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Voltage gauge question

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s.hamer(at)verizon.net
Guest

Posted: Sat Mar 06, 2010 4:42 pm Post subject: Voltage gauge question

I have an Electronics International Volts/Amp  gauge in my RV-6.  It was working fine till I decided to "fix" what I  thought was too small of wire through the E-Buss switch circuit.  I'm wired  per figure Z-11 and the Voltage gauge is powered off of the  E-Buss.

 Here's what's happening.  With the master on,  the voltage reads 11.4 (through the diode).  When I turn on the E-Buss  switch, voltage goes to 12.1.  With just the E-Buss on and the master off,  voltage reads zero.  It didn't do this before I "fixed" it.  What have  I done?

  

 Thanks,

  

 Steve Hamer

  

    [quote][b]

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mrspudandcompany(at)veriz
Guest

Posted: Sat Mar 06, 2010 5:36 pm Post subject: Voltage gauge question

[b]I have an Electronics International Volts/Amp gauge in my RV-6.  It was working fine till I decided to "fix" what I thought was too small of wire through the E-Buss switch circuit.  I'm wired per figure Z-11 and the Voltage gauge is powered off of the E-Buss.[/b]  

    

[b]Here's what's happening.  With the master on, the voltage reads 11.4 (through the diode).  When I turn on the E-Buss switch, voltage goes to 12.1.  With just the E-Buss on and the master off, voltage reads zero.  It didn't do this before I "fixed" it.  What have I done?[/b]  

    

    

    

[b]Steve Hamer[/b]  

    

   

  [quote] What did it do before you fixed it? Roger[b]

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s.hamer(at)verizon.net
Guest

Posted: Sat Mar 06, 2010 9:10 pm Post subject: Voltage gauge question

Before I  fixed it, with the E-Buss on and the master off, the voltage was around  11.7.  This seemed too low so I figured the wire in that circuit might be  too small so I increased it slightly.  That's the only change.  If I  put my multimeter on the the voltage meter connection with the E-buss only on,  it reads 12.3 while the gauge reads 0.

  

 Steve

 [quote]    	  Quote: 	
		   What did it do before you fixed it? Roger



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user9253

Joined: 28 Mar 2008
Posts: 1927
Location: Riley TWP Michigan

Posted: Sun Mar 07, 2010 5:53 am Post subject: Re: Voltage gauge question

The vast majority of electrical problems are bad connections, so check those.  Pull on wires to make sure they are not broken.

  The symptoms point towards a bad voltmeter (or its connections).  Connect your hand held meter to the exact same two points that the panel meter is connected to, both hot and ground.  If they do not read approximately the same, then one of them is lying.

Joe

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