13amps

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hi guys, ive recently cleared a few rack mounted server cabinets out and have got quite a few 10 way extension leads, most of them say 13amps max load, how much is that? (Say computers, 480w psu, crt monitor, how many could i plug in?)
 
Voltage multiplied by current gives you the wattage they can handle. So 240v x 13amp = 3120w. So over 3000w, 4-5 computers on the one extension lead (to be safe, then again the fuse would only blow anyway).
 
Remember:

1) Switch mode PSUs are not resistive loads, so there is pf to be considered as well
2) just because a computer has a 480w PSU, doesn't mean it actually takes 480w
3) Earth leakage from computers is significant, a rack of a decent size shouldn't be connected by a power strip connected via a BS1363 plug, a proper PDU ought to be used and connected via an industrial plug and socket, and the earthing upto that socket should be high integrity, see section 607 of BS7671 for more information
 
hmm it says its a power distributions unit, and its got a metal case, but no ground. i just plugged it in to my normal house socket.
 
cyborg said:
Voltage multiplied by current gives you the wattage they can handle. So 240v x 13amp = 3120w. So over 3000w, 4-5 computers on the one extension lead (to be safe, then again the fuse would only blow anyway).

UK voltage is now 230V (-6% +10%)

So: 230v x 13A = 2990W or 2.99kW

/Pedantic
 
M0t0r0la said:
UK voltage is now 230V (-6% +10%)

So: 230v x 13A = 2990W or 2.99kW

/Pedantic
funny that, i just tested mine yesterday with a multimeter and it was 240v
 
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