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nVent ERICO Hammerlock Ground Clamp


The nVent ERICO Hammerlock irreversible mechanical connection connects the grounding conductor to the ground rod. Machined from highly conductive copper, the state-of-the-art nVent ERICO Hammerlock provides a low resistance connection designed to withstand ground fault currents and lightning transients. The connector’s mechanically rugged design will help ensure that the highest level of performance is maintained for many years after the connection has been buried in the harsh underground environment.

Installing the nVent ERICO Hammerlock is as easy as swinging a hammer and requires no special tools or training. The nVent ERICO Hammerlock can be installed three to five times faster than an acorn clamp and provides a high-quality grounding connection that is easy to use and withstands 100% of the current carrying capacity of the conductor.


  • Irreversible connection with excellent mechanical strength
  • Fast and simple installation requires only a hammer
  • No special training required
  • Low resistance connection
  • Provides a visual indication of completed connection
  • Allows for “T” or pass-through connections


Part Number EHL58C1K
Ground Rod Type Copper-bonded
Material Copper
Ground Rod Diameter, Nominal 5/8"
Ground Rod Diameter, Actual (Ø) 0.56"
Conductor Size #6 Solid - #4 Solid
16 mm² Stranded
Number of Conductors 1
Certifications cULus
Standard Packaging Quantity 25 pc
UPC 78285646858
EAN-13 8711893040524

nVent, nVent CADDY, nVent ERICO, nVent ERIFLEX, and nVent LENTON are owned by nVent or its global affiliates. All other trademarks are the property of their respective owners. nVent reserves the right to change specifications without prior notice.

UL, UR, cUL, cUR, cULus and cURus are registered certification marks of UL LLC.