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14 Whenever you have wiring passing through a firewall, bulkhead, or other steel panel, you have to protect the wiring from shorting to the panel by using a grommet or bushing. A rubber grommet or plastic bushing is easily popped into a drilled hole, allowing the wiring to pass through safely. Don’t rely on the wiring casing or some electrical tape to protect the wiring alone. View Related Article
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