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#121163 - 06/20/05 01:16 PM What's Right Here?
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(submitted via Joe Tedesco)
 Quote:
Recieved call rooftop heating&cooling unit not functioning. Upon inspection found somewhat of a problem. Brand new unit, old disconnect manually closing switch would not work. Actually had to close knife blades with insulated handles of linemans pliers.







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#121164 - 06/20/05 04:43 PM Re: What's Right Here?
e57 Offline
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Registered: 05/27/03
Posts: 2837
Loc: S.F.,CA USA
Whats right? It's off!
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#121165 - 06/20/05 05:32 PM Re: What's Right Here?
Trumpy Offline

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Registered: 07/05/02
Posts: 8540
Loc: SI,New Zealand
What's right here?.
Well, the Phase Sequence in the top pic looks to be OK.
Not a lot else, though.
I see in the bottom pic that this unit has been "modified" since it left the factory, hence the loose Ground wire.
Unbelievable.
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#121166 - 06/20/05 05:36 PM Re: What's Right Here?
electure Offline

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Registered: 12/24/00
Posts: 4226
Loc: Fullerton, CA USA
Actually had to close knife blades with insulated handles of linemans pliers.

I certainly hope you don't mean that you energized this.

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#121167 - 06/21/05 04:56 PM Re: What's Right Here?
pauluk Offline
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Registered: 08/11/01
Posts: 7693
Loc: Norfolk, England
 Quote:
Well, the Phase Sequence in the top pic looks to be OK


Mike,
Take off your Commonwealth thinking cap and put on your American one instead......

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#121168 - 06/21/05 05:56 PM Re: What's Right Here?
techie Offline
Member

Registered: 05/17/05
Posts: 240
Loc: palo alto, ca usa
What's right.. hmm.. they used wirenuts.. beyond that, it looks pretty hopeless..

lots wrong with it..


poor workmanship
romex
lack of chase nipple/bushing
lack of connector on flex
improper phase color (assuming 3 phase)
improper phase sequence
improper grounding
inoperative equipment
improperly sized wiring?
did I mention the poor workmanship?

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#121169 - 06/22/05 11:06 AM Re: What's Right Here?
John Crighton Offline
Member

Registered: 05/16/05
Posts: 172
Loc: Southern California
Too bad the black wire wasn't blue, it would have made pic #1 look so much more patriotic (especially when the fireworks start).

I especially like the way the installer so conscientiously left the romex EGC wrapped in paper (pic #3), so it wouldn't "short" to the box.

On a slightly more serious note... judging from pic #4, is this really 3-phase equipment? The white wire wanders out of the picture, unlike the black and red, which are spliced to the unit primary, so maybe it's really a neutral? If so, why the 3-pole disconnect?

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#121170 - 06/26/05 10:24 AM Re: What's Right Here?
mvpmaintman Offline
Member

Registered: 09/15/03
Posts: 113
Loc: Manhattan, Kansas, USA
this looks suspiciosly like one of the local HVAC contractors work -- they always alter the equipment to make it work better :eek

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