Help with Generac 9925 proper estop install

D

Dale lee

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Location
Fort myers Fl
Occupation
EC
Hey guys, I know this is not complicated, but cant seem to find any info on the proper wiring/ install for the estop. I have not had to install one yet, and I'm sure I can make it work, just looking for the "proper" way per Generac etc. Also a side note, as I'm looking at this estop and its not lockable in the open position, I'm wondering what's the difference code wise between this and either one of the 2 that come on the generator itself?
 
What do you mean by lockable in the open position?
If you mean Using a lock to make it unopearable you have defeated the purpose.
If you mean it is momentary contact and doesn't require a twist to reset, the generator will restart as soon as you release the button.
 
I haven’t used that one, I usually just get an off the shelf Estop from the supply house, like an ABB.

But all of them are just series wired stop switches. Cut one wire at one of the switches and wires the Estop in series.

And the Estop is not required to be lockable open. The generator is required to be lockable in the off position, which is accomplished by the lockable lid with an off switch inside.
 
Wow, soo sorry guys. Thank you for the replies, apparently my phone logged me out so i never got the notification. and...

445.18(A) says " Each disconnecting means shall be lockable open in accordance with 110.25

Respectfully IMO...

makes sense if i turn off the breaker and lock the lid there is no issue but that would be up to AHJ as that is not really what the code says. that would be like saying i don't need a breaker lock if i just lock the door on the electrical room. makes perfect sense but does not quite satisfy the code. at least in the wording sense, in the intent, absolutely.
 
don_resqcapt19 said:
That does not apply to the emergency stop circuit. That is covered in 445.19 and is independent from the disconnect covered in 445.18.
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Not exactly independent, look at the last sentence of 445.19(A)

We typically satisfy both 445.18 and 445.19 by using a lockable mushroom switch.

Kohler makes one that is really good. I have also seen people use a 30 amp one arm disco which has a lock hasp on the lever, on the control circuit loop.
 
Birken Vogt said:
Not exactly independent, look at the last sentence of 445.19(A)

We typically satisfy both 445.18 and 445.19 by using a lockable mushroom switch.
Click to expand...
That is a design choice by the installer.

However I would never accept a control switch in place of the disconnect required by 445.18. The required disconnect must physically open the circuit conductors.
 
don_resqcapt19 said:
That is a design choice by the installer.

However I would never accept a control switch in place of the disconnect required by 445.18. The required disconnect must physically open the circuit conductors.
Click to expand...

I guess I am conflating what the code says vs what our local AHJs have required.

All generators that I work with large and small have a generator mounted breaker so that should satisfy 445.18.

However our AHJs require a lockable disconnect within x feet of the building main, many companies have put on large knife discos there but I have found the spirit of 445.19 allows the remote lockable control shutdown there so that satisfies the AHJ requirement without actually having to install a bunch of heavy gear on the actual conductors.

But what do you mean you would never accept it, if the code allows it, sounds like an inspector saying "well we like to see x" I don't care what you like, show me in writing.
 
Birken Vogt said:
All generators that I work with large and small have a generator mounted breaker so that should satisfy 445.18.
Click to expand...
Yes, that is the disconnect for the generator, but you will need an additional on at the building to comply with 225.31 since the one in the generator can't be seen from the building. However you said you were using a mushroom switch to comply with both 18 and 19, and that is not possible.
Birken Vogt said:
However our AHJs require a lockable disconnect within x feet of the building main, many companies have put on large knife discos there but I have found the spirit of 445.19 allows the remote lockable control shutdown there so that satisfies the AHJ requirement without actually having to install a bunch of heavy gear on the actual conductors.
Click to expand...
Nothing other than an actual physical disconnect can be used where the code requires a disconnect.
Birken Vogt said:
But what do you mean you would never accept it, if the code allows it, sounds like an inspector saying "well we like to see x" I don't care what you like, show me in writing.
Click to expand...
I am saying the code not permit a control switch to serve in place of a disconnect.
 
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