Published: 8 July 2014
Category: Q&A
Colin asks this question, which concerns containment earthing and any necessity for it with extra low voltage (ELV) cabling. It has been answered by SELECT (Theme – Fire, Safety and Security):
This Q & A is one of thousands posted in our Technical Expertise area, and answered on a daily basis by our Voltimum Experts.
Question: Should metal containment used for ELV cabling only i.e. (for fire alarm cabling) be earthed?
Answer: This depends whether or not the containment you refer to is an extraneous conductive part (i.e. likely to introduce a potential).
If in doubt, the best practice would be to earth it.
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