Machine Tool Wire Vs Thhn

The nylon jacket is essential for mechanical protection and protection from abrasion when the wire is fished through conduit.
Machine tool wire vs thhn. Mtw machine tool wire is only allowed for this purpose. This high stranding of bare copper gives the wire its superior flexibility compared to that of thhn building wire. Although machine tool wire is qualified for many wiring applications it is a simply. Depending on the size can be either stranded or solid.
Thhn thwn mtw is a general purpose insulation system for field wiring. Mtw is used for the internal wiring of appliances including refrigeration equipment automatic washers air conditioning equipment control wiring for machine tools and in various other building applications. As other post indicate it is a poor choice for control panel interior wiring. It dress very nicely due to its flexiability.
Machine tool wire or most commonly referred to as mtw is a stranded flexible hook up wire. The pvc insulation is meant for use in most household appliances. Thhn stands for thermoplastic high heat resistant nylon coated. 10 12 and 14awg are 19 strands all others are highly flexible stranding constructions.
It is a pvc hookup wire and although machine tool wire is qualified for many wiring applications it is a simply constructed wire that is made up of a highly stranded bare copper conductor. The most popular type of building wire used in construction is thermoplastic high heat resistant nylon coated thhn wire. This tracer wire is used in industrial commercial and residential applications where it is dry and less than 194 f. Mtw stands for machine tool wire.
Can be solid or stranded depending on the size. Thhn wire comes in a variety of characteristics. Machine tool wire mtw consists of stranded soft annealed copper conductors insulated with polyvinylchloride pvc. Thhn wire is also commonly used in machine tools control circuits and some appliances.
Mtw wire is used indoors only because it cannot resist water at all. While both can be used for machine tool appliance and control circuit wiring the difference lies in the fact that tffn is used in applications where the nec designates fixture wire while thhn is not. Because tffn and thhn wire have different ratings and are available in different gauge sizes there are slight differences in their uses. The difference between thhn and mtw is the nylon over the pvc insulation on the thhn wire.
Mtw is ul rated for 600 volts. Nylon outer jacket with a polyvinylchloride pvc insulation. This wire is often found in smaller gauges and sometimes with tinned ends for ease in soldering. Thhn wire can be found in a variety of forms.