What Does 250 Mcm Welding Cable Mean?

Welding cable is a common type of single conductor portable cord and 250 MCM is a gauge size of copper

. Every type of electrical cable has a gauge size which is also known as AWG or American Wire Gauge. The outer diameter of the copper alone determines the AWG size it is and the amount of power it can handle in a particular application.

Welding cable 250 MCM is one size larger than 4/0 welding cable which means it also has more copper in it. Both types are manufactured with 30 AWG copper strands but the 250 MCM cable will have many more strands in order to reach the next outer diameter level for a higher gauge size. The next size larger is 350 MCM and then 500 MCM which are all decently popular items in the industry. Even though you may not have heard of an MCM cable before its just a gauge size used to measure the amount of AMPS that can travel through it.

Welding cable is a type of portable cord product that can be used indoors and outdoors but not in conduit or directly underground. The gauge sizes range from 6 to 500 MCM and it is rated for 600 volts and 90C. Standard applications are welders, generators and industrial portable cord applications requiring less than 600 volts.

If you are unsure on the 250 MCM meaning then you will definitely want to consult your electrician about the size of wire you need. Buying the wrong size will either complicate the application because its too small or cost you far too much if its too big. You should also speak to the wire and cable supplier that youre going to buy it from about your application so they can possibly find you something cheaper. Something cheaper would only involve the insulation and stranding, it would not change the gauge size. The gauge size should only be calculated by a professional electrician that knows the NEC code to make sure you pass inspection when the time comes.

A couple of similar cables would be a Type W and DLO cable. Each of them have rubber insulation but they have higher voltage ratings that welding cable doesnt reach. Even though they are more expensive your application might call for a certain amount of voltage which welding cable may not be able to handle. Thats something your distributor can discuss with you to let you know your available options.

by: Christopher Bell

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