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Old 07-23-2014, 09:55 AM   #21
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Quote:
Originally Posted by Kuba View Post
Backup power for home appliances etc. For example if you had a bunch of car batteries and wanted an inverter to run any home appliances of the batteries in case power goes out(110-120v AC). You are good to go and have nothing to worry about.
I get that but the point of my question was particular to this case..

The Op is asking about a particular scenario in his/her RV. They also stated that this is a motor home so the potential for noise on a ground if left floating is very high.

Now I may be understanding something wrong here as well...If by "CPAP" the Op meant "Coffee Pot And Percolator", then by all means forget the ground...It's not worth the trouble..But if the Op was referring to CPAP as in a "Continuos Positive Air Pressure" Breathing Apparatus, then it's worth the trouble to keep any ground noise from damaging this expensive piece of medical equipment.
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Old 07-23-2014, 10:33 AM   #22
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Ok so for my application I don't need to ground it. Everything is good to go. Thanks
The fellow at go power wasn't clear himself about having to ground the inverter.
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Old 07-23-2014, 10:39 AM   #23
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Yes an expensive medical device. So if I break through the insulation on the black wire I can use alligator clips. One on the exposed black and one on the inverter. Then wrap up the black wire with electric tape.
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Old 07-23-2014, 10:45 AM   #24
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If its an expensive medical device i would strongly recommend you get a xantrex, aims or schneider inverter. I would also recommend a PURE SINE WAVE. With one like that you will get the cleanest power for your medical equipment.
Your inverter is already grounded if its a mobile inverter and connected to cars battery
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Old 07-23-2014, 10:47 AM   #25
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Or samlex which is now cotek.
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Old 07-23-2014, 10:48 AM   #26
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Do you have a volt metee?
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Old 07-23-2014, 10:55 AM   #27
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Meter
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Old 07-23-2014, 12:45 PM   #28
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No volt meter. My inverter is pure sine. By connected to car battery do you mean the house (deep cycle) batteries in the Motorhome? There is a DC outlet in the motorhome, I won't be accessing the dash outlet in the cab.
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Old 07-23-2014, 01:16 PM   #29
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Bottom line, you have a pure sine wave inverter that doesn't need a special ground if used in your rv.
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Old 07-23-2014, 01:22 PM   #30
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Thank you
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