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I have a metal Wylex CU (circa 1985) and it has BS 5486 stamped on it. Is this the BS number for the CU or the main/isolation switch?
BS number for main switch
- Thread starter DIYchallenged
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- Joined
- 3 Feb 2005
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- 11
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It's stamped on the cover just under the main switch
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BS5419
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