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#104602 - 03/18/03 03:13 AM Loose Connection Here at Wall AC Unit  
Joe Tedesco  Offline
Joined: Oct 2000
Posts: 2,749
Boston, Massachusetts USA
The piece of flexible metal conduit here was very loose!

I want to know if this unit comes with a cord that is supposed to be plugged into a receptacle?

[Linked Image]

Joe Tedesco, NEC Consultant

2017 / 2014 NEC & Related Books and Study Guides

#104603 - 03/18/03 11:25 AM Re: Loose Connection Here at Wall AC Unit  
Joe Tedesco  Offline
Joined: Oct 2000
Posts: 2,749
Boston, Massachusetts USA
VII. Provisions for Room Air Conditioners

440.60 General.

The provisions of Part VII shall apply to electrically energized room air conditioners that control temperature and humidity.

For the purpose of Part VII, a room air conditioner (with or without provisions for heating) shall be considered as an ac appliance of the air-cooled window, console, or in-wall type that is installed in the conditioned room and that incorporates a hermetic refrigerant motor-compressor(s).

The provisions of Part VII cover equipment rated not over 250 volts, single phase, and such equipment shall be permitted to be cord-and-attachment-plug-connected.

A room air conditioner that is rated three phase or rated over 250 volts shall be directly connected to a wiring method recognized in Chapter 3, and provisions of Part VII shall not apply.

What About this new rule? Has anyone found the LCDI or AFCI in the cord yet?

440.65 Leakage Current Detection and Interruption (LCDI) and Arc Fault Circuit Interrupter (AFCI).

Single-phase cord-and-plug-connected room air conditioners shall be provided with factory-installed LCDI or AFCI protection.

The LCDI or AFCI protection shall be an integral part of the attachment plug or be located in the power supply cord within 300 mm (12 in.) of the attachment plug.

[This message has been edited by Joe Tedesco (edited 03-18-2003).]

Joe Tedesco, NEC Consultant

#104604 - 03/18/03 07:24 PM Re: Loose Connection Here at Wall AC Unit  
HotLine1  Offline

Joined: Apr 2002
Posts: 6,803
Brick, NJ USA
Is this device a part of a split system like a "Sanyo" unit, with a remote compressor??
If so, then it must be hard wired, and it is not supplied with a cord & plug.


#104605 - 03/18/03 07:39 PM Re: Loose Connection Here at Wall AC Unit  
John Steinke  Offline
Joined: Apr 2001
Posts: 518
Reno,Nv., USA
If I had to make a wild guess, I would guess that the flex was simply slipped over the supplied cord, as a means to reduce theft.

#104606 - 03/19/03 12:49 AM Re: Loose Connection Here at Wall AC Unit  
SvenNYC  Offline
Joined: Aug 2002
Posts: 1,691
New York City
A one-chair barbershop opened in a store inside a subway station near work some months ago.

The man has a wall mounted fan-forced air heater hanging from a bracket in the wall. You know the type - brown rectangular box with a louver...looks like a gas heater but there's no gas pipe.

It's hardwired to a stump of AC coming straight ouf of a hole in the wall, similar to what Joe has posted. The difference is there is no box.

The cable just comes straight out of the hole and is wired directly into the terminals of the heater.

Somehow I don't think this is kosher.... [Linked Image]

#104607 - 03/19/03 01:45 AM Re: Loose Connection Here at Wall AC Unit  
Joe Tedesco  Offline
Joined: Oct 2000
Posts: 2,749
Boston, Massachusetts USA

This unit was in a hotel room and is one piece with no remote parts.


May be true, but I was not going any further and just took the picture.

The unit cooled my room while away in Arizona last week .. temperature was around 80 degrees outside!

Joe Tedesco, NEC Consultant

#104608 - 03/19/03 07:55 AM Re: Loose Connection Here at Wall AC Unit  
maintenanceguy  Offline
Joined: Dec 2001
Posts: 300
Southern NJ, USA
Most of these PTACS (package terminal air conditioners) are available with several "power cords" from the manufacturer. All have a nylon pin and sleeve plug on the air conditioner end that only fits that a/c and you can get all sorts of plugs on the other end. In fact, some of these units are multi-voltage and buying different cords let you run them at different voltages.

And you can order them with a whip of greenfield already attached to a box to cover the nylon a/c connector and wires already pulled. I suspect that's what this is.

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