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Panel/Switchgear Yellow Electricity Warning Labels

Former Community Member
Former Community Member
Guys,


I am trying to find the specific standard that states what voltage value is to be placed on the yellow colored electricity warning labels found on panels/switchgear. As I understand it the electricity warning sign template is coming from ISO 7010. However having read ISO 7010 I can see it makes no reference to what voltage value should appear on the warning label.


Is it the nominal voltage, is it peak voltage, is it rated operational voltage ? 


What standard is specifying this ?


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    BS 7671 regulation 514.10.1 seems to be phrased all in terms of nominal voltages, so I would expect notices in compliance of that regulation at least to show nominal. Note that it's unusual to actually need such a notice from a BS 7671 point of view these days - since the requirement only applies where the voltage exceeds 230V nominal to earth - thus nothing is needed for either single phase 230V nominal systems (despite possibly up to 253V being present), or normal three-phase 230/400V systems despite the nominal 400V between lines.

      - Andy.
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  • 0
    BS 7671 regulation 514.10.1 seems to be phrased all in terms of nominal voltages, so I would expect notices in compliance of that regulation at least to show nominal. Note that it's unusual to actually need such a notice from a BS 7671 point of view these days - since the requirement only applies where the voltage exceeds 230V nominal to earth - thus nothing is needed for either single phase 230V nominal systems (despite possibly up to 253V being present), or normal three-phase 230/400V systems despite the nominal 400V between lines.

      - Andy.
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