[TechAssist] Re: Just One Question
- From: "Damon" <damon101@xxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 12 Aug 2004 08:30:51 -0500
Yeah 220 is a single phase that is center-tapped to provide 110. If you
actually hooked up the 220 service using a tap off of the 3 phase line (can
you do this?) then you may have reversed the polarity......but I would think
the polarity reversal would have occurred at the 3 phase junction , not the
220 junction at the box you installed.
Another possibility is that the 220 load being mostly resistive could induce
a "phase shift" if it is tapped off of the 3 phase. This shift could
possibly cause motor reversal.....but hey remember who you're asking this
question to.....TV Techs.
Was this a whole new box, or was it originally wired beforehand and fully
functional before you replaced it???
Damon Brunger
Telrad Electronic Services
Ft Wayne, IN 46815
----- Original Message -----
From: "Doug Keller" <dek@xxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, August 12, 2004 6:48 AM
Subject: [TechAssist] Re: Just One Question
| Check to ensure that you put the wires back correctly. Sounds reversed.
| 3 phase operates differently from a standard 220 service.
|
| Doug Keller
| Wis-Kel Electronics
| 101 Freeland Ave.
| Terra Alta, WV
| USA 26764
| dek@xxxxxxxxxxxxxx
| dek@xxxxxxxxxxxxxxx
| http://www.tech-assist.org
| "Learn from the mistakes of others, because you
| won't live long enough to make them all yourself"
|
|
|
|
|
| GOMDWIL@xxxxxxx wrote:
|
| >If you replace the main breaker box on a public building and when you
turn the power back on what would cause a three phase air condition to start
running backwards after the installation?
| >-There was no problem before. Just curious ,
| >GRADY
| >
| >WILSON'S TV SERVICE
| >GOMDWIL@xxxxxxx
| >
| >
|
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