Posted by John T on November 14, 2014 at 06:59:02 from (216.249.72.121):
In Reply to: electric question posted by vscummins on November 13, 2014 at 20:22:50:
1) First off this is a pure resistive (NON inductive) heating element meaning it has a UNITY ONE POWER FACTOR.
2) Since its a pure resistive heating element only, not a motor or a particularly voltage sensitive or particularly voltage critical device, voltage drop in the extension cord and resulting voltage at its input isn't as critical as if it were a motor or other voltage sensitive or voltage critical device.
3) Voltage drop on particular sizes of conductors for X amps at X feet is easy to look up and the other fine gents have already provided that.
THAT BEING SAID if it were me personally I still wouldn't use less then a 12 Gauge extension cord, although sure, a smaller gauge may still "work" fine. Its your money and your choice. As far as supplying an outdoor receptacle (into which that heater may be plugged into) I always specified GFCI receptacles. Livestock are very sensitive to even a slight voltage tingle and will get nervous or even refuse to drink if they ever feel a shock, therefore you may have to take a look at ways to prevent such in the event it were to happen, but hey, Ive used a lot of those water heaters AND NEVER HAD A PROBLEM although another person may report he did. NO WARRANTY
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