Application Challenge

A B&D Technologies integrator working at a large paper mill in Savannah, needed a solution for bonding a very large exterior door to a piece of power distribution equipment. Among the challenges, the wire was too thick to fit through openings without major equipment modifications. Space and metal shavings from drilling were a major concern, too.

Ground Straps

Solution

B&D has utilized Erico’s busbar and other power products for the last 12 years. In our testing lab, we used the provided specifications and crafted a flat length of tin-coated copper braid that we had in stock and stored in spools. Cutting the required length, we crimped and punched the ends for connection on either end of the customer’s system.

Opinion

Sometimes we, as designers and engineers, take the easy route and just use round conductors. This is adequate, but flat-braided conductors have many uses:

  • Renewable Energy – Wind turbines and solar applications
  • Electrical enclosures – Grounding and bonding
  • Electrical panel doors or switchgear doors
  • Security fences around substations and utilities
  • Fence and gate jumpers
  • Generators and transformers – robustness for vibration and environmental concerns
  • Power and utility boards
  • Oil, gas and flammable liquid tanks – especially around lids, caps and spigots

Last words

For me, the main reason I use braids is because they provide weight savings, material savings and lower the impedance when compared to cables with insulation. Just one less thing to worry about.

C. Tolbert DOE