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References
1.
British Standard BS 5345 Selection, installation and maintenance of electrical apparatus for use in potentially explosive atmospheres . Part 4 – Installation and maintenance requirements for electrical apparatus with type of protection ‘i’ – Intrinsically safe electrical apparatus and systems .
2.
Regulations for Electrical Installations Institution of Electrical Engineers − 15th edition .
3.
British Standard BS 5345 Selection, installation and maintenance of electrical apparatus for use in potentially explosive atmospheres . Part 1 – Basic requirements for all parts of the code .