Blackburn PAA1093 PARRV CLAMP

Two. The PAA1093 is a two-conductor parallel groove clamp, so it joins one run conductor to one tap conductor in the grooves and clamps them with the bolt. If you need to land three or more conductors at one point, you need a multi-groove or multi-tap connector instead of this one.

The PAA1093 body is aluminum. Aluminum parallel groove connectors are the standard choice for aluminum to aluminum runs; for copper to copper or mixed copper and aluminum work, confirm the connector you pick is rated for those metals before you land the conductors, since an unrated aluminum-only body on copper invites galvanic corrosion at the joint.

The bolt is a 3/8 inch hex head taking a 9/16 inch wrench or socket. It is a bolted connection, so no crimp tool or die set is needed, which is why these get used for field taps and temporary connections where you may want to take the joint apart later.

Overall it measures 2-15/32 inch height by 2 inch length by 1-3/4 inch width, with the bolt head adding wrench swing on one side. Lay that out against your available clearance before you commit, especially inside a crowded pull box or between adjacent bus runs.

It ships bare with no insulation on the body. On any energized circuit the finished joint has to be insulated in the field, by tape, a molded cover or a heat shrink boot. On a grounding or bonding conductor that is normally left bare.

A parallel groove clamp lays two conductors side by side in machined grooves and squeezes them together with a bolt, so it goes on with hand tools and can be backed off and reused. A compression splice is crimped permanently with a die and tool. The PAA1093 covers wire or cable splicing duty in grounding and bonding work where you want a mechanical, serviceable joint rather than a permanent crimp.

Sold each. One clamp per unit, so order a piece per connection point plus spares. The manufacturer part number to specify is PAA1093 from Blackburn.