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Old 03-23-2019, 06:56 PM   #1
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Inverter Chassis Grounding Wire Question

I'm installing a 1000W PSW inverter in my trailer's front pass thru storage. No permanent mount of the inverter. I will hook it up and remove it during each boon dock trip.

What size AWG green insulated wire should be used to connect from a 1000W inverter's rear panel to the chassis? The wire run is about 4 feet.

All my instruction manual says is "In any installation, heavy duty green-insulated wire should be used for this connection." I did research this but could not find anything.

Camp4two
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Old 03-23-2019, 07:03 PM   #2
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Originally Posted by Camp4two View Post
I'm installing a 1000W PSW inverter in my trailer's front pass thru storage. No permanent mount of the inverter. I will hook it up and remove it during each boon dock trip.

What size AWG green insulated wire should be used to connect from a 1000W inverter's rear panel to the chassis? The wire run is about 4 feet.

All my instruction manual says is "In any installation, heavy duty green-insulated wire should be used for this connection." I did research this but could not find anything.

Camp4two
Why would you install and remove very time? What are you hooking the 120 side to? How long are the runs to your battery? what size wire are you running the then batt? #12 GA ground wire should do but there should be more info on this.
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Old 03-23-2019, 07:35 PM   #3
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I would go with 8-ga, minimum 10-ga.
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Old 03-23-2019, 07:35 PM   #4
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Originally Posted by cavie View Post
Why would you install and remove very time? What are you hooking the 120 side to? How long are the runs to your battery? what size wire are you running the then batt? #12 GA ground wire should do but there should be more info on this.
Why would you install and remove very time? We dry camp 3-4 times/yr., 1-2 weeks each camp. Very easy to hook up and remove (did this before on a small 600W inverter). Prefer to store it at home when not used.

What are you hooking the 120 side to? #10 GA extension cord run back to our 30A trailer's supply cord using a 30A-20A adapter to connect to the extension cord.

How long are the runs to your battery? About 5 feet.

what size wire are you running the then batt? 4 AWG welding cable. 100A breaker.
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Old 03-23-2019, 07:42 PM   #5
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Why would you install and remove very time? We dry camp 3-4 times/yr., 1-2 weeks each camp. Very easy to hook up and remove (did this before on a small 600W inverter). Prefer to store it at home when not used.

What are you hooking the 120 side to? #10 GA extension cord run back to our 30A trailer's supply cord using a 30A-20A adapter to connect to the extension cord.

How long are the runs to your battery? About 5 feet.

what size wire are you running the then batt? 4 AWG welding cable. 100A breaker.
Got it.
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Old 03-23-2019, 08:15 PM   #6
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Originally Posted by boondocking View Post
I would go with 8-ga, minimum 10-ga.
Yup, for a run that short that should be fine.
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Old 03-23-2019, 10:37 PM   #7
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Quote:
Originally Posted by Camp4two View Post
I'm installing a 1000W PSW inverter in my trailer's front pass thru storage. No permanent mount of the inverter. I will hook it up and remove it during each boon dock trip.

What size AWG green insulated wire should be used to connect from a 1000W inverter's rear panel to the chassis? The wire run is about 4 feet.

All my instruction manual says is "In any installation, heavy duty green-insulated wire should be used for this connection." I did research this but could not find anything.

Camp4two
1000 watts and four feet comes to 4 AWG. For that large a load go straight to the battery for both the cable runs. Also run a third ground 10 AWG green wire to chassis ground.
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If you are going to disconnect use something like: Red 2-4 Gauge Battery Quick Connect/Disconnect Wire Harness Plug:
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Old 03-24-2019, 11:11 AM   #8
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Inverter Chassis Grounding Wire Question

Thanks everyone for your help. I decided to go with #10 AWG green wire from my 1000W inverter to chassis ground (a 4 ft. run).
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Old 04-22-2019, 11:42 PM   #9
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When boondocking the only thing the ground wire connected to the trailer chassis does is reduce possible RF interference with radio reception. That is unless you drive a ground rod in the dirt at every campsite and run a jumper cable to the chassis.

For the ground you only need a piece of #12 wire. The BIG wires are only required for the pos/negative connections to the battery.
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Old 04-23-2019, 12:36 PM   #10
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When boondocking the only thing the ground wire connected to the trailer chassis does is reduce possible RF interference with radio reception. That is unless you drive a ground rod in the dirt at every campsite and run a jumper cable to the chassis.

For the ground you only need a piece of #12 wire. The BIG wires are only required for the pos/negative connections to the battery.
Grounded chassis has nothing to do with radio reception. It is for safety to prevent a hot skin short.
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