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Guide to commercial installations | Part 2 Panelboard: Standards and Regulations
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• It is reasonable in all the circumstances for the person to
be at work on or near it while it is live; and
• Suitable precautions (including where necessary the
provision and use of protective equipment) have been
taken to prevent injury’.
Where isolation is not practical then you need to consider
using a higher degree of form of separation. In general
however, the price of an assembly will be higher for increased
levels of separation.
Choosing an assembly with the highest internal separation
does not necessarily give the most appropriate or cost
effective solution. For general installations, you can usually
specify form 3 panelboards.
You can find more information about forms of internal
separation in the BEAMA guide, which can be downloaded
from
www.beama.org.uk.