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Old 09-08-2009, 03:25 PM   #1
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Converter size

getting ready to updgrade the converter in our 03' Itasca Sunrise. Looking at putting a Intelli-Power PD9280. Is there an issue going from the exiting 45 amp to the new 80 amp converter? Price is very similar so is more better?
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Old 09-08-2009, 03:31 PM   #2
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The existing wiring between the converter and battery/batteries could quite likely be undersized for peak charging amperage the 9280 could put out if the batteries were drawn down significantly.

By the way - seeing that this is your first post, welcome to iRV2!

Rusty
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Old 09-08-2009, 06:48 PM   #3
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Going from 45 to 80 you may, as Rusty said, need a wire upgrade

Also, you need at least 200 amp hours, I mean at least 200, 250 amp hours would be better, of batteries to use that 9280..

Battery capacity times 0.3 for most batteries, (Less for gel, more for Lifeline AGM's)

so you should have at least 250 amp hours unless they are lifelines, and I'd want at least 200 amp hours if Lifeline.

NOTE: if your system, like mine, also charges the chassis battery,, Do not forget to include it in your amp hours.. I have a 9180 with wizard (Effectively the same as the 9280) and only a pair of U-2200's That's 230 amp hours or there about,, NOT counting the chassis battery (About another 80 or so) so I"m good. Very good.. I need to water those U-2200's... about every 12-14 months
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Old 09-08-2009, 08:59 PM   #4
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There is a good chance there is a 45-50 amp circuit breaker or fuse somewhere between the converter output and the battery as well. A big charger will trip that breaker if the batteries are low and the charger starts pouring in 60-80 amps.
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