Wire Gauge Conversions

Gauge to Inches to Millimeters

AWG Gauge	Inch (Decimal)	Millimeter (mm)	Inch (Fraction)	AWG Gauge	Inch (Decimal)	Millimeter (mm)	Inch (Fraction)
1	0.289	7.348	.	17	0.045	1.149	.
2	0.258	6.543	.	18	0.040	1.024	.
.	0.250	6.350	1/4	19	0.036	0.912	.
.	0.234	5.953	15/64	20	0.032	0.812	.
3	0.229	5.827	.	.	0.031	0.795	1/32
.	0.219	5.556	7/32	21	0.028	0.723	.
4	0.204	5.189	.	22	0.025	0.644	.
.	0.203	5.154	11/64	23	0.023	0.573	.
.	0.188	4.762	3/16	24	0.020	0.511	.
5	0.182	4.621	.	25	0.018	0.455	.
.	0.172	4.366	11/64	26	0.016	0.405	.
6	0.162	4.115	.	.	0.016	0.396	1/64
.	0.156	3.969	5/32	27	0.014	0.360	.
7	0.144	3.664	.	28	0.013	0.321	.
.	0.141	3.572	9/64	29	0.011	0.286	.
8	0.128	3.263	.	30	0.010	0.255	.
.	0.125	3.175	1/8	31	0.0089	0.226	.
9	0.114	2.906	.	32	0.0080	0.200	.
.	0.109	2.778	7/64	33	0.0071	0.180	.
10	0.102	2.588	.	34	0.0063	0.160	.
.	0.094	2.381	3/32	35	0.0056	0.142	.
11	0.091	2.304	.	36	0.0050	0.130	.
12	0.081	2.052	.	37	0.0045	0.114	.
.	0.078	1.984	5/64	38	0.0040	0.100	.
13	0.072	1.828	.	.	.	.	.
14	0.064	1.628	.	.	.	.	.
.	0.063	1.588	1/16	.	.	.	.
15	0.057	1.449	.	.	.	.	.
16	0.051	1.291	.	.	.	.	.
.	0.047	1.191	3/64	.	.	.	.

Recommended Cable Size by Power and Distance
Total RMS	Distance
Total RMS	1M	2M	3M	4M	5M
100 W	10 AWG	10 AWG	8 AWG	8 AWG	4 AWG
200 W	10 AWG	8 AWG	8 AWG	4 AWG	4 AWG
400 W	8 AWG	8 AWG	4 AWG	4 AWG	4 AWG
600 W	8 AWG	4 AWG	4 AWG	4 AWG	4 AWG
800 W	4 AWG	4 AWG	4 AWG	2 AWG	2 AWG
1000 W	4 AWG	4 AWG	2 AWG	2 AWG	2 AWG
1400 W	4 AWG	2 AWG	2 AWG	2 AWG	2 AWG

Current Draw by Amp
Total RMS	Amps
100 W	16A
200 W	32A
400 W	64A
600 W	96A
800 W	128A
1000 W	160A
1200 W	172A
1400 W	188A

Power Cable Specs
Cable Size	Capacity
1/0 AWG	350A
2 AWG	225A
4 AWG	150A
8 AWG	100A
10 AWG	60A
12 AWG	40A
14 AWG	25A
16 AWG	15A

Maximum Wire Lengths For TWO CONDUCTOR Copper Wire

Wire Size	2 ohm load	4 ohm load	6 ohm load	8 ohm load
22 AWG	3 feet max	6 feet max	9 feet max	12 feet max
20 AWG	5 feet max	10 feet max	15 feet max	20 feet max
18 AWG	8 feet max	16 feet max	24 feet max	32 feet max
16 AWG	12 feet max	24 feet max	36 feet max	48 feet max
14 AWG	20 feet max	40 feet max	60 feet**	80 feet**
12 AWG	30 feet max	60 feet**	90 feet**	120 feet**
10 AWG	50 feet max	100 feet**	150 feet**	200 feet**

This return considered, as in speaker runs (Each for stereo pair)

For example: you can use#18 wire for a 25 foot run to a nominal 8 ohm speaker, but if the run is increased to 35 feet, #16 wire must be used. (**) 50 feet is the maximum recommended length for normal line cord or Oxygen-Free copper wire.

SCREW GAUGE

Woodscrews are gauged by screw gauge
Where the bigger the number, the bigger the screw

Wood Screw Data
Nominal Diameter			Clearance	Pilot Hole
Gauge	Decimal inch	mm	Hole	Hardwood	Softwood	Metal
2	.082	2.08	^3/₃₂”	^1/₁₆”	-	-
3	.094	2.39	^3/₃₂”	^1/₁₆”	-	-
4	.108	2.74	^7/₆₄”	^1/₁₆”	-	^5/₆₄”
5	.122	3.10	^1/₈”	^5/₆₄”	-	-
6	.136	3.45	^9/₆₄”	^3/₃₂”	^1/₁₆”	^3/₃₂”
7	.150	3.81	^5/₃₂”	^3/₃₂”	^1/₁₆”	-
8	.164	4.17	^11/₆₄”	^3/₃₂”	^5/₆₄”	^{7/₆₄” or 1/₈”}
9	.178	4.52	^3/₁₆”	^7/₆₄”	^5/₆₄”	-
10	.192	4.88	^13/₆₄”	^7/₆₄”	^5/₆₄”	^{9/₆₄” or 5/₃₂”}
12	.220	5.59	^15/₆₄”	^1/₈”	^3/₃₂”	^{11/₆₄” or 3/₁₆”}
14	.248	6.30	^1/₄”	^9/₆₄”	^7/₆₄”	^{13/₆₄” or 7/₃₂”}
16	.276	7.01	^9/₃₂”	^5/₃₂”	^1/₈”	-
18	.304	7.72	^5/₁₆”	^11/₆₄”	^1/₈”	-
20	.332	8.43	^11/₃₂”	^3/₁₆”	^9/₆₄”	-

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Select the Gauge of wire:
Gauge Script C/O Online Conversion
Washburn & Moen		British Imperial Standard (S.W.G.)
in.	mm	in.	mm
Birmingham / Stubs		[ Table ] American (A.W.G.) / Brown & Sharpe
in.	mm	in.	mm

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Gauge Script C/O Online Conversion

Washburn &Moen

British ImperialStandard (S.W.G.)

Birmingham /Stubs

[ Table ]American (A.W.G.) /Brown & Sharpe

Maximum Wire Lengths For TWO CONDUCTOR Copper Wire

Select the Gauge of wire:

Washburn &
Moen

British Imperial
Standard (S.W.G.)

Birmingham /
Stubs

[ Table ]
American (A.W.G.) /
Brown & Sharpe