3M 7010398051 3M, Economy Vinyl Electrical Tape 1400, 3/4 in x ,60 ft, 1-1/2 in Core, Black, 10 rolls/carton, 100 rolls/Case

No. The 1400 is supplied in black only, so it works as a general wrap and jacket-repair tape but not for phase or voltage color coding. For marking A/B/C phases or identifying neutrals and grounds you need a colored vinyl tape set (red, yellow, blue, brown, orange, gray, white, green) rather than this black roll.

The 1400 measures 7 mil (0.178 mm) total thickness without liner. That is standard vinyl tape gauge, so half-lapped wraps build roughly 14 mil per pass, which is how electricians layer it over a wire nut or a taped splice for mechanical protection. For primary electrical insulation on higher-voltage work, crews typically specify a professional-grade 8.5 mil vinyl instead of an economy 7 mil.

Yes, the 1400 is a flame-retardant tape. It pairs a PVC (vinyl) backing with a rubber-resin adhesive, which is what gives it both electrical insulation and abrasion protection over a splice.

It ships 10 rolls per carton and 100 rolls per case, which is the practical buy for a maintenance shop or a multi-crew contractor standardizing one tape across trucks. Ordering by the case means every roll is the same 3/4 inch x 60 foot black roll, so there's no mismatch between stock in different vans.

The rubber adhesive on the 1400 is made to bond to PVC insulation, cable jackets, and metal, which is why it holds on conduit and raceway as well as on wire. It is an economy grade tape, so for cold-weather outdoor pulls or long-term UV exposure most electricians step up to an all-weather professional vinyl instead.