Episode 47 Inverter ANL fuse install and load test

Adding ANL Fuses to the Tigerclaw 1500w pure sine wave inverter, and also a load test on a 1500 watt quartz heater. i toss a 300 a fuse into a 2 gauge wire (pos) to TEST a load . the proper fuse/wire for this test should be about 200-250A fuse. for the batteries.My battery Red power wire is a 0AWG rated at 300amps according to its printing on the casing. Please use the chart below to figure out your rating/wire size for your loads.

my peak load on the inverter is 3000 watt, thus this max rating test with a300 amp fuse.

The fuse rating is "generally" (watts/volts) x 1.25, example: lets say 1500 watts normal run usage, so 1500 divided by the volts (12v dc in my case) is 125, now x1.25 = 156.25 ,

I Personally just use a 10:1 rule of thumb ratio so 100 watt 1 amp fuse etc.. so 3000 watt load on my peak is 300 amp, give or take a few. i tested it with a 150 on a 1500watt load and the moment it went over 1500 watts the fuse popped, so it calculates close enough for me. but for those that need official charts, scroll down below the links.

here is some science and data..

The fuse size should be based upon the amperage draw of whatever you are running, not the watt rating of the inverter SIZE YOUR FUSES ACCORDINGLY!

A general rule for any Anneaaled CU Wire, also those American Wire Gauge charts are for chassis wiring. and they are always downgraded. stranded vs solid core, voltage drop, temperatures, thickness, thermal conductivity all play roles. its such a short run, its totally capable. those ratings are just a rule of thumb. the marking on the cable will display its "rated limits" just don't use cheap a$$ cables.

--wire size guide for 12v fuse ratings.

00 awg 400 amps
0 awg 325 amps
1 awg 250 amps
2 awg 200 amps
4 awg 125 amps
6 awg 80 amps
8 awg 50 amps
10 awg 30 amps
12 awg 20 amps
14 awg 15 amps
16 awg 7.5 amps


-- guide for watts to amps calculations for fuse ratings here

Watts To Amps At 12V (For Batteries)
Watts: Amps (at 12V):
1 Watt to amps at 12V: 83 mA (milliamps)
10 Watts to amps at 12V: 830 mA
50 Watts to amps at 12V: 4.17 Amps
100 Watts to amps at 12V: 8.33 Amps
200 Watts to amps at 12V: 16.67 Amps
300 Watts to amps at 12V: 25.00 Amps
400 Watts to amps at 12V: 33.3 Amps
500 Watts to amps at 12V: 41.7 Amps
600 Watts to amps at 12V: 50.0 Amps
700 Watts to amps at 12V: 58.3 Amps
800 Watts to amps at 12V: 66.7 Amps
900 Watts to amps at 12V: 75.0 Amps
1000 Watts to amps at 12V: 83.3 Amps
1100 Watts to amps at 12V: 91.7 Amps
1200 Watts to amps at 12V: 100.0 Amps
1300 Watts to amps at 12V: 108.3 Amps
1400 Watts to amps at 12V: 116.7 Amps
1500 Watts to amps at 12V: 121.7 Amps
1800 Watts to amps at 12V: 150.0 Amps
2000 Watts to amps at 12V: 166.7 Amps
2500 Watts to amps at 12V: 208.3 Amps
3000 Watts to amps at 12V: 250.0 Amps


MY setup at the time of making this video,

Fuse Holder: general eBay! search item may or may not be there still

https://www.ebay.com/itm/264752080213

Inverter:
OSP Tigerclaw 1500/3000 Pure Sine-wave inverter

Batteries:
(12) CSB 12v/75ah =900AH

SOLAR
(6) whatever brand 150W rando ebay panels in parallel 12v feeds to PWM charge controller