Pulling more than 50 amps ?

wa8yxm wrote:

dougrainer wrote:

I read this again. It is worded POORLY. The answer is, YES, THEY CAN DRAW MORE THAN 50 AMPS. But, the 50 amp pedestal handles a TOTAL of 100 amps. Doug

Which wire has the 100 amps on it Doug?

(And yes I know it's 50 amps used twice not 100 amps )

Now in some cheater parks they do not run both legs. then the Neutral might be seriously overloaded.

WHY run 240 volts divided instead of just 100 amps of 120?

Easy
Imagine there is Two volts drop from your RV to the transformer at full load (50 amps) EACH WAY (A reasonable drop for many RV parks

So 120 volts at the transformer. 118 at the RV right.. Well if it's `120 volt only service the current has to get BACK to the transformer so it's 114 at the RV 2 volts lost each way.

Now let's go to 240 volts divided 50 amps per leg full load

120+120=240 comes out of the center tapped transformer
Two volts is lost in transit each leg
My Surge guard says 118 volts per leg 1/2 the voltage loss.

But it gets even better if it's a cheater park because at full load of 50 amps per leg the return on the cheater park has double the current and thus double the loss (properly wired in the example aboe the neutral is .. neutral (no current). so i'd end up with not 114 but 112.

So splitting it into two legs and phasing them .. Saves on the wire needed

All hail Mr. Ohm and his famous law :)

In any case.. IF you do not have a Progressive Indursties EMS or TRC/Southwire Surge Guard of the kind that monitors and reports voltage on the legs as well as checking for open /reversed other wise bad connecitons.. I strongly recommend.

You are such a pain. AS stated, The POST was poorly worded. So, on 50 amp service you CAN draw more than 50 amps. 50 amps on each leg. But as the post was poorly worded, I posted the CORRECT answer and gave the correct answer on my other posts on this subject.. YOU ARE A JACK OF ALL TRADES AND A MASTER OF NONE. You are what they were thinking of when they made this saying. Doug