How To Repair A Damaged Cable Jacket With 3M Mining Cable Splice Kits 3100 Series

Published 10 Jan 2019

A series of How-To videos for repairing, jointing and terminating cables using 3M Cold Shrink & Scotchcast products.

uploaded by Chris Dodds - Thorne & Derrick Sales & Marketing Manager

Repairing Mining Cables

This video by 3M Electrical shows how to apply 3M Mining Cable Splice Kits when repairing a damaged cable jacket or sheath.

3M Mining Cable Splice Kits 3100 Series may be used for flexible conduit and cable jacket repairs, as well as for cable splicing and jointing three conductor mine and portable cables, type 3M SHD-GC, MPF GC, and MPF.

The 3M video shows how to repair the damaged cable jacket by using 3M Mining Cable Splice Kits type 3100, 3103 and 3104.

3M Cable Splice Kit 3100

2-Conductor Flat W-Type Cable

Remove the damaged cable jacket and taper the jacket approximately one inch
Scuff and clean three inches of the cable jacket beyond the split end
Bind cable assembly with 3M Temflex Vinyl Electrical Tape 1700P staring one inch above the split or top of the taper
Apply half lap layers of Scotch Brand Linerless Rubber Splicing Tape 130C to one inch past the end of the opposite split or top of the taper
Apply half lap layers filling all voids until the area is returned to greater than or equal to the original cable profile
Start two inches from the 3M Scotch 130C splicing tape and apply one and a half layers of 3M Scotchcast Heavy Duty Mining 31 tape continuing two inches past the end of the 130C tape
Always wrap the Scotch 31 tape towards the machine end of the cable
Start one inch past the 3M 31 Mining Tape and apply three and half lap layers of 3M 1700P to each end to temporary secure the ends of the 31 tape jacket until the jacket reaches full bond

3M Cable Splice Kit 3103

15kV Type SHD-GC Cable

Remove the damaged cable jacket and taper the jacket approximately two inches
Scuff and clean four inches of the cable jacket beyond each split end bundle of the cable assembly and bind with 3M Temflex Vinyl Electrical Tape 1700P tape
Cover the 3M 1700P tape with one half lap layer of Scotch Brand Rubber Mastic Tape 2228
Wrap half lap layers of Scotch Brand Linerless Rubber Splicing Tape 3M 130C building up and across the splice until it is equal to or greater than the original jacket thickness
Extend one inch past the top of the jacket tapers
Start two inches beyond the 130C tape and wrap one half lap layer of 3M Scotchcast Heavy Duty Mining Tape 31 two inches beyond the 130C tape on the opposite end
Always wrap the 3M Scotch 31 tape towards the machine end of the cable. Please Note: for purposes of this video only the MSHA number is not printed on the mining tape Scotch 31
Start one inch past the 31 tape and apply three and half lap layers of 3M 1700P tape to each end to temporarily secure the ends of the Scotch 31 tape jacket until the jacket reaches full bond

3M Cable Splice Kit 3104

2kV Type SHD-GC Cable

Remove the damaged cable jacket and taper the jacket approximately two inches
Scuff and clean four inches of the cable jacket beyond each split end
Bundle the cable assembly and bind with 3M Temflex Vinyl Electrical Tape 1700P
Starting half way up the tapers wrap half lap layers of 3M Scotch Brand 130C Tape building up and across the splice until the taper is equal or greater than the original jacket thickness
Extend pas the top of the jacket tapers
Start two inches beyond the 3M 130C tape and wrap one half lap layers of mining tape Scotch 31 extending two inches beyond the 130C tape on the opposite end
Always wrap the 3M Scotch 31 tape towards the machine end of the cable
Start one inch past the 3M Scotch 31 tape and apply three half lap layers of 3M Scotch 1700P tape to each end to temporarily secure the ends of the Scotch 31 tape jacket until the jacket reaches full bond.

3M Mining Cable Splice Kits 3100 Series

We hope you find this video informative and educational, contact T&D for technical support, quotations and stock availability for 3M Mining Cable Splice Kits .

3M Scotch Tapes

Further details on the complete range of 3M Scotch Electrical Tapes can be found here:

➡ Visit 3M Electrical for further information about joints, terminations, tapes and insulation to seal, repair, splice and connect LV MV HV cables.