SW has discovered lightning [RE-wrenches]

[William Korthof]

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Wow,

Could it be, another reason to switch OUT the inverter
to another brand that gives you BACK the reliability
and performance you want and expect?

/wk


At 10:00 AM 5/17/2004, Ray Walters wrote:


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>
>Hopefully this is a related subject....
>
>I just installed a SW2548+ and found that I had 0.35 amps AC current 
>running down the chassis ground, Voltage when I unbonded the nuetral was 
>60 vac Ground to nuetral. No, I didn't have nuetral bonded in more than 
>one place , ground loops, etc. These same measurements where with 
>everything AC disconnected from the inverter at its output terminals. NO, 
>the amps didn't dissipate with time unloading a filtering capacitor . It 
>was steady. Meter was a Fluke 89 inserted in the circuit.
>
>Trace said it was normal operation of the filtering, and that if I 
>measured it with a clamp on meter it would "disappear". Yea I said because 
>clamp-on meters aren't accurate below an amp....
>I said that the NEC doesn't allow current to flow on uninsulated ground 
>wires. They told me to look at the inverter again to confirm if it had a 
>UL sticker on it.....
>
>So what do you think, is there a problem, or should I put my meter away 
>and be quiet? ( I found the "problem", when I disconnected  the inverter 
>chassis ground for a moment and drew a healthy arc.)
>Seems to have some fire hazard / electrocution potential, especially when 
>we're supposed to ground 12 vdc etc, etc..  Is this another: "Trace payed 
>UL enough to pass this, but we can't do the same thing in the field deal"?
>
>Ray
>
>>I have done with my inverter that I suppose not is not kosher is not ground
>>the chasis to any ground whatsoever. It is like the inverter shuts off to
>>protect itself.
>>
>>SUNcerely,
>>Frank Fowler
>
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