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#108856 - 12/23/03 02:39 PM No-Blow Fuses
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Registered: 10/07/00
Posts: 3142
Loc: NY, USA


 Quote:
Here are two pictures of a piece of equipment that came over from another one of our buildings. It's an air dryer for compressed air. As you can see, they didn't want to use fuses, so they came up with a more "practical" idea!!! We had the company photographer take these pictures so we could have this mess documented in case there were any problems with the equipment.
Unreal!!!

I, as well as my co-workers love your forums on code violations. It's unbelievable what some people will do.

-Joe Martell

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#108857 - 12/23/03 05:39 PM Re: No-Blow Fuses
Bjarney Offline
Moderator

Registered: 04/10/02
Posts: 2561
Loc: West-Southern Inner-Northeast ...
Those clips have to be stretched or squeezed...9/16-inch copper tubing doesn't exist.

But, there is a correct product for the job—Bussmann "NTN-R30" for 30A 250V swithces.




[This message has been edited by Bjarney (edited 12-23-2003).]

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#108858 - 12/23/03 06:42 PM Re: No-Blow Fuses
joemar4 Offline
Junior Member

Registered: 12/23/03
Posts: 1
Loc: Lake Ronkonkoma, NY USA
Let me make it clear that this is how the equiment came over from one of our other buildings and this is what we found when we came to do the electrical install. This is NOT how we left it. We wanted it documented that the equipment arrived like this, hence we had the company photographer take pictures.
We did the install and corrected any and all pre-existing violations, including changing the disconnect and installing the proper size fuses.
My point was how they could have run this equipment like this in our other building located in New Jersey.
Joe

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#108859 - 12/23/03 07:17 PM Re: No-Blow Fuses
electricman2 Offline
Member

Registered: 11/09/03
Posts: 234
Loc: Thomasville, NC USA
I see a red, blue, black and white wire entering the top of the disco, but what appears to be one white wire leaving the short piece of EMT. Am I missing something?
_________________________
John

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#108860 - 12/23/03 07:38 PM Re: No-Blow Fuses
Trumpy Offline

Member

Registered: 07/05/02
Posts: 8540
Loc: SI,New Zealand
electricman2,
That White wire wouldn't be a neutral would it?.
That terminal block at the bottom of the disconnect looks like it's segregated from the metal panel, would this be where the neutral joins with another wire that loops down to the receptacle below?.
_________________________
Let's face it, these days if you're not young, you're old - Red Green grin

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#108861 - 12/24/03 12:07 AM Re: No-Blow Fuses
Big Jim Offline
Member

Registered: 07/18/03
Posts: 377
Loc: Denver, CO USA
It looks like kind of a sleazy setup overall but was a fused disconnect required where the equipment was previously installed?

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#108862 - 12/24/03 08:13 AM Re: No-Blow Fuses
pauluk Offline
Member

Registered: 08/11/01
Posts: 7693
Loc: Norfolk, England
 Quote:
I see a red, blue, black and white wire entering the top of the disco, but what appears to be one white wire leaving the short piece of EMT. Am I missing something?


Looks to me as though the receptacle below the disco is tapped from the red phase and the main equipment is wired 208V delta with no neutral.

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#108863 - 12/24/03 03:19 PM Re: No-Blow Fuses
mvpmaintman Offline
Member

Registered: 09/15/03
Posts: 113
Loc: Manhattan, Kansas, USA
I've seen this done alot out here in the land of OZ. Usually on a roof mounted air handler. Found out that it was a crew run by the guy who is now my boss. He used to do this so that they could keep the units running and find the short when the wire burned up.

BTW, I am looking for other employment.

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#108864 - 12/26/03 04:54 AM Re: No-Blow Fuses
electure Offline

Member

Registered: 12/24/00
Posts: 4226
Loc: Fullerton, CA USA
Per Paul
>The receptacle below the disco is tapped >from the red phase.
I'd agree, but what's the little box in between the disco and the recp?
Does that contain a 5 amp Edison base fuse for the recp?

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#108865 - 12/26/03 12:20 PM Re: No-Blow Fuses
Bjarney Offline
Moderator

Registered: 04/10/02
Posts: 2561
Loc: West-Southern Inner-Northeast ...
The middle box looks like a Bussmann SOU listed at http://www.bussmann.com/library/bifs/1129.pdf

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