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Old 12-26-2015, 04:42 PM   #21
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Running (2) heater's from (1) Ex cord plugged into a (Power Bar) running across a Rockwood slide that is Covered with Carpet sounds like a (FIRE) Trap!! A Cord and Power Bar that would be Heavy enough to power (2) Heaters would be Large and Heavy! Youroo!!
Heaters at opposite ends of trailer, one on power bar, one on RV outlet. Power bar gives peace of mind because of 1875W capacity & 15A breaker.
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Old 12-26-2015, 07:16 PM   #22
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To the OP, at the very least, you need a proper gauge extension cord. If you intend to do it regularly, I suggest installing one of these on the side of your trailer.

Use at least 14 ga. wiring to connect it to a single, dedicated receptacle.

It would be even better if you had an inline fuse or breaker so you don't have to rely on the breaker on the power post.

You can get a 15A surge protector power bar but they are a bit pricey.

And most importantly, before you follow my suggestion or that from anyone on the Internet, get an opinion from an electrician.
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Old 12-26-2015, 07:43 PM   #23
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Old 12-26-2015, 07:53 PM   #24
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Some good advice in prior posts. Some are a little unsure themselves. "Most" extension cords are 16 gauge which is only good for 10 amps. A 1500 watt elect heater will draw 12-15 amps. 14 gauge wire is good for 15 amps which is "just barely" adequate. 12 gauge is good for 20 amps which is the correct wire size for the application.
But here's the thing; even a 12 gauge ext cord can cause a real problem if there is any resistance at the plug/socket connections. A small amount of resistance in any (or all) of the connections will introduce voltage drop into the circuit. Voltage drop with a heavy load "like a heater" will create a hot spot in the circuit. This situation might lead to a fire. THIS is why heater manufacturers are adamant about not using ext cords. This is simple ohms law and is a topic I'm very comfortable with. And yes, I have been known to use ext cords with elect heaters, but here is what I do; 1. Choose correct wire size for application, 2. Examine the plugs/sockets carefully for any signs of damage, ( discard or repair if needed). 3. Use some Emory paper or 'fine grit' sandpaper and shine the plug blades, (don't overdo this or you can remove the brass plating which just exacerbates the problem you're trying to fix) 4. Apply a small amount of silicone grease to the blades, 5. Never plug it in and walk off....always monitor these connections for any sign of heat. 6. Never go to sleep with the heater running on ext cords....warm the camper up, then unplug it before going to sleep. Those are things that come to mind. If I think of anything else, I'll make another post.

Good luck
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Old 12-26-2015, 07:54 PM   #25
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I added an inlet and outlet to our trailer for the purpose of an electric heater or counter top convection oven and not having to worry about what is running on the 30 amp mains. I used 12 ga wire internally and for the purchased exterior extension chord.





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Old 12-27-2015, 12:17 PM   #26
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I added a second 30 amp circuit.





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Old 12-27-2015, 12:29 PM   #27
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Turbs....plug is upside down.......just say'n
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Old 12-27-2015, 12:40 PM   #28
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How can I run an extension cord in without ruining something?

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Turbs....plug is upside down.......just say'n

Only in oc's lonely world..........


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Old 12-31-2015, 11:54 AM   #29
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Turbs, that's an excellent and professional looking install. Perfect for a high load device such as a heater or toaster or coffee maker. I may steal a couple of your ideas there.
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Old 12-31-2015, 11:57 AM   #30
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Turbs, that's an excellent and professional looking install. Perfect for a high load device such as a heater or toaster or coffee maker. I may steal a couple of your ideas there.
No problem!
Post pics!
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