Our Voltimum Experts answer your questions on a daily basis in our Technical Expertise area. This Question of the Day, concerning cabling and connecting impulse and extract fans for an underground car park, is answered by the ECA:
I've been asked only to do the dead test on the fan circuits. Is this OK? What forms could I issue if any for this? With the system being fed by the main control panel, is testing of the fans necessary? I would think so.
Answer: You should ask for the installation certification and test results for the sub-main to the control panel as your design information. If you are then installing final circuits to extract fans, these should be tested in accordance with BS 7671:2008, and upon completion you should issue a BS7671 Installation Certificate for circuits you have installed from the control panel (which should be treated as a distribution board).
Also, the fans should have a functional test to ensure that they are working as expected, and certified in accordance with Part F of the Building Regulations.
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