|
1 members (ale348),
302
guests, and
14
robots. |
Key:
Admin,
Global Mod,
Mod
|
|
|
Joined: Aug 2001
Posts: 545
OP
Member
|
I looked at a large Motor Home a customer wants power to. It has a 6-3 w/grd 50a 240v cord on it. I checked the continuity from neutral to ground and no connection. He said he plugs it in to a camp ground with a 3 prong adaptor and it works (2 prong with ground). How would this work if there is no connection to neutral at the motor home panel. And the adaptor has no connection between nuetral to ground on the plug itself. Is there something different about how a motor home is wired?
The Golden Rule - "The man with the gold makes the rule"
|
|
|
|
Joined: Sep 2002
Posts: 943 Likes: 2
Member
|
The neutral and ground are isolated in the panel.
|
|
|
|
Joined: Aug 2001
Posts: 545
OP
Member
|
But then why would it work when he plugged it in at the camp park? Theoreticly there would be no connection for the neutral.
The Golden Rule - "The man with the gold makes the rule"
|
|
|
|
Joined: Apr 2002
Posts: 558
Member
|
The 3-wire to 4- wire adapter plugs into a 125 volt 3-wire receptacle. It connects L1 and L2 of the motor home together so all 120 volt electrical items will function but you will be limited on how many items that can be used at the same time.
Curt
Curt Swartz
|
|
|
|
Joined: Aug 2001
Posts: 545
OP
Member
|
Then how would his 240v A/C work? Something doesn't make sense.
The Golden Rule - "The man with the gold makes the rule"
|
|
|
|
Joined: Sep 2002
Posts: 943 Likes: 2
Member
|
There are no 240V loads in the motorhome* the adapter jumpers both hots so it can be used for 30A 120V service.
* At least in any that I have seen.
|
|
|
|
Joined: Aug 2001
Posts: 545
OP
Member
|
Yes, that makes sense, I do remember campers being about the only 120v 30a service. The customer said it was 240v, but that is wrong.
The Golden Rule - "The man with the gold makes the rule"
|
|
|
|
Joined: Aug 2001
Posts: 545
OP
Member
|
Another thought: The motor home has a 4 prong 240v 50a cord & plug. Without the adaptor, someone could could plug that into a 240v outlet and smoke the MH.
The Golden Rule - "The man with the gold makes the rule"
|
|
|
|
Joined: Dec 2003
Posts: 886
Member
|
Why would that be a problem? Isn't there 2 hots, neutral and ground at the plug?
-Hal
|
|
|
|
Joined: Aug 2001
Posts: 545
OP
Member
|
hbiss, No there isn't, as I said early there is an adaptor changing it to a 3 prong.
The Golden Rule - "The man with the gold makes the rule"
|
|
|
Posts: 28
Joined: February 2011
|
|
|
|
|