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KD4UPL

Swoope, VA

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Posted: 06/21/20 07:01am Link  |  Quote  |  Print  |  Notify Moderator

I've run my AC unit a lot when using a 30 to 15 adapter and plugged into a 20A circuit. Air conditioning unit, refrigerator on AC, and the converter at the same time never caused a problem. The AC unit pulled about 7 amps running, ref was about 3 amps, converter varies but never that much.

Lynnmor

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Posted: 06/21/20 07:08am Link  |  Quote  |  Print  |  Notify Moderator

"heavy duty extension cord" tells us nothing, it is the wire size that matters.





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Posted: 06/21/20 07:25am Link  |  Quote  |  Print  |  Notify Moderator

Lynnmor wrote:

"heavy duty extension cord" tells us nothing, it is the wire size that matters.
X2 For me it's 10 gauge which are less available and more expensive. Plus I don't care for copper coated aluminum wire.


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campermama

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Posted: 06/21/20 11:55am Link  |  Quote  |  Print  |  Notify Moderator

Ok turn on ac, nothing else running, getting 110 when checked an outlet with volt meter, so I should be ok to run it??


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time2roll

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Posted: 06/21/20 12:32pm Link  |  Quote  |  Print  |  Notify Moderator

Yes 110v in the RV is good to go. Check the adapter for heat in 1 hour. Monitor voltage especially late in the afternoon. 103 to 107 is time to shut down. Then go again 1 hour after sundown.


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pianotuna

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Posted: 06/21/20 08:25pm Link  |  Quote  |  Print  |  Notify Moderator

campermama,

Check the voltage after the unit has been running for an hour, or better yet leave a Kill-a-Watt unit plugged in.


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MFL

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Posted: 06/22/20 12:09pm Link  |  Quote  |  Print  |  Notify Moderator

pianotuna wrote:

campermama,

Check the voltage after the unit has been running for an hour, or better yet leave a Kill-a-Watt unit plugged in.


[image]





campermama

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Posted: 06/22/20 12:10pm Link  |  Quote  |  Print  |  Notify Moderator

I ran it for a while and kept checking the voltage, it was hovering from mid to high 108.
Adapter and cord not even warm.

Hope this is ok to run it. Thanks guys!

time2roll

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Posted: 06/22/20 02:22pm Link  |  Quote  |  Print  |  Notify Moderator

I would let it run without worry at 108.0. Just keep an eye on the voltage in the afternoon.

CA Traveler

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Posted: 06/22/20 02:32pm Link  |  Quote  |  Print  |  Notify Moderator

108V is good. However if there are other loads on that plug the voltage will be lower and perhaps to low.

Others have discovered this when the CB tripped.

Comment: Never think that a 15A plug is adequate without checking. I have 8 plugs on a outside and garage circuit. The circuit is 270' of 14 ga wire on a 15A CB. My saw won't cut a 2x4 on that circuit but the circuit is 100% to code.

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