Voltage Drop Calculator

Wire / cable voltage drop calculator and how to calculate.

• Voltage drop calculator
• Voltage drop calculations

Voltage drop calculator

Wire type:	-- select -- Copper Aluminum Carbon steel Electrical steel Gold Nichrome Nickel Silver
Resistivity:		Ω·m
Wire diameter size:		AWG inch mm
Wire/cable length (one way):		feet meters
Current type:	DC AC - Single phase AC - Three phase
Voltage in volts:		V
Current in amps:		A
Voltage drop in volts:		V
Percentage of voltage drop:		%
Wire resistance:		Ω

* @ 68°F or 20°C

** Results could probable alternate with real wires: one-of-a-type resistivity of fabric and quantity of strands in wire.

*** For wire duration of 2x10ft, cord period have to be 10ft.

Voltage drop calculations

DC/single degree calculation

The voltage drop V in volts (V) is equal to the twine cutting-edge I in amps (A) instances two times one manner twine period L in feet (toes) instances the cord obstruction in keeping with a thousand feet R in ohms (Ω/kft) partitioned by means of a thousand:

V_{drop (V)} = I_{cord (A)} × R_twine(Ω)

= I_{cord (A)} × (2 &instances; L_(ft) &instances; R_wire(Ω/kft)/a thousand_(toes/kft))

The voltage drop V in volts (V) is same to the twine modern-day-day I in amps (A) instances two times one way wire length L in meters (m) instances the wire obstruction according to 1000 meters R in ohms (Ω/km) partitioned thru 1000:

V_{drop (V)} = I_{wire (A)} × R_twine(Ω)

= I_{wire (A)} &instances; (2 &instances; L_(m) &instances; R_{cord (Ω/km)}/one thousand_(m/km))

3 degree calculation

The line to line voltage drop V in volts (V) is equivalent to square base of multiple times the wire current-day I in amps (A) instances one manner cord length L in ft (ft) times the twine obstruction consistent with a thousand feet R in ohms (Ω/kft) isolated via a thousand:

V_{drop (V)} = √three × I_{wire (A)} × R_{twine (Ω)}

= 1.732 × I_{wire (A)} × (L_(toes) × R_{cord (Ω/kft)}/one thousand_(feet/kft))

The line to line voltage drop V in volts (V) is same to rectangular base of multiple times the wire cutting-edge I in amps (A) instances one way wire duration L in meters (m) times the twine opposition consistent with a thousand meters R in ohms (Ω/km) remoted through 1000:

V_{drop (V)} = √3 &instances; I_{twine (A)} × R_{wire (Ω)}

= 1.732 &instances; I_{cord (A)} × (L_(m) × R_{cord (Ω/km)}/a thousand_(m/km))

Wire size calculations

The n diploma cord breadth d_n in inches (in) is identical to 0.005in times 92 raised to the stress of 36 brief test variety n, separated by using 39:

d_{n (in)} = 0.Half of in × 90 two^(36-n)/39

The n test cord breadth d_n in millimeters (mm) is identical to zero.127mm times ninety two raised to the pressure of 36 much less measure huge range n, partitioned through 39:

d_{n (mm)} = 0.127 mm &instances; 92^(36-n)/39

Wire cross sectional place calculations

The n degree wire's skip sercional area A_n in kilo-spherical mils (kcmil) is identical to more than one times the square cord width d in inches (in):

A_{n (kcmil)} = one thousand&instances;d_n² = 0.Zero.Five in² &instances; 92^{(36-n)/19.Five}

The n degree cord's cross sercional place A_n in rectangular inches (in²) is equal to pi separated thru more than one times the square cord width d in inches (in):

A_{n (in}2₎ = (π/four)×d_n² = 0.000019635 in² &instances; ninety two^{(36-n)/19.Five}

The n check twine's pass sercional area A_n in rectangular millimeters (mm²) is identical to pi partitioned with the resource of more than one times the square cord breadth d in millimeters (mm):

A_{n (mm}2₎ = (π/four)×d_n² = 0.012668 mm² × 90 two^{(36-n)/19.Five}

Wire competition calculations

The n take a look at wire competition R in ohms consistent with kilofeet (Ω/kft) is identical to 0.3048&instances;1000000000 times the cord's resistivity ρ in ohm-meters (Ω·m) remoted by means of 25.4² instances the circulate sectional place A_n in square inches (in²):

R_{n (Ω/kft)} = zero.3048 &instances; 10^nine &instances; ρ_(Ω·m)/(25.Four² &instances; A_{n (in}2₎)

The n take a look at wire competition R in ohms consistent with kilometer (Ω/km) is same to multiple instances the twine's resistivity ρ in ohm-meters (Ω·m) separated with the resource of the go sectional vicinity A_n in square millimeters (mm²):

R_{n (Ω/km)} = 10⁹ &instances; ρ_(Ω·m)/A_{n (mm}2₎

AWG chart

AWG #	Diameter (inch)	Diameter (mm)	Area (kcmil)	Area (mm2)
0000 (4/0)	0.4600	11.6840	211.6000	107.2193
000 (3/0)	0.4096	10.4049	167.8064	85.0288
00 (2/0)	0.3648	9.2658	133.0765	67.4309
0 (1/0)	0.3249	8.2515	105.5345	53.4751
1	0.2893	7.3481	83.6927	42.4077
2	0.2576	6.5437	66.3713	33.6308
3	0.2294	5.8273	52.6348	26.6705
4	0.2043	5.1894	41.7413	21.1506
5	0.1819	4.6213	33.1024	16.7732
6	0.1620	4.1154	26.2514	13.3018
7	0.1443	3.6649	20.8183	10.5488
8	0.1285	3.2636	16.5097	8.3656
9	0.1144	2.9064	13.0927	6.6342
10	0.1019	2.5882	10.3830	5.2612
11	0.0907	2.3048	8.2341	4.1723
12	0.0808	2.0525	6.5299	3.3088
13	0.0720	1.8278	5.1785	2.6240
14	0.0641	1.6277	4.1067	2.0809
15	0.0571	1.4495	3.2568	1.6502
16	0.0508	1.2908	2.5827	1.3087
17	0.0453	1.1495	2.0482	1.0378
18	0.0403	1.0237	1.6243	0.8230
19	0.0359	0.9116	1.2881	0.6527
20	0.0320	0.8118	1.0215	0.5176
21	0.0285	0.7229	0.8101	0.4105
22	0.0253	0.6438	0.6424	0.3255
23	0.0226	0.5733	0.5095	0.2582
24	0.0201	0.5106	0.4040	0.2047
25	0.0179	0.4547	0.3204	0.1624
26	0.0159	0.4049	0.2541	0.1288
27	0.0142	0.3606	0.2015	0.1021
28	0.0126	0.3211	0.1598	0.0810
29	0.0113	0.2859	0.1267	0.0642
30	0.0100	0.2546	0.1005	0.0509
31	0.0089	0.2268	0.0797	0.0404
32	0.0080	0.2019	0.0632	0.0320
33	0.0071	0.1798	0.0501	0.0254
34	0.0063	0.1601	0.0398	0.0201
35	0.0056	0.1426	0.0315	0.0160
36	0.0050	0.1270	0.0250	0.0127
37	0.0045	0.1131	0.0198	0.0100
38	0.0040	0.1007	0.0157	0.0080
39	0.0035	0.0897	0.0125	0.0063
40	0.0031	0.0799	0.0099	0.0050

In Physical technology, the voltage drop is characterised as how lots voltage drop/misfortune happens as a piece of the circuit or through all of the circuit because of the impedance. Generally, the voltage drop happens due to the extended opposition in the circuit. Different motives for voltage drop might be due to additional components, institutions or the high-opposition publications, accelerated load, and many others.

It is a alternate mini-pc used to exchange over the characteristics in Standard cord measure (SWG) to millimeters (mm) and rectangular millimeters (mm2). It is easy to apply as it simply has a solitary text subject where you'll pick out the measure wide variety. Click the down bolt at the right 1/2 of the 'select SWG' to give you the choices. Whenever you have got picked the appropriate well worth, click on the 'Ascertain' button to execute the conversion.

This range cruncher likewise has the 'Reset' button which contains out an exchange position. Deleting all statistics of the past calculations is utilized. It is the fastest method to clearing the textual content fields at whatever factor you want to carry out new adjustments. The results can be shown underneath the two controls. You can decide the Measurement in millimeters, Breadth in inches and the Cross sectional region in square millimeters.

Recipe of running out the cord move sectional area An (mm2) = (∏/four) x dn2, and that implies that the n take a look at twine's go sectional area in rectangular millimeters is registered via duplicating the square cord measurement in millimeters through pi partitioned with the aid of four.

For example,

Assuming that the Standard cord degree is forty seven (SWG), what are the Breadth in millimeters, square millimeters and inches?

Solution

The foremost method can be to choose the take a look at range 47 within the number one textual content discipline. Click the Work out button to execute a rapid alternate. Your results may be shown as;

Measurement in millimeters = zero.051 (mm)

Measurement in Inches = zero.002 (inches)

Cross sectional area in rectangular millimeters = 0.0020 (mm2)

On the off threat that you desire to finish new changes from SWG to mm, make use of the 'Reset' button to clean the textual content fields at the double. You can then pick out the take a look at wide variety and perform a similar method to advantage your results in millimeters, inches and rectangular millimeters. It is additionally important to understand that this number cruncher simply arrangements with adjustments from SWG to mm and no longer the alternative. You can continuously arrange the 2 controls to play out a few computations inside a short length.