I have an EBM thermally protected axial fan that runs at 115v 60hz. Could i hook this up to a standard US 120v wall socket with no elevated risk of fire during continuous use?

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Yes, how else can you run it? That's what it is made to do.

Dear Sir / Ms,

I am currently working on a project and need some information on an issue which I am facing.

I have 2 smoke extract fans connected in series. At any one time, only one fan is in operation while the other

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If the fans are rated around 1" WC I would not be concerned. Once either secondary fan is up to speed it will not cause much loss, but without a reference to a test, I cannot predict what that loss would be. I do not know if AMCA would have anything

heat loss through inverters and other thing is 5 kw & temp. rise in panel is around 10 deg.c
i want to calculate the air flow required and the static pressure to select the fan.can anybody help me?

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See:
http://www.hoffmanonline.com/product_cat alog/tech_resources.aspx?cat_1=34&ca t_2=137&SelectCatID=137&CatId=13 7

about half way down the page under thermal management