How many amps will number 2 aluminum wire carry?

Published by Charlie Davidson on

How many amps will number 2 aluminum wire carry?

Allowable Ampacities of Insulated Aluminum or CopperClad Aluminum Conductors

Conductor Size (AWG/KCMIL) 60°C/140°F TW, UF 90°C/194°F TBS, SA, SIS, FEP, FEPB, MI, RHH, RHW-2, THHN, THHW, THW-2, THWN-2, XHH, XHHW, XHHW-2, USE-2, ZW
2 75 100
1 85 115
1/0 100 135
2/0 115 150

What is #2 Thhn rated for?

Type THHN-THWN-2 is permitted for new construction or rewiring for 600-volt applications. Applications requiring Type THHN or THWN-2, the conductor is appropriate for use in wet or dry locations at temperatures not to exceed 90°C or not to exceed 75°C in oil or coolants.

What’s the ampacity of No 2 copper wire?

Allowable Ampacities of Insulated Copper Conductors

Conductor Size (AWG/KCMIL) 60°C/140°F TW, UF 75°C/167°F RHW, THHW, THW, THWN, XHHW, USE, ZW
4 70 85
3 85 100
2 95 115
1 110 130

What size aluminum wire is good for 100 amps?

Size of the Wire/Conductors Generally speaking, you should be able to use 1 AWG aluminum or 3 AWG copper for 100 ampere circuits.

What size ground do I need for a 200 amp service?

Four AWG is the minimum grounding driver size for a 200 amp service. The grounding driver for this 200-ampere feed is a 6 AWG copper driver. If it has a grounding impedance of 20 ohms or more, you must drive a second rod with 250,56 of the 2005 NEC.

What is THWN 2 wire used for?

Type THHN/THWN-2 building wire is intended for general-purpose applications as defined by the National Electrical Code (NEC). Type THHN/THWN-2 is permitted for new construction or rewiring for 600-volt applications. THHN wire is normally installed in conduit, and is used in residential and commercial applications.

What size wire do I need for 200 amp service?

Wiring 200 amp service requires either #2/0 copper wiring or #4/0 aluminum or aluminum clad wiring. Which wire used is determined by the voltage drop and length of the wiring. Many electrical contractors opt to use #4/0 aluminum or copper-clad wire.

What is the current density of aluminium wire?

The resistivity of Aluminium is usually around 2.65 to 2.82 × 10^-8 Ω m. Now, depending on these varying dimensions, and also on the contact resistance between the voltage source and the aluminium wire (if any) will determine its current density. .

How many amps does 6 mm2 aluminum wire have?

6 mm2 aluminum wire is somewhere between AWG #9 and #10. To be on the safe side we use AWG #10 (the smallest one) in the figure above and estimates the maximum current to be approximately 30 amps. Copper and Aluminum – Max. Current Diagram in Metric Units

What is the maximum current in aluminum wire?

Maximum current in aluminum and copper wire with ambient temperature 86oF (30oC): Example – Maximum Current in 6 mm2 Aluminum Wire. 6 mm2 aluminum wire is somewhere between AWG #9 and #10.

Which is the smallest AWG for copper wire?

To be on the safe side we use AWG #10 (the smallest one) in the figure above and estimates the maximum current to be approximately 30 amps. Copper and Aluminum – Max. Current Diagram in Metric Units

Categories: Users' questions