# What is the electrical resistance of 18 awg copper wire?

18 AWG copper wire is equivalent to 0.75mm2 nominal. The
resistance of a particular copper wire depends on a number of
factors like ambient temperature, the type and number of strands of
conductor, when plated, the type of plating metal (e.g. tin,
silver), etc.

A good value to use for solid #18 AWG copper is 21.8 ohms/km.

Please see the useful **Related Link** link below.

### What are some commercial uses for 9 solid copper wire?

Beats me, the National Electrical Code does not list a #9 awg wire. Read More

### What is gauge 8 means in copper electrical wire?

In cooper electrical wire, gauge 8 means the wire size assigned by the American Wire Gauge (AWG) system. That is why you always will hear about AWG WIRE, it's not the type of wire is the gauge that we are talking about. A gauge 8 wire will be used for connections requiring from 40-45 amps to a maximum of 73 amps. (24 for power transmission). Diameter of an 8 AWG wire is 0.12849 inches. 8… Read More

### How does increasing the wire gauge from awg 22 to awg 26 generally effect resistance?

Resistance will increase. Read More

### What is the size wire for 200 amp?

At least 000 AWG copper or better yet, 0000 AWG copper. Another consideration is how far the 200 Amps are to be carried. Wire has resistance and 0000 copper has a resistance of .04901 Ohms per thousand feet. At 200 Amps, this means that over one thousand feet the voltage will be 9.8 Volts lower than at the starting point. Read More

### What is the required wire size wire for 100 amp service?

3 AWG in copper and 2 AWG in aluminum. Read More

### How decide Electrical Main Feeder size?

It is based on the amperage of the service panel in a single phase home panel useing copper wire use. 100 amp use AWG # 3 copper 200 amp use AWG # 3/0 copper Read More

### What is the required wire size for 100?

A 100 amp service requires that you use AWG 4 copper wire or AWG 2 aluminum wire. Read More

### What is the resistance of an 8 gauge wire?

According to the Wire resistance tables, 8 AWG has a resistance of 0.6282 ohms per thousand feet. Read More

### What size copper wire should be used for a 125ft 15amp branch circuit if a maximum voltage drop of 3.2 is allowed?

For typical house wiring you would use 14 AWG wire for 15 amps. The resistance of 125 ft of 15 AWG copper is about .316 ohms. For a full load of 15 amps your voltage drop would be 4.74 volts. If you up the size to 12 AWG the resistance is .198 ohms and the voltage drop is 2.97 volts. So for your application use 12 AWG with a 15 amp breaker. Read More

### What size wire is required for 325 amp service?

A 350 MCM copper conductor with an insulation rating of 90 degree C is rated at 350 amps. Read More

### What gauge wire is required for a 90 amp breaker?

3 AWG in copper and 2 AWG in Aluminum. Read More

### What size aluminum wire for a 60 amp service?

3 AWG in AL if available. 4 AWG in copper. Read More

### What size wire do you need to run to a 100 amp panel?

3 AWG in copper and 2 AWG in aluminum. Read More

### What size wire is needed for to ground a 200 amp service?

4 AWG in Copper and 2 AWG in Aluminum. Read More

### Which wire is smallest in AWG?

The larger the AWG number the smaller the wire. 10 AWG wire can carry more current than 12 AWG wire. The wire sizes of 24 and 26 are the smallest that are used in the electrical. See related links below Read More

### Will a 10 ga copper wire carry 20 amps at 400 ft?

The resistance for 400 ft. of 10 AWG copper is .4 ohms. This would be a voltage drop of (.4 x 20) or 8 volts. For 120 VAC service this is a 6% which is a bit high. At 240 volts it is 3%. At 8 AWG the resistance is .251 ohms which will give you better performance. Read More

### What size wire for 100 amp residential?

Service entrance wire must be AWG # 4 Copper wire. Read More

### What size aluminum wire for a 200 amp service?

AWG # 4/0 alluminum or AWG # 3/0 copper Read More

### What size ground wire is needed for 400 amp service?

According to 2008 NEC, the min size of the wire is 3 AWG copper or 1 AWG aluminuim. Read More

### 12 awg for 20 amp rateing?

Yes, 12 AWG is good for 25 Amps if copper wire. If aluminum wire, then good for 20 Amps. Read More

### What size wire do you need for a 100amp braker?

Service entrance wire should be AWG #3 copper. Read More

### What size of copper wire can carry 30 amps?

30 amps of current requires at least AWG 10 copper wire. (US NEC) Read More

### How many amps in a 2 mm copper wire?

There are zero amps in a 2 mm copper wire. The amps capacity (ampacity) of a copper 2 mm wire is 20 amps. A 2 mm wire is equivalent to a #12 AWG wire. Read More

### What size feeder wire for 100 amps?

Service wire for 100 amps requires AWG #3 copper. Read More

### What size feeder do you use for a 250 amp panel box?

Use AWG #1 copper service entrance wire and #4 copper ground wire. Read More

### What wire size for 100 amp service at 240 volt?

Service entrance wire size is AWG # 3 copper. Read More

### Wire size for 125 amp service?

2 AWG wire in copper and 1/0 (one ought) in aluminum. Read More

### What is the amp size of 10 awg wire?

A #10 copper wire 90 degree insulation is rated at 30 amps. Read More

### What size wire and breaker do you need for a 200 amp continuous duty circuit?

AWG 2/0 copper wire. Read More

### What wire size is needed to ground a 300 amp service panel in USA?

#2 AWG copper to water main #6 AWG copper to ground rod Read More

### What is the largest wire that will fit in a 40 amp breaker?

You should not use any wire smaller than 8 AWG COPPER in a 40 amp breaker. If you have any questions about your application, you should contact a local electrical contractor for your own safety. Read More