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Old 11-06-2015, 12:05 PM   #1
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50 Amp Service

I have a 2008 Monaco Monarch, when connected to 50 amp power the service board shows 50amp available but doesnt show what I am actually using its blank. When I use pig tail and change to 30 amp it shows exactly what I am using. Is that normal ?

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Old 11-06-2015, 12:14 PM   #2
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If it is like mine, that is the way it is supposed to work on 50 amps.

Nathan and Linda, 2000 Winnebago Chieftain 35U, F53 Chassis, Banks Power Pack
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Old 11-06-2015, 01:08 PM   #3
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Working as designed.. When you are on 50 amp the odds of you tripping the park breaker are very low.. Assuming nothing wrong with the park breaker.. in fact my rig maxes at about 30 amps per leg (if that) so no way will I hit 50 amps.

But when on 30 amps.. Well see "30 amps per leg".

So they monitor current on the NEUTRAL line.

One 50 amps, If I'm actually drawing FULL POWER (50 amps off each leg) the current in the neutral is precisely ZERO and thus meaningless.

I can demonstrate this with water but alas, Easier to do it live.
Home is where I park it!
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Old 11-06-2015, 01:15 PM   #4
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Yes, that's normal. Had me buggy for a long time til I learned.
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Old 11-06-2015, 01:50 PM   #5
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Amps in was useful when I only had a 20 extension cord this week when we had to move from floods in east texas. I now know coffee pot used 12, microwave 18, aquhot accidently left on 110 is 19 until shut off. Charging system only about 3. Sure like the all led lighting We did power management and lasted 48 hours on 20 amp breaker and did not blow it.

Never noticed when the res refer was on but it made ice so life was goodder.

It does tell me amp input when on 50 amps and with tvs computers sat and lights it is at 1 amp in right now
Sheri & Don 2003 Dynasty 42" regal ISL 400
2007 Goldwing Trike Gmc 4X4 w/ autoloader for trike
Lets go we got it all loaded.
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Old 11-07-2015, 07:00 AM   #6
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Yes but if you plug into a 20 or 30 amp outlet with an adapter. then the AMPS display on the panel works. It may also work on Generator (optioanl depending on programmer)

Again here is why

This is 50 amps

Hot 1----------
Neutral ()-----
Hot 2----------
The () is the current sensor (A wire wound torrorid ring around the neutral conductor
Voltage HOT (1 or 2) to Neutral is 120 HOT to HOT is 240

Assuming both A/C's are cranking out cool
Current flows from one hot leg to the other, Neutral sits there..

(This is why they use 240 volts by the way, You get much less voltage drop due to the fact that basically every amp common to both legs is used twice).

Now go to an adapter Same diagram but

Voltage Hot to neutral (either leg) is 120
Voltage Hot to Hot is ...Zero

Now ALL current, no matter if it's coming in via Hot 1 or Hot 2 flows through the neutral

In many cases this also applies to the generator (Mine does that)

So now the Amps reading is meaningful.

Home is where I park it!
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