Small AC motors and Inverters
Disappointed that my ancient Mod Sine Wave inverter (140W cont, 200W surge) shuts down with a 120W coffee grinder. Works ok with the 400W (cont) MSW inverter built-into the truck, though a little ...
Forum Discussion
Some advantages of doubling the wires used::
Here is the math (12.7v DC used as supply voltage)::
(round trip)
6ga at 8 feet 100 amps DUAL WIRES per line
Voltage drop: 0.16
Voltage drop percentage: 1.26%
Voltage at the end: 12.54
4ga at 8 feet 100 amps
Voltage drop: 0.20
Voltage drop percentage: 1.57%
Voltage at the end: 12.5
4ga at 8 feet 100 amps DUAL WIRES per line
Voltage drop: 0.099
Voltage drop percentage: 0.78%
Voltage at the end: 12.601
I really hope this formatted correctly: Here is an excerpt:
AWG Diam(mm)(in) Square Resit single 3 4-6 7-24
25-42 43+ core
8 3.25 0.13 8.30 2.2 75 40 32 28 24 20
6 4.115 0.17 13.30 1.5 95 55 44 38 33 27
4 5.189 0.20 21.15 0.8 120 70 56 49 42 35
3 26.65 154 80 64 56 48 40
2 6.543 0.26 33.62 0.5 170 95 76 66 57 57
1 7.348 0.29 42.41 0.4 180 110 88 77 66 55
0 (1/0) 8.252 0.33 53.49 0.31 200
Yup... totally failed at formatting.
It does however seem to be inline with the widely available AWG/Amperage charts available online. **12v does not need to conform to NEC.
I am aware NEC has much higher standards which may be the charts you are using?
Here is the math (12.7v DC used as supply voltage)::
(round trip)
6ga at 8 feet 100 amps DUAL WIRES per line
Voltage drop: 0.16
Voltage drop percentage: 1.26%
Voltage at the end: 12.54
4ga at 8 feet 100 amps
Voltage drop: 0.20
Voltage drop percentage: 1.57%
Voltage at the end: 12.5
4ga at 8 feet 100 amps DUAL WIRES per line
Voltage drop: 0.099
Voltage drop percentage: 0.78%
Voltage at the end: 12.601
I really hope this formatted correctly: Here is an excerpt:
AWG Diam(mm)(in) Square Resit single 3 4-6 7-24
25-42 43+ core
8 3.25 0.13 8.30 2.2 75 40 32 28 24 20
6 4.115 0.17 13.30 1.5 95 55 44 38 33 27
4 5.189 0.20 21.15 0.8 120 70 56 49 42 35
3 26.65 154 80 64 56 48 40
2 6.543 0.26 33.62 0.5 170 95 76 66 57 57
1 7.348 0.29 42.41 0.4 180 110 88 77 66 55
0 (1/0) 8.252 0.33 53.49 0.31 200
Yup... totally failed at formatting.
It does however seem to be inline with the widely available AWG/Amperage charts available online. **12v does not need to conform to NEC.
I am aware NEC has much higher standards which may be the charts you are using?
