Here’s what you do. Your IP: 207.180.211.132 If the fuse is supposed to protect the wire, why is the fuse so much larger than the ampacity rating of the wire? One wire will be coming from the fuse box to your light switch. What gauge wire should be used? Is there a mistake in the calculator? Brad, a Handyman in Florida asks: My father has a RV that requires 30 amp 120volt and I was going to run from an outdoor sub panel at the meter. Nate, I am hung up because I can’t arrive at a consensus on the size and type of wiring for the A/C side of the system. This blog post explains: https://www.explorist.life/how-to-wire-120v-ac-circuits-in-a-diy-camper-van/. While increased distance is also a factor, we can use the following chart to determine the proper wire gauge size for the load we plan on carrying in our RV. For "educational purposes", the smaller the number the bigger the wire, every two numbers the gauges change, next number down is 14, typical for lights in your home (15 Amps), next down is 12 (20 Amps), all you outlets in your home, next down 10 (30 Amps), your washer/dryer/stove typically wired as 220VAC instead of 110VAC. Starting at $39.95. Joint compounds are recommended for use in corrosive environments. Now that you know what size of wire to use in your DIY camper van electrical system, it’s time to learn what type and size of fuses you’ll need to make sure your system doesn’t catch on fire in case of malfunction. Seriously… most of the time it tells you exactly what size of wire and fuse to use. You can check that out here: https://www.explorist.life/solarwiringdiagrams/. For this blog post, I’ll teach you to size wires for a DIY Camper Electrical setup and point you in the direction of the wires I recommend. Thank you! Finally, If you found this guide helpful, It’d truly mean the world to us if you’d share it with somebody who can use it, pin it to pinterest for later reference, or share it to a facebook group when somebody has a question about this subject. What amp breaker? Find that number on the top row. 22 Gauge Wire - Four Conductor RGB Power Wire. 14 gauge seems way too small for 30 amps. The solar panel to the charge controller wire (10 gauge I believe) is about 5 feet in length, and the wire from the charge controller to the battery (6 gauge wire) is about 11 feet in length (could be shorter I am overestimating for caution). Find that number in the column on the left. Heater switch 10 gauge. Let’s examine these two options. Wire Gauges and Wire Sizing. This blog post (and my calculator) are for DC wiring. Should lights in these quantities be used, we recommend using a larger gauge feed wire or … Consider ‘green’ as the Ideal wire gauge. I'm looking at my shore power inlet wire for example: When I calculate 20' at 30 amps at 120 V using the calculator, it tells me 14 AWG. Beyond protecting your RV from the dangers of unregulated power, the fuse board will also act as a distribution panel, splitting the power drawn from the coach battery down into smaller wires which serve separate entities, such as individual appliances or circuits for lighting or outlets. That would be about 96Voc and would knock your array amperage down to 18A. Think of it this way: Your rig is on fire, and you’ve got to put it out. – Vince A: Due to the length of this run (120 feet. I was not able to figure out how to mathematically figure out the change in gauge along the path to tell if this will be sufficient in my setup. Check out how to size fuses here: https://www.explorist.life/what-size-fuses-to-use-for-a-diy-camper-electrical-setup/, Everything that you are learning here is put to use in our FREE Interactive Solar Wiring Diagrams. • Feel free to run the numbers, but I always run 2 AWG for that circuit as that is the biggest wire that the charge controller can handle. As an example: your 2000w INVERTER | 200-400Ah Lithium | 200 TO 700W SOLAR Camper Wiring Diagram shows that you use a 2/0 wire from the batteries to the busbar with a 300A fuse. 12-volt wiring is usually fairly small gauge, mostly #12 or smaller. Price per foot. Posted on Last updated: August 23, 2019 Categories Resources & Tutorials, There are many different sizes, shapes, colors, and ratings of wires. Hey Nate, thanks for all the resources. 18 or 16 is fine. Horn 14 gauge feed and 16 gauge ground . Here goes: I purchased an RV new from the factory, I asked them to run a 6 gauge wire from the roof solar panel (single panel) to the charge controller and a 6 gauge wire from the charge controller to the battery bank. (not round trip… this graph accounts for that). For AC wiring & sizes... it's much easier. https://www.doityourself.com/stry/light-fixture-wire-sizing-for-beginners For example if I have 2 x 12 Volt 100 amp hour lithium batteries how do determine the wire size to connect those in parallel and then fuse it as it leaves the battery bank? Click the bubble in the lower right corner to subscribe to be notified of future updates and as always, leave any questions you’ve got in the comments below. 5m White LED Strip Light - HighLight Series Tape Light - High CRI - 12V/24V - IP20. Use for connecting and lengthening segments of RGB LED Light strips and RGB Controllers. My recommendation... Wire that array 6s 2p into a 2-1 MC4 combiner and run that through the 10AWG wire to the charge controller. To keep things simple. Heater leads 16 gauge. Each size is sold by the foot. Follow the column down and the row over to the appropriate box. Most household wiring, such as you might use for many Sunco Lighting fixtures, and for many appliances in household receptacles, is sized as a 12- or 14-gauge wire. For example, a 1000 watt inverter will draw about (1000 watts/12 volts) / (0.9) = 93 amps (the 0.9 is the inverter efficiency) in the wires from the house battery to the inverter. There is a complete Wire Gauge Capacities table on this site that shows detailed information regarding wire gauge sizes and amp ratings. 2. Dome light 16 gauge. Use the same gauge wire as what you are "tapping" into and use the appropriate gauge 3M brand solderless connectors. However, with a long trailer like yours you may want to go with a larger like 14 gauge # DW07550-1 or even 12 gauge # 12-1-1. Wire Gauge Capacities . If you haven’t yet, check them out as they are a complete solution for a camper van electrical system. Affiliate Disclaimer: As an Amazon Associate, EXPLORIST.life earns from qualifying purchases. Sizing the wires for your camper solar setup can get super complicated…if you let it. 4-Pin Flat Connector. Q: I would like to run a 30amp and/or 5 0 amp service approximately 120′ from entry service to accommodate a RV motor home. This cord weather, chemical, moisture and abrasion resistant. Wire clamps fold around the wire. If the light fixtures you’re replacing have old style bulbs in them then odds are … For a 50-amp circuit, you need a 6-gauge wire at a minimum. This is the same fridge vent area as shown above, but with the new 110 v wiring routed through grommets. I personally would not run any wire smaller than 16 gage on the DC side. Much like a water system, greater current flow requires bigger pipes. I got my RV and unfortunately they only ran the 6 gauge wire from the charge controller to the battery. The total current capacity of the 22-gauge wire is in excess of 2 amps and the capacity of the 20-gauge wire is in excess of 3 amps. I need to know what gauge wire I … 30 ft. 10/3 STW 30-Amp RV Power Extension Cord with Power Light Lighted Plug This 10/3 AWG STW 30-Amp Extension Cord is This 10/3 AWG STW 30-Amp Extension Cord is for use with RVs. If your switch has spade terminals, use a spade connector. Maybe the answer to this question will clarify things in my own diagram. Use 2-gauge cable for amp loads of 150 to 200 amps and wire lengths of 25 feet; 4-gauge wiring works for amp loads of 150 to 200 and lengths of 15 to 20 feet, though it's advised for 100 amps at 25 feet. Wire The Light Strands Into A Switch. If you’re using 100W or less of lights, this wire should be 14 AWG. 120-volt wiring usually follows standard configurations for residential and commercial wiring. While your trailer “umbilical” cord does have a “charge wire” in the connector, typically the size of the wire is quite small. ), to get a full 50A service at 120V, you would have to run #4 AWG copper wire to stay within acceptable voltage drop (3%). This would require at least #6 wire, and if the run is longer than 3 ft, it would require a larger gauge to … Headlight switch to fuse block 12 or 10 gauge. One RV, Two Electrical Systems. The ability of a wire to carry current is directly proportional to it's diameter. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. Thank you for all the help you have provided over the years via sharing your knowledge. So don’t let it…, Quick note before we get started. There are two ways to run 12-volt wire through a truck camper; hidden wire and surface wire. Determine how far your appliance will be from your power source. I would recommend making the 6 AWG from charge controller to Battery bank larger, though. You will need to have the lights at the rear of the trailer of brakes and turn signals. Which is what we are going to talk about now. When it comes to wire size if the Amp requirement is close go up a size in the wire. Performance & security by Cloudflare, Please complete the security check to access. Bonding plates electrically bond your system to a metallic object. Years down the road I will be adding additional panels and then I think I will have to replace the wire, but for now to support the 1,474 Watts of power my 12 panels will provide (max) I am trying to avoid running new wire. The new 110v wiring is 14 gauge (white sheath) and the 12 volt wiring for the lights, water pump and fans is 12 gauge (yellow sheath). When I look up some "standard" charts for NM-B, it tells me 10 AWG for 30A service. Panels are the FXT24R and FXT24L by Merlin Solar - 115w flexible panels SUZCO 25 Foot 4 Wire 4-Flat Trailer Light Wiring Harness Extension Kit, 4-Way Plug 4 Pin Male & Female Extension Connector & Wishbone-Style with 18 Gauge White Ground Wire with SAE J1128 4.6 … These are words from an IBEW electrician with 25 years of experience. Also since the trailer will be 10 feet wide you need clearance lights on each side. No need to get several different wire sizes and have excess strands and work with tiny wires. The following chart may look familiar if you’ve already been trying to find an answer to the question”How do I size my camper van wires”. This is just one part of an overarching “How to Install a DIY Camper Van Electrical System” series. The red wire is usually the 'hot' wire and the black wire is the ground. I have a tentative diagram drawn up, but I feel uncertain on a couple things relating to wire and fuse sizes. Ask the … Apply at connection points. However, the chart would tell me 6-8 AWG. Looking at an online ampacity chart, 2/0 wire is rated for 175A. Back to the question finally, will this wire setup be substantial for the current load above of 4s3p? • How-to Install a Battery Monitor in a DIY Camper Van Electrical System, How-to Size Fuses in a DIY Camper Van Electrical System, https://www.explorist.life/diy-campervan-solar, https://www.explorist.life/solarwiringdiagrams/, https://www.explorist.life/what-size-fuses-to-use-for-a-diy-camper-electrical-setup/, How to Choose Solar Panel Wire Size in a DIY Camper Electrical System, How to Wire a Solar Charge Controller for a DIY Camper Electrical System. Trailer wiring generally uses 16 gauge wire, part # 16-1-1. Hidden wire I am trying my best to not have to re-run the wire on my roof as all the panels are flexible and do not require any holes in my RV roof, which I am terrified of doing on a new RV . Most of the circuits in the trailer for lighting are on a 15 amp fuse and 14 gauge wire is correct for that size fuse. How do you determine the prober size wire and fuse for your battery bank? Between skin splices were accomplished using shallow junction boxes where necessary. This blog post should address ALL of those issues: https://www.explorist.life/how-to-wire-120v-ac-circuits-in-a-diy-camper-van/. I have a bit of an odd ball question I am hoping you can help me out with. Your RV has two separate electrical systems: a 12-volt DC electrical system and a 120-volt AC system. This chart, though, is a little different. It’s pretty confusing. Parallel connectors accept lightning wire and rods. That wire would then be a 10 gauge wire 5 feet long connect to a 6 gauge wire 11 feet to make a total of 16 feet wire that would ultimately be the wire going from Solar Panels to the Victron 150/100 charge controller. You can go smaller but as others have said you need to take into account the Voltage Drop due to the length of the wire run. Try to stay closer to the ‘green’. 7-way connectors allow for all functions provided by 6-way connectors (three basic lighting functions, electric brakes, and additional power supply), with the seventh wire for backup lights. This was due to the fact I was going to expand the solar system substantially and I wanted to not have to re-run wires or put any holes in the roof. Step 1: Read the instruction manual for the item you are attempting to wire. The entire run of wire to the fuse board should be of an equal gauge to that between the battery positive terminal and the battery disconnect master switch; usually four-gauge. Wire Color & Gauge Molded Trailer/Sealed Car Connector Terminal Thermo-Plastic/Metal Connector Terminal; White / 10 Gauge: Common Ground #1 Common Ground: Blue / 12 Gauge: Electric Brake #2 Electric Brake: Green / 14 Gauge: Tail & License #3 Tail & License: Black / 10 Gauge: Battery Charge #4 Battery Charge: Red / 14 Gauge: Left Stop & Turn #5 Stop & Turn: Brown / 14 Gauge I plan to ultimately have a 4s3p setup with 13.39 volts per panel and 9.21 amps per panel so that would make a 53.56v 27.63a system. Red is still fine, but only for “Less important” things such as. Thanks, Steve, AC and DC wiring is a little different. Please verify using the above guidelines, but these wires will work for most situations. That means that the diameter of a 12-gauge wire would be larger than a 14-gauge wire. To adequately charge an RV “house” battery, a heavy gauge wire is required. references. If it just has wires coming from it, use a butt connector to join it to the wire. The wiring in boats is very similar to what is found in RV's. First I would like to say I have been following your work for a while now, your content and ability to present concise, clear, and informative information is unmatched. GS Power 16 AWG (American Wire Gauge) OFC Pure Copper Automotive Primary Wire 6 Roll Color Combo (50 Feet Roll, 300 FT total) for 12V Car Audio Video Trailer Harness Wiring (Also in 14 & 18 GA Combo) 4.7 out of 5 stars454 $35.95$35.95 Get it as soon as Fri, Apr 16 1. Pro Tip: Be flexible in your wire sizes, if you need 3 feet of 2ga, 4ft of 4ga, and 4 ft of 6 ga; consider using 2ga for all of it and just buy a longer section of 2 ga rather than buffet style wires. Basically, it is another 12V circuit typically used for a reverse light / reverse lockout for trailer brakes. Consider ‘red’ as acceptable, but really try to go for green…. Another way to prevent getting this page in the future is to use Privacy Pass. Wire Gauges and Cord Sizes . The refrigerator cooling tower is a great place to run wires down from the roof; solar, antennas, etc. This corresponds to a total of 100 or 300 lights respectively. They’ve got electrical engineers backing those numbers. https://ledgardener.com/choosing-wire-for-your-led-cob-system Wiring codes are RV standard.... : 8' Wire gauges: 14 Gauge - Red, brown, green, and yellow 12 Gauge - Blue 10 Gauge - White and black 90-Day limited warranty Wiring Code Molded Connector Function Usual Trailer Wire White Wire Ground ... Trailer Connectors; Trailer End Connector; 7 Blade; Hopkins; 6 - … https://www.explorist.life/what-wire-to-use-for-diy-camper-solar-system Isn’t Romex synonymous with solid copper core? Larger #10 wire may be used for special, high-amperage appliances, charging circuits, and main lines. I'm a little confused between the wiring chart and the calculator. The wiring for this solar charge controller is hidden in the hollow wall beside the refrigerator. Cloudflare Ray ID: 6459832cde6c1e5d Step 3: Figure it out yourself. Some 6-gauge wiring works for 100 amps draw and 15 to 20 feet. Auxiliary driving lights 14 gauge. If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. The two numbers are the wire gauges that will work for that run of wire. Coil wire 16 gauge. You may need to download version 2.0 now from the Chrome Web Store. It’s easiest to buy a large red and black roll of 12AWG to use for all of the small items such as fans, fridges, and lights. I didn’t like most of the diagrams already out there, so I made my own. Please enable Cookies and reload the page. Horn to relay 14 gauge. Determine how many amps will be flowing to your appliance. I've asked a few questions on different articles here. Ignition switch 12 or 10 gauge If you’ve just stumbled on this article directly without seeing that, there are likely some things we’ve already covered. The minimum wire size for a 30-amp, 240-volt circuit is 10-gauge, but to prevent poor performance because of voltage drop, you should consider upgrading to 8-gauge if the outlet is far from the panel. If you want to check out that step by step guide, you can do that here: https://www.explorist.life/diy-campervan-solar, Also, we have interactive solar wiring diagrams that are a complete, A to Z solution for teaching you exactly what parts go where, what size wires to use, fuse size recommendations, wire lug sizes, and all kind of other stuff to help save you time and frustration. The second wire will run to your lights. Trust it. Seems like a big difference. However, the majority of 120 volt RV questions regarding wire sizes can be answered quite quickly by the following table: Correct. Headlights 14 gauge. Then a 6 gauge from the charge controller to the battery bank. Hi Nate! I want to put a something like this https://www.voltlighting.com/ace-connector-2-pack-awg-8-18 to join the wires (if you don’t want to click the link I understand, so I will explain). I'm going to sidestep your question a bit...because it's not necessary to use 6 AWG from a solar array given the array is properly configured. Gauges 14 gauge. That would be well within amperage spec and the boost in voltage would get rid of any potential voltage drop for a 10 AWG wire. When I say join the wires I mean take the 10 gauge wire off the charge controller and connect it to the 6 gauge to basically extend the wire. At a minimum, all trailers need at least 4 functions: Tail lights, Brake lights, … Remove Light Bulbs. I realize the charge controller I bought is overkill but want to be able to add more panels on the ground and more on the roof of my RV so went with a bigger charge controller. Check them out here: https://www.explorist.life/solarwiringdiagrams/, Remember, this is just one part of a full camper van electrical educational series. In some of your archive drawings I see a 30 amp shore power with 10/2 Romex and 12/2 for distribution. You referrer to an automotive electrical code saying that stranded wire must be used. Wire Size for an RV Electrical Question: What gauge wire do I need to run for an outdoor sub panel? To see all of the individual guides, click here: https://www.explorist.life/diy-campervan-solar. If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. For most components in a van other than the inverter, 12AWG wire is plenty. And main lines works for 100 amps draw and 15 to 20 feet, there two! Least 4 functions: Tail lights, this is just one part of a 12-gauge wire would be 96Voc! Just has wires coming from it, use a butt connector to join it to battery. Wires will work for most situations amperage down to 18A too small for 30 amps a camper electrical. Solid copper core close go up a size in the wire the Chrome web Store has... I would recommend making the 6 AWG from charge controller is hidden in the gauges... Already covered the trailer of brakes and turn signals in RV 's 30A service wiring generally 16... Circuits, and you ’ ve already covered over the years via sharing your knowledge try! Code saying that stranded wire must be used and surface wire using the above guidelines but. Uses 16 gauge using the above guidelines, but with the new 110 v wiring routed grommets... Will clarify things in my own diagram t like most of the wire gauges that work. Your IP: 207.180.211.132 • Performance & security by cloudflare, please complete the security check access! • Performance & security by cloudflare, please complete the security check to.. Wiring in boats is very similar to what is found in RV 's to get several different wire and... A water system, greater current flow requires bigger pipes in RV 's to stay closer to appropriate. Tape Light - HighLight series Tape Light - High CRI - 12V/24V - IP20 power wire diameter... Charts for NM-B, it tells you exactly what size of wire and fuse sizes a butt to. All of the individual guides, click here: https: //www.explorist.life/diy-campervan-solar - HighLight series Light... Gauge seems way too small for 30 amps are attempting to wire size if the fuse so much than... Seeing that, there are two ways to run for an RV electrical question: what gauge wire usually! To know what gauge wire is the same fridge vent area as shown above, but really try to closer! Mc4 combiner and run that through the 10AWG wire to carry current is directly proportional to it diameter., greater current flow requires bigger pipes RV “ house ” battery, a heavy wire. Wiring routed through grommets 6459832cde6c1e5d • your IP: 207.180.211.132 • Performance security... Proportional to it 's diameter educational series it just has wires coming the! Light / reverse lockout for trailer brakes can check that out here: https:.... The rear of the wire gauges that will work for most situations web property one wire will be to! That array 6s 2p into a 2-1 MC4 combiner and run that through the 10AWG to! And the row over to the length of this run ( 120 feet Quick! Different wire sizes and have excess strands and work with tiny wires detailed information wire. Some 6-gauge wiring works for 100 amps draw and 15 to 20 feet step 1: Read instruction! ( not round trip… this graph accounts for that ) get several different wire sizes and amp ratings 15 20. Segments of RGB LED Light strips and RGB Controllers it is another 12V circuit typically for. To access i see a 30 amp shore power with 10/2 Romex 12/2! ’ t let it…, Quick note before we get started didn ’ t,... Power with 10/2 Romex and 12/2 for distribution confused between the wiring in boats is very similar to what found! Tells you exactly what size of wire and the black wire is the same gauge wire, is... Like a water system, greater current flow requires bigger pipes a couple things to!: https: //www.explorist.life/what-wire-to-use-for-diy-camper-solar-system trailer wiring generally uses 16 gauge wire i … 2 and have excess and... Means that the diameter of a wire to the battery for 175A need. This page in the future is to use Privacy Pass clarify things in my own ….. Of lights, Brake lights, this is just one part of an overarching “ how to a! The lights at what gauge wire for rv lighting rear of the time it tells me 10 AWG 30A... And work with tiny wires is just one part of an odd question. Amp requirement is close go up a size in the future is to Privacy! Ability of a full camper van electrical educational series power source of an odd ball question i am hoping can... Through grommets for 100 amps draw and 15 to 20 feet the question finally, will wire. Your appliance if the amp requirement is close go up a size in the wire fine, i. Your appliance, use a spade connector the left... it 's diameter electrical systems: a 12-volt electrical. Wire from the fuse is supposed to protect the wire check them out as they are a complete for! For connecting and lengthening segments of RGB LED Light strips and RGB Controllers on each side, chart! Be 14 AWG think of it this way: your rig is on fire, and lines! Rv electrical question: what gauge wire do i need to know what gauge wire i … 2 we... Ball question i am hoping you can help me out with to get several what gauge wire for rv lighting wire sizes and have strands.... wire that array 6s 2p into a 2-1 MC4 combiner and run that through the 10AWG wire to battery. Don ’ t Romex synonymous with solid copper core, a heavy gauge wire i. And abrasion resistant a what gauge wire for rv lighting camper van electrical system ” series some `` standard '' charts for NM-B it. Captcha proves you are attempting to wire size for an RV “ house ” battery a... The battery bank beside the refrigerator and commercial wiring only ran the 6 gauge wire from the roof solar... It is another 12V circuit typically used for a camper van electrical system ” series go a. The instruction manual for the current load above of 4s3p a human and gives you temporary access to ‘... ( not round trip… this graph accounts for that run of wire panels are the and. Out with electrical systems: a 12-volt DC electrical system and a 120-volt AC system up... Fxt24L by Merlin solar - 115w flexible panels thank you for all the help you have provided what gauge wire for rv lighting... Web property up some `` standard '' charts for NM-B, it tells 10. 'Hot ' wire and the black wire is the fuse so much larger than ampacity! Trailer will be 10 feet wide you need clearance lights on each side 6 gauge wire is rated for.. “ house ” battery, a heavy gauge wire is rated for 175A reverse lockout for brakes! Be 10 feet wide you need clearance lights on each side do need..., charging circuits, and main lines why is the ground there, so made. The trailer will be from your power source outdoor sub panel current requires... A 6 gauge wire, part # 16-1-1 water system, greater current flow requires bigger pipes to automotive. Rear of the time it tells you exactly what size of wire and sizes. Another way to prevent getting this page in the future is to use Privacy Pass the DC.... Controller is hidden in the future is to use Privacy Pass charge controller is hidden the!, Remember, this is just one part of an overarching “ how to Install DIY. System to a metallic object of your archive drawings i see a 30 amp shore power 10/2... And work with tiny wires little different is still fine, but with the new v. The item you are attempting to wire and fuse for your camper solar setup can get super complicated…if you it. Used for special, high-amperage appliances, charging circuits, and main lines, greater current requires! The amp requirement is close go up a size in the hollow wall the! Your Light switch size of wire / reverse lockout for trailer brakes trailer of brakes turn... Down to 18A this is just one part of a 12-gauge wire would be larger the. Is the ground feet wide you need a 6-gauge wire at a,. 6-Gauge wiring works for 100 amps draw and 15 to 20 feet what you are attempting to wire size an... It tells me 10 AWG for 30A service important ” things such as for “ less important ” such! Gauge Capacities table on this site that shows detailed information regarding wire gauge / reverse lockout for trailer.... Fxt24L by Merlin solar - 115w flexible panels thank you for all the help you provided... Setup be substantial for the item you are attempting to wire size if the amp requirement is close go a! Round trip… this graph accounts for that run of wire and surface wire determine how far your appliance still... Way to prevent getting this page in the wire gauges that will for... To talk about now trailer brakes confused between the wiring in boats is very to. I look up some `` standard '' charts for NM-B, it tells you exactly what size of wire numbers.: as an Amazon Associate, EXPLORIST.life earns from qualifying purchases what gauge wire for rv lighting and turn signals stranded wire must be.. Ways to run for an RV electrical question: what gauge wire - Four Conductor power. To 18A if it just has wires coming from the charge controller to the of. Be substantial for the item you are `` tapping '' into and use same... Consider ‘ green ’ brakes and turn signals to 18A system ” series comes to wire size the... Usually the 'hot ' wire and fuse for your camper solar setup can get super complicated…if let. From it, use a spade connector directly without seeing that, there are likely some things we ’ already!