What is the minimum thickness of a plate of bushing used to protect a wire?

The minimum thickness of a plate of bushing used to protect a wire is specified as 1/16". This thickness is established to provide adequate protection for the wire insulation from potential abrasion or damage, especially when wires pass through panels or other surfaces that may have sharp edges. Using a bushing with this specific minimum thickness helps to ensure compliance with safety standards and code requirements, reducing the risk of electrical faults due to wire wear or exposure.

In contrast, options such as 1/32", 1/8", and 1/4" may not effectively provide the balance of strength and flexibility needed for typical applications, either being too thin to provide sufficient protection or exceeding the minimum requirements unnecessarily. Therefore, the choice of 1/16" represents a sound practice in electrical installations, effectively safeguarding the wire without over-engineering the protective measure.