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#95170 - 09/02/05 02:24 AM what were they thinking  
watersparkfalls  Offline
Member
Joined: Mar 2005
Posts: 220
Washington...Not DC
ok i was at an apartment complex today and noticed in the carport(which does have close to a 8/12 pitch) that the electrician used regular 4 square boxes/concentric knockouts with wp connectors and couplings, round mudrings and even plain old porcelin's for light.

reminded me of Homer's trademark "doh!" -- usually accompanied by a Simpsonesque slap to the forehead. not the worst thing ever done but notable. wheres a camera when you need one?

h20


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#95171 - 09/02/05 08:13 AM Re: what were they thinking  
George Little  Offline
Member
Joined: Jan 2004
Posts: 1,489
Michigan USA
They were probably thinking let's save some money and put in a safe code compliant system. From the way you described it they did. Assuming it's not a wet location.


George Little

#95172 - 09/02/05 03:43 PM Re: what were they thinking  
watersparkfalls  Offline
Member
Joined: Mar 2005
Posts: 220
Washington...Not DC
george if they were going to save money wouldn't set screw fittings be cheaper then wp or now raintight.
aren't 4 square boxes limited to dry locations?
hence a carport with open sides would be deemed damp which would go back to my original "what were they thinking?"


h20


#95173 - 09/02/05 07:54 PM Re: what were they thinking  
e57  Offline
Member
Joined: May 2003
Posts: 2,876
S.F.,CA USA
Funny, just saw a simular band spanking new install on the back of a supermarket remodel in WET location. No doubts about it. RT connectors to a 4S deep and 4S blank. Laughable.


Mark Heller
"Well - I oughta....." -Jackie Gleason

#95174 - 09/02/05 09:14 PM Re: what were they thinking  
renosteinke  Offline
Cat Servant
Member
Joined: Jan 2005
Posts: 5,316
Blue Collar Country
Using regular "indoor" boxes in an aoutoor, protected area is allowed by the code...BUT...

I don't do it, for a reson not mentioned in the NEC...Insects. There is something about trying to remove a device, and seeing all those tiny little legs pulling it back in!
Seriously, I have opened far too many boxes and fixtures, and then found either wasp or spider nests.


#95175 - 09/03/05 07:15 AM Re: what were they thinking  
iwire  Offline
Moderator
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
Quote
No doubts about it. RT connectors to a 4S deep and 4S blank. Laughable.


Then you would have a sore belly from laughing around here. [Linked Image]

A very common job specification around here is the mandated use of steel compression fittings on all EMT installations. The fact that they are in dry locations and entering NEMA 1 enclosures has no bearing on this job spec.

I have been told that these fittings provide better bonding but I have no idea if that is a fact or urban legend.

Also when you run EMT for fire alarm systems in RI you must use steel compression fittings with insulated throats.

Can be a real bummer if you do a whole job in set screw fittings only to find out compression fittings where required.

And no it did not happen to me but I do know people it happened to. [Linked Image]


Bob Badger
Construction & Maintenance Electrician
Massachusetts

#95176 - 09/03/05 09:03 AM Re: what were they thinking  
Ron  Offline
Member
Joined: Mar 2002
Posts: 582
White Plains, NY
Bob,
Is raceway required for fire alarm systems in RI? Even NYC now allows cable (no raceway) above a height deemed out of the range for physical damage.
I also typically specify steel compression fitting for use with EMT in critical type installations.
I've never seen formal test results, but I spec steel vs. Die Cast Zinc for strength and I spec compression vs. set screw for electrical continuity.


Ron

#95177 - 09/03/05 09:25 AM Re: what were they thinking  
iwire  Offline
Moderator
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
Ron

RI used to be almost all raceway for fire alarm systems. Recently they have been loosening up and allowing MC. However the MC must have the RI required insulation colors.

The local large supply houses stock the color combinations that are normally used.

Black and Red

Blue and White

Yellow and Orange

etc.

Bob

[This message has been edited by iwire (edited 09-03-2005).]


Bob Badger
Construction & Maintenance Electrician
Massachusetts

#95178 - 09/04/05 04:40 AM Re: what were they thinking  
e57  Offline
Member
Joined: May 2003
Posts: 2,876
S.F.,CA USA
Bob the reason it was laughable was it was clearly a wet location. Not only outside, but under a rain gutter. I have to get a picture. Even when not raining its wet, its near white out of fog right now. And I'll bet the inside of that box is dripping wet.


Mark Heller
"Well - I oughta....." -Jackie Gleason


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