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Old 08-24-2012, 02:39 PM   #1
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New 45 Amp Converter - Does that mean...

Hi - If anyone knows, I just had the converter changed in our motor home since the old 30 Amp went bad and was messing with other devices. It's a 30 Amp coach. Now that the converter is 45 Amps, would it make sense for me to plug into the 50 Amp power (when available) with an adapter cable and would that provied more Amps?

When the generator is on, the coach can support both AC's, but when plugged into shore power 30 Amp we have not been able to do that without Shedding...

I appreciate your responses...and thanks!

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Old 08-24-2012, 02:46 PM   #2
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Originally Posted by Firstpoet View Post
Now that the converter is 45 Amps, would it make sense for me to plug into the 50 Amp power (when available) with an adapter cable and would that provied more Amps?
Nope, the converter can produce up to 45 amps of 12VDC current. The park power pedestal amperage is based on 120VAC (or, in the case of 50 amp service, 120/240VAC). Two entirely different animals.

For example, IF the converter were 100% efficient (which it isn't), it would take only 4.5 amps of 120VAC to provide 45 amps of 12VDC. Therefore, the larger converter draws a maximum of 1.5 amps more from the AC side than did your 30 amp converter which would have drawn (again, based on 100% efficiency) 3.0 amps from the 120VAC supply.


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Old 08-24-2012, 07:37 PM   #3
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$5 amps on 12 VDC is different from 50 amps on 120VAC. You are mixing apples and oranges here....two totally different circuits.

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