Power Question - Coffee Grinder - Fiberglass RV


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Old 08-28-2014, 08:31 AM   #1
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Power Question - Coffee Grinder

I want to grind flax seeds. At home I use a small, electric coffee grinder. It is 120v/200 watts. I just plugged it into my kill-o-watt and the highest wattage I saw was 160 watts.

I bought a small, manual coffee grinder to see if it would grind flax seeds and it doesn't.

The electric grinder only takes about 5 seconds to grind the flax seeds. If I get a 200 watt inverter (cigarette lighter style), would my best bet be to run it on the tow cigarette lighter or would I be OK on a 20 amp circuit in the trailer? If my math is right, I think it would draw about 14 amps on a 12v circuit.

This is something I would do once or twice a week.
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Old 08-28-2014, 09:09 AM   #2
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I don't think I have ever seen a 200 watt plug-in inverter. Sometimes the MFG includes a plug in cord with, say, a 400 watt inverter, but warns that it's use reduces the maximum ac current available. As that type connection is usually rated at 10 amps, that would leave you at 120 watts max. If you have a 20 amp fuse on your power outlet in your trailer it is overfused and could lead to overheating the outlet.

If you try to force the issue, most inverters will shut down very quickly.

Best bet, an inexpensive 200/400 watt inverter, hard wired to the coach battery via a 20 or 30 amp circuit breaker.
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Old 08-28-2014, 09:20 AM   #3
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I want to grind flax seeds. At home I use a small, electric coffee grinder. It is 120v/200 watts. I just plugged it into my kill-o-watt and the highest wattage I saw was 160 watts.

I bought a small, manual coffee grinder to see if it would grind flax seeds and it doesn't.

The electric grinder only takes about 5 seconds to grind the flax seeds. If I get a 200 watt inverter (cigarette lighter style), would my best bet be to run it on the tow cigarette lighter or would I be OK on a 20 amp circuit in the trailer? If my math is right, I think it would draw about 14 amps on a 12v circuit.

This is something I would do once or twice a week.
I'd do it on a 20A in the trailer. Many tows have 10 or 15A fuses for the lighter plug sockets.
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Old 08-28-2014, 11:59 AM   #4
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The plug-in 12 volt plug contains a fuse. If the amperage draw is too high it should pop the fuse. I've had 12 volt plugs melt from being over-fused. Check if the plug-in inverter has an amperage rating.
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Old 08-28-2014, 12:23 PM   #5
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Amazon.com: Heavy Duty 20 Amp 12 V Motorcycle Plug Cigarette Lighter Socket Power Outlet #Ctd: Everything Else

20 amp Cigarette lighter sockets and plugs ARE available. Possible that the trailer one is NOT overfused. Likely? That's another story.
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Old 08-28-2014, 12:46 PM   #6
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Amazon.com: Heavy Duty 20 Amp 12 V Motorcycle Plug Cigarette Lighter Socket Power Outlet #Ctd: Everything Else

20 amp Cigarette lighter sockets and plugs ARE available. Possible that the trailer one is NOT overfused. Likely? That's another story.
Specs on the one installed.

Specification:

Output current: 20 (A)
input voltage: 12 (V)
Output voltage: 12 (V)
Output power: 240 (W)
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Old 08-28-2014, 01:16 PM   #7
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That's nice, now find a matching plug that's rated for 20 amps.....
The one shown in the link is the socket only.
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Old 08-28-2014, 08:34 PM   #8
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That's nice, now find a matching plug that's rated for 20 amps.....
The one shown in the link is the socket only.

Cigarette Lighter Plug 20 Amp Fuse & Lamp

Minute Man Electronics Cigarette Ligher Plugs and Sockets

Not hard to do.
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Old 08-28-2014, 09:11 PM   #9
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That's nice, now find a matching plug that's rated for 20 amps.....
The one shown in the link is the socket only.
What do I need a plug for? I plan on buying a 200 watt inverter that has a plug built in.
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Old 08-28-2014, 09:18 PM   #10
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Let us know if you find one. I searched and couldn't find such an animal. Maybe they are concerned with most outlets being fused at 10 amps and/or hanging that much weight on a plug & outlet.

I did find one that came with a short cord and plug, but it was noted that the plug was fuse limited to 10 amps.
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Old 08-28-2014, 10:13 PM   #11
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You could always use a mortar and pestle to grind the flax seeds.
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Old 08-29-2014, 06:54 AM   #12
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Let us know if you find one. I searched and couldn't find such an animal. Maybe they are concerned with most outlets being fused at 10 amps and/or hanging that much weight on a plug & outlet.

I did find one that came with a short cord and plug, but it was noted that the plug was fuse limited to 10 amps.
This is the 1st one that showed up on Amazon. Looks like it should work. It does have separate plug.

http://www.amazon.com/inverter-adapt...ct_top?ie=UTF8
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Old 08-29-2014, 08:34 AM   #13
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Looks like a similar version is only $22, let us know how it works for you:
http://www.amazon.com/inverter-adapt...cm_cr_dpwidget
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Old 08-29-2014, 08:51 AM   #14
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Grinds batch before you leave,store in an airtight container and keep frozen or cold as possible.
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