MTW wire

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dm9289

Industrial Maintenance Electrician
Location
Pennsylvania
Occupation
Industrial process repair/ maintenance Electrician
We have many places in our facility with MTW wire I know it as machine tool wire. Is its ampacity the same as TW I could not find any MTW in the tables
 

dm9289

Industrial Maintenance Electrician
Location
Pennsylvania
Occupation
Industrial process repair/ maintenance Electrician
Thank you for the cut sheet, the wire was in a live disconnect so I did not want to move it around but I am pretty sure I only saw MTW. I think I may need to replace it anyway. It is tapped to a 500kcm overhead protected at 300amp about 30ft up so I believe the tap conductors need to be at least 1/3 the ampacity of the 300 amp protection. So i guess I will have to switch to a #3 THHN
 
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