5.3 Bolted Electrical Connections
Where bolted connections are made between surfaces, the metal surfaces shall be
thoroughly cleaned. Coating of the metal surfaces and materials to be used shall be
based on manufacturer method and recommendations.
The tightness of each bolt shall be checked during installation and connection of the
equipment.
Bolted electrical connections shall be tightened with manual torque wrenches. Torque
wrenches shall be constructed so that they will visually or audibly indicate when the
proper torque is reached. The accuracy of the torque wrench shall be checked by a
testing laboratory and sticker and certificates shall be provided before usage. The
torque wrench shall be calibrated every 1 year.