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07-19-2023, 01:37 PM
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#15
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Senior Member
Join Date: Jul 2018
Posts: 5,326
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Quote:
Originally Posted by twinboat
Everyone says over fusing shouldn't be done but everybody plugs a 2 amp TV into a 15 amp outlet.
Can your TV power cord handle 15 amps, not likely.
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And it's wise to remember that the purpose of the circuit breaker is to protect the WIRING TO THE OUTLET (and the outlet itself), but not the load that is plugged into the outlet.
__________________
2005 Four Winds Majestic 23A
“To the world you may be one person; but to one person you may be the world.” - Dr Suess
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07-19-2023, 02:30 PM
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#16
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Senior Member
Join Date: Feb 2022
Location: Elburn illinois
Posts: 175
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Quote:
Originally Posted by twinboat
Everyone says over fusing shouldn't be done but everybody plugs a 2 amp TV into a 15 amp outlet.
Can your TV power cord handle 15 amps, not likely.
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The National electric Code address this at the 6 foot tap rule. Appliance cords under 6 feet can use down sized wire. The RV cords exceed 6 feet and everything down stream needs to be sized and protected accordingly. You also have the transfer switch and wiring before the 50 amp main breaker inside the RV to take into account and fuse protect at 50 amp with the house breaker.
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07-19-2023, 02:53 PM
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#17
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Senior Member
Join Date: May 2018
Posts: 4,029
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Quote:
Originally Posted by daveh5525
The National electric Code address this at the 6 foot tap rule. Appliance cords under 6 feet can use down sized wire. The RV cords exceed 6 feet and everything down stream needs to be sized and protected accordingly. You also have the transfer switch and wiring before the 50 amp main breaker inside the RV to take into account and fuse protect at 50 amp with the house breaker.
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I disagree. NEC does not address power cords at all, that would be a listing agency's job.
Also NEC tap rules apply to taps in building wiring (not cords) of 3 different lengths: not over 10 feet, not over 25 feet and over 25 feet, never saw any mention of a six foot tap rule. There are several six foot rules in the NEC but none refer to taps, they refer to grounding in LFMC, unsecured fixture whips and proximity to plumbing fixtures. If you know of something I missed in my decades of code research and use please put up a link.
If what you say were true we would not have any extension cords over six feet that were not 14 or 12 AWG.
__________________
Brian, 2011 Winnebago Via Class A on Sprinter Chassis
2000 Jeep TJ toad
Tucson, AZ
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07-19-2023, 03:05 PM
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#18
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Senior Member
Join Date: Feb 2022
Location: Elburn illinois
Posts: 175
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Quote:
Originally Posted by bigb56
I disagree. NEC does not address power cords at all, that would be a listing agency's job.
Also NEC tap rules apply to taps in building wiring (not cords) of 3 different lengths: not over 10 feet, not over 25 feet and over 25 feet, never saw any mention of a six foot tap rule. There are several six foot rules in the NEC but none refer to taps, they refer to grounding in LFMC, unsecured fixture whips and proximity to plumbing fixtures. If you know of something I missed in my decades of code research and use please put up a link.
If what you say were true we would not have any extension cords over six feet that were not 14 or 12 AWG.
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See below.
https://acrobat.adobe.com/link/revie...1-28e8b0d54c40
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07-19-2023, 03:21 PM
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#19
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Senior Member
Join Date: May 2018
Posts: 4,029
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Quote:
Originally Posted by daveh5525
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Yes I am very familiar with that code section but it has nothing to do with factory made cords nor does it mention any six foot rule, it's about building wiring. NEC jurisdiction stops at the wall receptacle or equipment termination.
__________________
Brian, 2011 Winnebago Via Class A on Sprinter Chassis
2000 Jeep TJ toad
Tucson, AZ
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07-19-2023, 07:13 PM
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#20
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Senior Member
Join Date: Jul 2018
Posts: 5,326
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Quote:
Originally Posted by daveh5525
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Brian is correct, the NEC does not apply after the receptacle, that's on UL or other listing agency.
The context of the word "tap" is important here. It applies to feed conductors and other conductors that are not overcurrent-protected (at conductor rating) for the service.
__________________
2005 Four Winds Majestic 23A
“To the world you may be one person; but to one person you may be the world.” - Dr Suess
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07-21-2023, 01:18 PM
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#21
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Senior Member
Join Date: Jun 2012
Location: Morada/Stockton CA
Posts: 178
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Closing the loop
Just to close this out, my electrician came by today and wired up the outlet. It is amazing to have 50A service for the coach after all these years, and for almost no cost ($180).
Mike
__________________
2016 Tiffin Allegro Bus 45UP
..and a bunch of dogs
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07-21-2023, 01:36 PM
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#22
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Senior Member
Join Date: May 2018
Posts: 4,029
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Quote:
Originally Posted by cmccallum
Just to close this out, my electrician came by today and wired up the outlet. It is amazing to have 50A service for the coach after all these years, and for almost no cost ($180).
Mike
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Did he really mount it upside down or is the picture upside down?
__________________
Brian, 2011 Winnebago Via Class A on Sprinter Chassis
2000 Jeep TJ toad
Tucson, AZ
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07-21-2023, 01:42 PM
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#23
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Senior Member
Join Date: Jun 2012
Location: Morada/Stockton CA
Posts: 178
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Yes it’s upside down. I will overcome my fear of electricity and rotate it 180 degrees. One dollar per degree.
Mike
Quote:
Originally Posted by bigb56
Did he really mount it upside down or is the picture upside down?
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__________________
2016 Tiffin Allegro Bus 45UP
..and a bunch of dogs
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07-21-2023, 01:44 PM
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#24
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Senior Member
Join Date: May 2018
Posts: 4,029
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Quote:
Originally Posted by cmccallum
Yes it’s upside down. I will overcome my fear of electricity and rotate it 180 degrees. One dollar per degree.
Mike
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Turn off the power, rotate it and compress the wires back into the box, then pull it back out far enough to check all the screws for tightness. When you rotate a device with big fat wires they sometimes loosen in their terminals.
__________________
Brian, 2011 Winnebago Via Class A on Sprinter Chassis
2000 Jeep TJ toad
Tucson, AZ
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07-21-2023, 02:07 PM
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#25
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Senior Member
Join Date: Jun 2012
Location: Morada/Stockton CA
Posts: 178
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Thanks. I was able to do this without too much trouble.
Mike
__________________
2016 Tiffin Allegro Bus 45UP
..and a bunch of dogs
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07-23-2023, 04:13 PM
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#26
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Senior Member
Join Date: Mar 2018
Location: Cocoa FL
Posts: 291
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I am headed to Sturgis rally in a few days but DW hates loud noise, bikes and drinking so I can’t take the coach because we are on the road in Michigan now.
I am renting a 5th wheel and a buddy is bringing up his portable generator but the 50A connection on the generator looks like the welder set-up instead of RV set-up. He has a 50A cord that fits the generator and has 50A RV on the other end.
Does this look legit?
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07-24-2023, 08:28 AM
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#27
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Senior Member
Join Date: May 2018
Posts: 4,029
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If the adapter is wired correctly and the generator or adapter is neutral/ground bonded that could work. Check with a meter from each hot leg to neutral and you should see approx 120 volts. Next do the same from each hot to ground, again you should see approx 120 volts. If either test fails don't use it till corrected.
Basically the 3 wire connection on the generator is the same as the 3 wire service on your house where neutral and ground are one in the same, as long as it is bonded.
(I see what looks like some pretty big threaded RMC on that pallet, is somebody a commercial electrician?)
__________________
Brian, 2011 Winnebago Via Class A on Sprinter Chassis
2000 Jeep TJ toad
Tucson, AZ
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07-24-2023, 10:13 AM
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#28
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Senior Member
Join Date: Mar 2018
Location: Cocoa FL
Posts: 291
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Thanks for the guidance. My buddy owns a metal and engineered plastics fabrication shop in Houston. He bought several generators to supply power to some services in the event of hurricane damage. We will put a meter to the connector before plugging into the 5th wheel.
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