Metallics SCR0150 1-1/2 Rigid Strut Clamp EG

That is exactly what it is for. The SCR0150 is a 1-1/2 inch rigid conduit strut clamp, sized to the trade size of rigid metal conduit rather than to its actual outside diameter. Use it where you are running 1-1/2 inch rigid and want the run carried on strut channel instead of clamped straight to structure.

EG is electro-galvanized zinc plating. It is a light-duty corrosion finish suited to dry indoor work, mechanical rooms, and covered areas. For outdoor, damp, or corrosive locations, specify a hot-dip galvanized or stainless strut clamp instead of the electro-galvanized version.

It depends on what the conduit lands on. A strut clamp like the SCR0150 is made to bolt into the slot of strut channel, so it is the right choice when you have a racked or trapeze support system carrying multiple runs. If you are fastening a single run directly to a wall, deck, or block, a one-hole or two-hole rigid conduit strap is the simpler part. Strut clamps let you slide and space runs along the channel and re-position later, which straps will not do.

Order your channel hardware separately. The SCR0150 is supplied as the 1-1/2 inch rigid conduit clamp itself; on a strut job you also need the spring nut or channel nut and bolt sized to your strut, plus the channel and any brackets. Count one clamp per support point when you are figuring quantities for a run.

It works well for that where the runs are 1-1/2 inch rigid on strut. Keeping one clamp part number per trade size across a building makes MRO stocking and re-work simple, and the electro-galvanized finish is appropriate for interior mechanical and electrical rooms. For exterior or wash-down areas in the same facility, plan on a heavier corrosion finish rather than using the EG clamp throughout.