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murreywalker 06-27-2012 07:29 AM

Tech Support Wouldn't/Couldn't Answer My Electrical Question
 
When it comes to electrical questions, I'm all thumbs and rank as an idiot first class.

My suspicions are, that I maxed out the power capability. My call to AS tech support was very unproductive; to the extent that I sensed someone at the other end of the conversation was kind of dancing on the head of a pin.

The Situation:
We were camped in an AR state park (shore power hookup) with wiring less than ten years old. It was hot outside; 95 or better. We were in 90% shade and the AC was doing a great job. The wife was cooking dinner in the microwave @ 50% power.

To finish her meal, she kicked the microwave on to full power. Within a couple of minutes, the AS lost power. A minute later, the power came back on, and she turned the micro back on and the same thing happened again.

The Question:
Is the AS Power Center under engineered? Should I press for a better answer/more warranty support?

dkottum 06-27-2012 07:41 AM

Pretty simple answer. The 30 amp service of your Airstream, and many other travel trailers cannot support A/C and convection microwave at the same time. This is especially true if your campground supply voltage was low due to heavy A/C use at the time, lower voltage means increased current load; that's a sure way for things to shut down.

doug k

vswingfield 06-27-2012 07:51 AM

My 1983 Excella has a switch in the bottom of the cabinet over the stove/sink. One way you get AC, the other you get the microwave. No chance of running the two simultaneously. As doug k said, they aren't meant to run at the same time on 30 amps.

I'm surprised that it worked on 50% power. On the microwaves I've had, 50% power really meant 100% power switched on an off; on 50% of the run time.

On another topic, where are you staying? Hope you're having a good time. :)

purman 06-27-2012 07:53 AM

What were you hooked up to, 30 or 50 amp, Sounds like it might have been a camp ground power issue. IF the camp ground was full there might have been a bunch of people sucking power.

xrvr 06-27-2012 08:10 AM

I do that all the time, looks like a campground power issue. What kind of volts were getting from the pedestal outside? Jim

Rbphoto 06-27-2012 08:30 AM

We had the same issue. Switched the plug in to a 50AMP circuit and it solved the problem.

SilverRanger 06-27-2012 08:39 AM

1 Attachment(s)
I've found this to be very helpful to test voltage at a campground before I hook up.

Digital Monitor - RV Supplies, RV Accessories & RV Parts for Motorhomes, Campers, Travel Trailers & 5th Wheel Campers - fifth wheel camper - Discount RV Parts Direct

murreywalker 06-27-2012 08:51 AM

Quote:

Originally Posted by zigzagguzzi (Post 1166378)
I do that all the time, looks like a campground power issue. What kind of volts were getting from the pedestal outside? Jim

I really don't know what kind of voltage I was getting, but the campground is pretty new (within 10 years).

Next time I'll check as this is one of our favorites (Devil's Den State Park).

murreywalker 06-27-2012 08:52 AM

Quote:

Originally Posted by Rbphoto (Post 1166391)
We had the same issue. Switched the plug in to a 50AMP circuit and it solved the problem.

Interesting. There was 50 amp service, and I didn't think about it.

Thanks.

murreywalker 06-27-2012 08:53 AM

Quote:

Originally Posted by SilverRanger (Post 1166398)

Looks like something I need for the challenging days of summer.

murreywalker 06-27-2012 08:57 AM

Quote:

Originally Posted by vswingfield (Post 1166369)
My 1983 Excella has a switch in the bottom of the cabinet over the stove/sink. One way you get AC, the other you get the microwave. No chance of running the two simultaneously. As doug k said, they aren't meant to run at the same time on 30 amps.

I'm surprised that it worked on 50% power. On the microwaves I've had, 50% power really meant 100% power switched on an off; on 50% of the run time.

On another topic, where are you staying? Hope you're having a good time. :)

I know this (microwave and AC) is an issue when boondocking. However you would think the campground would anticipate this issue and wire accordingly.

We're no longer staying. We are home, but were camped at Devil's Den. Petit Jean and Lake Catherine are close seconds when it comes to favorites by the way.

Just to let you know. I don't do much in the way of Missouri park camping. Arkansas state parks have my state's parks beat every which way!

mimiandrews 06-27-2012 09:18 AM

It's a load management issue
 
Whether or not the campground has 50 amp service, your Airstream is probably wired for 30 amps. So, 30 amps is all you can use. As others have said, that usually will not run both an air conditioner and a microwave.

The solution is to manage the load. The trailer should stay pretty cool at least during the short time the microwave usually runs. Simply turn the A/C off when using the microwave, then turn it on again when the cooking is finished.

AWCHIEF 06-27-2012 09:23 AM

This past weekend I was camping at Paul B. Johnson State Park, MS. The temps were over 100 degrees. People were blowing circuit breakers all around me. It was just simply overloading the park electrical systems with all the juice being drawn for extended periods of time.

Inland RV Center, In 06-27-2012 09:28 AM

Quote:

Originally Posted by Rbphoto (Post 1166391)
We had the same issue. Switched the plug in to a 50AMP circuit and it solved the problem.

The original city power cable, is "NOT" designed to handle 50 amps.

Andy


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