Common use of GROUND MAT Clause in Contracts

GROUND MAT. ➢ The ground mat will be installed to provide proper grounding for all electrical equipment, steel structures, and fence. ➢ The ground mat is comprised of bare 4/0 copper interior to the switchyard, and bare 1/0 copper as a perimeter ground around the outside of the fence. ➢ All equipment is bonded to the internal ground mat with 4/0 copper. ➢ All steel structures are bonded to the internal ground mat with a loop of 1/0 copper ➢ The chain link fence including the barbwire is bonded at every fourth fence post to the external perimeter ground mat with 1/0 copper. ➢ Ground rods will be installed as needed to bring the ground mat resistance to 1 ohm or less. ➢ All airbreak switches will have a grounded switching platform for operator protection placed under the switch control mechanism. ➢ NorthWestern Energy will procure, install, and own the ground mat.

GROUND MAT. ➢  The ground mat will be installed to provide proper grounding for all electrical equipment, steel structures, and fence. ➢  The ground mat is comprised of bare 4/0 copper interior to the switchyard, and bare 1/0 copper as a perimeter ground around the outside of the fence. ➢  All equipment is bonded to the internal ground mat with 4/0 copper. ➢  All steel structures are bonded to the internal ground mat with a loop of 1/0 copper ➢  The chain link fence including the barbwire is bonded at every fourth fence post to the external perimeter ground mat with 1/0 copper. ➢  Ground rods will be installed as needed to bring the ground mat resistance to 1 ohm or less. ➢  All airbreak switches will have a grounded switching platform for operator protection placed under the switch control mechanism. ➢  NorthWestern Energy will procure, install, and own the ground mat.