Blackburn PAA12-B1-5 PARALLEL GROOVE CLAMP 1 BOLT 4/0-2

The PAA12-B1-5 is a 4/0 to 2 range clamp, so it accepts conductors from 2 AWG up to 4/0 AWG in its grooves. It holds two conductors, one per groove, which is what makes it a parallel groove (tap) connection rather than an end-to-end splice.

The PAA12-B1-5 body is aluminum. Aluminum-bodied parallel groove clamps are intended for aluminum-to-aluminum connections unless the clamp is specifically dual-rated AL9CU; putting bare copper against bare aluminum creates a galvanic couple that corrodes. For copper grounding electrode conductors or copper-to-aluminum taps, use a clamp marked for both metals.

Single bolt. The bolt is 1/2 inch with a 3/4 inch head, so a 3/4 inch socket or wrench tightens it. One bolt means the clamp draws both grooves together at a single point, which keeps installation quick on overhead taps.

Plan for a body measuring 2-1/4 x 2 x 2 inches, plus wrench swing for the 3/4 inch bolt head. That footprint matters in a crowded pedestal, meter socket, or ground bar enclosure where a bolted clamp has to sit without contacting other live parts.

A bolted parallel groove clamp like the PAA12-B1-5 is mechanical, so it can be installed with hand tools and taken apart later if the tap has to be moved or tested. A compression connector needs a die and press tool and is permanent. Choose the bolted clamp where you want a reworkable tap or have no crimp tool on site; choose compression where the connection is buried, encased, or must not be disturbed.

No. It is a two-conductor clamp, one wire per groove. For a third run you need a second clamp on the main, or a multi-tap connector rated for the number of conductors you are landing.

It is sold each, one clamp per unit, so order the exact count of taps you need for the job. The clamp ships assembled with its one bolt, and no insulating cover or boot is included.

There is no insulation on the PAA12-B1-5, it is a bare aluminum body. For grounding and bonding taps that is normal and no cover is needed. If the connection is on an energized conductor in a location requiring covered parts, add a separate insulating cover or tape build-up per your installation requirements.