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Registered Member #53
Joined: Thu Feb 09 2006, 04:31AM
Location: Ontario, Canada
Posts: 638
Electricians rule of thumb, if its continuous load then its 14awg for 10amps or less, 12awg for 10-20 and 10awg for 20-30 amps. If you stick to that you won't burn down your house.
Registered Member #1497
Joined: Thu May 22 2008, 05:24AM
Location: Toronto, Ontario, Canada
Posts: 801
One thought is that say 14AWG at 10A for electricians usually means 120VAC, how can I extrapolate down to 20V, or is current independent of voltage for resistive heating.....?
Registered Member #162
Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3141
Try two car headlamp filament bulbs in series.
Where I work we use all kinds of filament lamps as loads. They're cheap and give a quick indication. the surge of current at switch-on due to the filament being cold is a good test of a psu. (equivalent to capacitance as a load at switch-on)
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Extrapolation of wire current ratings
