Very nice engineering field for polytechnic student read about electrical engineering& technology. Allowable voltage drop is based on whether a circuit is critical or non-critical.Critical circuits, with 3% allowable voltage drop, include :• Panel main feeders• Bilge blowers• Electronics• Navigation lightsNon-critical circuits, with 10% allowable voltage drop, include:• General lighting• Windlasses• Bait pumps• General appliancesFollow down the column until you find your circuit’s LENGTH IN FEET.▲Intersect CURRENT IN AMPS with LENGTH IN FEET to identify the wire size.Example: A windlass rated 80A is 25’ from the battery.
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Thanks. Pulling too much amperage through a wire always leads to that wire getting hot, and eventually it catches fire. You are posting as a Guest without being logged in.

The most common cause of automotive fires is electrical shorts. Breaker cannot be larger than ampacity of wire except for some loads like more loads. I’m interested in your company ordering some circuit breakers for a electrical project am working on for my client. Call . Here is a link to one. https://www.sma.de/en/products/battery-inverters/sunny-island-44m-60h-80h.html, https://www.cerrowire.com/products/resources/tables-calculators/ampacity-charts/, https://lugsdirect.com/WireCurrentAmpacitiesNEC-Table-301-16.htm, http://www.boatus.com/boattech/articles/electrical-wiring-on-boats.asp, http://files.sma.de/dl/17632/SI30M-44M-60H-80H-IA-en-33W.pdf, https://www.calculator.net/voltage-drop-calculator.html, https://www.calculator.net/voltage-drop-calculator.html?material=copper&wiresize=0.4066&voltage=58&phase=dc&noofconductor=1&distance=4&distanceunit=meters&eres=110&x=60&y=7, http://files.sma.de/dl/31716/STP30-60-DEN1834-V13web.pdf, Rated Watts * 1/0.85 typical inverter eff * 1/battery cutoff voltage * 1.25 NEC derating for wiring/fuses/breakers = branch circuit rated current, 1,200 Watts * 1/0.85 inverter eff * 1/10.5 battery cutoff * 1.25 NEC derating = 168 Amp circuit (1,200 Watt, 10.5 volt cutoff, wire+breaker rating), 12 volt battery bank > ~1,200 Watt typical maximum AC inverter rating (you can push to ~1,800 Watts if you are careful), 24 volt battery bank > ~2,400 to 3,600 Watts maximum, 48 volt battery bank > Suggested for any system where you are over ~2,400 Watt to 2,600 Watt AC load, 48 volt battery bus > ~1,000 Watts of AC inverter (solar array) maximum per 100 AH battery bank capacity, 24 volt battery bus > ~1,000 Watts of AC inverter (solar array) maximum per 200 AH of battery bank capacity, 12 volt battery bus > ~1,000 Watts of AC inverter (solar array) maximum per 400 AH of battery bank capacity. AMI/MIDI – These bolt-down fuses look just like MIDI fuses but are about half the size.

The next closest standard of circuit breaker is 10A. Use for inverters with DC input terminals that have a tubular hole with a set screw.Most of Pooxtra Inverter's cables sets are Standard Cables which are constructed from high quality welding cable and feature heavy duty terminals, dual wall heat shrink, and high temperature terminal protectors.We can make custom length cables for your application. 120-277 can be used for 120V, 240V and 277V. Use the correct size breaker. Buy online for free next day delivery or same day pickup at a store near you. Slow-burn fuses, like the MDL type, are timed fuses.

Using a test meter (not a test light), set to continuity (where the unit beeps when the probes are touched together), and touch each lead to the ends or to the test terminals of the fuse.

in this case the the inverter is the load of the batteries.

In case of continuous load, rate of %125 is applicable. Recommended Size of Circuit Breaker: 1.25 x 23.65A = 29.5A. The fuse size is usually stated in the manual and most inverters already have built in fuses/breakers. Note that the total length of the circuit is the round trip distance from power source (usually the battery) to the product and back.▲Select the CIRCUIT TYPE. If you want to get involved, click one of these buttons!

You are correct... We are talking about the DC input side to the DC to AC inverter. In other words, a load circuit having 24A, the appropriate size of breaker would be: Example 1: CB Size for 30A Non-contentious Load, Example 2: CB Size for 28A Contentious Load, Example 3: CB Size for 30A Non-contentious Load & 28A contentious Load, Related Post: Difference Between Relay and Circuit Breaker.

Bolt-down fuses like ANL and Class-T types require tools. NEC 240 first sections have requirements for max OCPD based on wire gauge up to #12. SFE and AG* type fuses are fast-blow fuses, they pop as soon as there is more draw than they are rated for. A 3-Poles circuit breaker can be used on 3-Phase system using either 2 or 3 poles. For example, a 30 amp circuit breaker will trip at 30 amp no matter if is it continuous or non continuous load. If the calculation is off by 2.73 amps....so be it. Find a fusible link on older cars very close to the battery. What size is the battery circuit breaker?

I had to replace one on my trolling motor batteries. They are ¼” in diameter, from 5/8” up to 1 7\16” long.

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The cable size depends on the distance between battery and inverter, when connecting the inverter to the battery always use an overcurrent protection device, such as a fuse or circuit breaker, and use the thickest wire available, in the shortest length practical.General recommendations:Inverter Size    Cable Gauge1000 Watts              #41500 Watts              #22000 Watts             #1/02500 Watts             #1/03000 Watts            #3/0NOTE: These are general size recommendations for inverters that utilize a single cable set (one positive and one negative cable) only, and may not be correct for all inverters or applications.