50 amp fiver - 30 amp service

TT_Tim wrote:

john&bet wrote:
I may be mistaking, but according to the NEC any two circuits using the same neutral the circuit breakers must be tied together. This is so if one trips all power is removed from the circuit. I believe our rv's are a branch circuit from the pedestal/main panel. Just because they make them for sale does not make it the right way to do it. JMHO.

No. For single split phase 240V (120 across each line to neutral) the neutral can be shared and it can feed two separate circuits. If the 2 individual 120v lines - (240v & neutral) feed a single appliance such as an electric range, the CBs must be tied together.
This does not apply anyway, as there are no 240v appliances in RVs.

I stand by what I said. I wired houses to code and a lot of industrial wiring too. But I retired from it 6 years ago so thinks may have changed, but I doubt it. JMHO.

Water-Bug wrote:


The statement that there are NO 240V appliances in RVs is an assumption. .

OK I will go out on a limb and guess here that in 99.732% of all RVs there are no 240 v appliances.
bumpy

TT_Tim wrote:

john&bet wrote:
I may be mistaking, but according to the NEC any two circuits using the same neutral the circuit breakers must be tied together. This is so if one trips all power is removed from the circuit. I believe our rv's are a branch circuit from the pedestal/main panel. Just because they make them for sale does not make it the right way to do it. JMHO.

No. For single split phase 240V (120 across each line to neutral) the neutral can be shared and it can feed two separate circuits. If the 2 individual 120v lines - (240v & neutral) feed a single appliance such as an electric range, the CBs must be tied together.
This does not apply anyway, as there are no 240v appliances in RVs.

The statement that there are NO 240V appliances in RVs is an assumption. The fact that both legs of the breaker/breakers of a 50 amp circuit on a RV pedistal are tied to trip together, emphasises the fact that it is the safe/proper way to do things. People circumvent codes and laws all the time to suit themselves, so nothing said here is going to change things. People will continue to do what suites them and their NEEDS.

john&bet wrote:
I may be mistaking, but according to the NEC any two circuits using the same neutral the circuit breakers must be tied together. This is so if one trips all power is removed from the circuit. I believe our rv's are a branch circuit from the pedestal/main panel. Just because they make them for sale does not make it the right way to do it. JMHO.

X2

john&bet wrote:
I may be mistaking, but according to the NEC any two circuits using the same neutral the circuit breakers must be tied together. This is so if one trips all power is removed from the circuit. I believe our rv's are a branch circuit from the pedestal/main panel. Just because they make them for sale does not make it the right way to do it. JMHO.

No. For single split phase 240V (120 across each line to neutral) the neutral can be shared and it can feed two separate circuits. If the 2 individual 120v lines - (240v & neutral) feed a single appliance such as an electric range, the CBs must be tied together.
This does not apply anyway, as there are no 240v appliances in RVs.

I may be mistaking, but according to the NEC any two circuits using the same neutral the circuit breakers must be tied together. This is so if one trips all power is removed from the circuit. I believe our rv's are a branch circuit from the pedestal/main panel. Just because they make them for sale does not make it the right way to do it. JMHO.

If you do a search, there are LOTS of places you can purchase this adapter. I have seen approval on a lot worse designs (such as press on wire connectors). The concept of the Camco Power Maximizer is good and I don't see a problem with it. As long as the electrical wiring to and at the pedestal is to code, it shouldn't be an issue.
As stated before, the problem is when someone tries to turn on too many items at once and they continually go out and reset the circuit breaker. That can happen no matter what plug and/or adapters for whatever size RV it is.

Water-Bug wrote:
Local code enforcement would love it too.

do household "codes" apply to the use of extension cords? When I ran an electric cord to my dock, instead of hard wiring it, and opening up the need for permits/codes/etc. I just made it a long extension cord.
bumpy

drfife wrote:
http://www.camco.net/Products/Item?prodID=10768#.VIz-QXtPQzI

Get up to 45 amps combined power. When connecting to your RV’s 50 Amp power cord, don’t be limited to just 15 or 30 amps. Camco’s Power Grip™ Power Maximizer draws the combined power from a 15- and a 30-amp outlet, which allows your RV to receive up to 45 amps. Will not work when plugged into GFI-type outlets. Patented. This is a polarized adapter designed solely for recreational vehicles and is not for use with any other adapter or device. Adapter must be used in conjunction with properly sized circuit breakers.

Bet you won't find an UL (Underwriters Labratories) or Good Housekeeping stamp of approval on this one. Local code enforcement would love it too.