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Old 09-26-2015, 11:08 PM   #1
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Charging from 15/20amp circuit

The coach has been in a workshop for 10 days. I suspect the parasitic charge will have drained down the batteries somewhat.
Can I plug the coach into any 15 amp extension cord.
Should I assume all power points are 120v??
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Old 09-26-2015, 11:54 PM   #2
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Not sure what you are really asking as you are mixing amps and volts in your question. Regardless, you can plug into any standard 120 volt outlet to top off the charge. A 15/20 amp circuit is all you need.

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Old 09-27-2015, 12:30 AM   #3
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If you have a large inverter-charger and/or battery bank, it could be hampered by a long 15amp cord. I would go into the settings of your inverter-charger and temporarily reduce the max. rate of charge.
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Old 09-27-2015, 10:46 AM   #4
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Yes you can plug to any 120v outlet (with a suitable plug adapter, of course). And yes you can use an extension cord, as long as the wire size is adequate for 15A. Make sure it is at least a 14 gauge cord (the typical orange outdoor cord is only 16 gauge - not enough). Commercial shops probably have larger gauge cords, though.

If the batteries are very low, your charger may initially surge enough current to exceed the 15A capacity and trip the breaker. Make sure there is nothing else on, either in the coach or sharing the circuit for that shop outlet. Your inverter/charger probably has a setting that can limit the max amps it draws - check the inverter manual for how to set it to something less than 15A.
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Old 09-27-2015, 05:21 PM   #5
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Thanks all
I've got a 30 amp lead about 20 meters so that works
I'll see what these got I can plug it into
Being a Heavy Truck workshop, hopefully the outlets won't be daisy chained


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Old 09-27-2015, 05:26 PM   #6
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As gruelens says, if your inverter controller allows it, you can set it up to allow only a certain current to go to the battery charger. For my Xantrex Freedom Inverter with Link 2000 controller that mode is called power share.

When I 'camp' at my daughter's, I set my charger to only take a max of 5 amp from the 110 volt for the charger. This keeps me from blowing one of her breakers but still allows the charger to put about 50 amps into the batteries.
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Old 09-27-2015, 05:28 PM   #7
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Steve, spend $10 at a big box store and buy a Kil-a-Watt device. Best money you can spend to make sure that your coach is getting the correct voltage. It plugs into any outlet and will ensure that your charger is getting the right power.

It's primary uses are to test how much power appliances use; from TVs to fans to whatever, but it's the best poor-man's volt-drop device out there.

...er, not implying that you're poor, Man, it's a saying...
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Old 09-27-2015, 08:54 PM   #8
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Quote:
Originally Posted by bamaboy473 View Post
Steve, spend $10 at a big box store and buy a Kil-a-Watt device. Best money you can spend to make sure that your coach is getting the correct voltage. It plugs into any outlet and will ensure that your charger is getting the right power.

It's primary uses are to test how much power appliances use; from TVs to fans to whatever, but it's the best poor-man's volt-drop device out there.

...er, not implying that you're poor, Man, it's a saying...


Ha ha
Well after this week I'll be poor
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When you turn that into Aussie dollars at 66c after bank fees it's a stack


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Old 09-28-2015, 12:46 PM   #9
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Just to add what was already mentioned. Select 'Shore' on your controller and dial back to 15amps so you don't overload the outlet or extension cord.
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Old 09-28-2015, 03:51 PM   #10
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Can you plug into a 15/20 amp for charging ?
YES but make sure you TURN OFF every load other than the converter, NO A/C, no water heater, No fridge (or lock it on gas).

On my coach I can "Break out" one converter and feed it 15 amps.

Question 2: Can you assume all power ports are 120 volt.. NO.. Though if the shop is code 120 and 240 volt outlets should be different,, Still it is NEVER safe to assume that the outlet is 120 volt..
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