding electrode at the generator.

JAP>

So why does not nec 2014 exhbit recommend this? And whats the purpose of grounding electrode?

Sent from my SM-G935U using Tapatalk

 

[jap]

Better question would be if there was a fault to ground when in generator mode where is the ground to neutral connection from the generator source to clear the fault?


JAP>

 

[texie]

The pdf shows generator has grounding electrode and the generator is non separately derived. NEC 2014 exhibit 250.12 does not generator having any grounding electrode. Should not the grounding electrodes be removed at the generator? Thus main reason for asking.

Did you read what I wrote? The GES as shown is not required but is allowed if connected as shown in the drawing. Some designers and even some manufacturers like them but a GES is not required in this situation.