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When was aluminum wiring banned in mobile homes?
Saturday, April 18, 2020
Aluminum wiring has not been used in mobile homes since the early 1970s, and has been banned by HUD since the beginning of HUD jurisdiction over mobile home construction in 1976. “Aluminum conductors, aluminum alloy conductors, and aluminum core conductors such as copper clad aluminum are not acceptable for use in the branch circuit wiring in manufactured homes,” according to the HUD-code 24 CFR 3280.801(e). Older, pre-1976 mobile homes may have the type of aluminum wiring that was later banned, as shown below in an electrical panel.
But a newer type of aluminum wiring is allowed by the National Electrical Code [NEC 310.1069B)] for site-built and modular homes, and also for the service cables that run to the interior panel of mobile home. The approved type of aluminum wiring is a different alloy than the earlier wiring and is multi-strand (not solid).
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