7 votes

Main breaker not tripping

Keep in mind the current needed to make the round trip. So .0125 ohms (sounds about right) for one way, then ??? on the return trip, as the neutral may be smaller and the ground is definitely smaller. ...
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6 votes

Wiring single-phase A/C to a 240V 'wild leg'?

Primary issue: there are no 240V straight rated single pole breakers in the QO line Your first problem is that you can't just use a single pole breaker for this job, as all single pole QO(B) breakers ...
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6 votes

Challenger Panel: Are there any issues with the breakers we are using?

Someone just whacked in what they had on the truck This sort of alien invasion is a sign that someone, either the original installer or someone who was doing things in the panel, just grabbed whatever ...
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5 votes
Accepted

Challenger Panel: Are there any issues with the breakers we are using?

Eaton BR/C. Your panel labeling indicates Challenger Type C breakers (or possibly Type A). Those have been continuously made, by Challenger then Bryant then by Eaton's Cutler-Hammer brand. The key is,...
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4 votes

Safe breakout for an RV outlet

You can get "a solution in a can". It is called an "RV subpanel" and it replaces the 30A socket. It contains a 30A breaker for a TT30 socket, as well as a 15A or 20A breaker to ...
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3 votes

Challenger Panel: Are there any issues with the breakers we are using?

So let's take these in order Crouse-Hinds - OK Challenger - Replace this Crouse-Hinds - OK Crouse-Hinds - OK Probably a Murray (Siemens) - OK Unknown (maybe a Siemens?) - If it doesn't say Challenger ...
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  • 19.7k
3 votes
Accepted

Safe breakout for an RV outlet

You need a portable subpanel, or "power distribution box" though this one will be unusual (most of those "off-the shelf" are designed for NEMA14-class 4-wire input. There might be ...
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  • 132k
3 votes

GFCI Circuit Breaker won't reset after construction

Instead of jumping to the conclusion that an expensive safety device is faulty and replacing it, look at the wiring itself. Somewhere, likely near where the concrete was broken up, there are loose or ...
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  • 29.1k
2 votes

GFCI Circuit Breaker won't reset after construction

Disconnect parts of the circuit. If power gets from the GFCI breaker to the first device with all other devices disconnected, the fault is not in that piece of (cable, or conduit and wires,) Then ...
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  • 132k
2 votes

Replace Challenger series A 2020 E7819 S breaker

No wonder you're confused. You're looking at the metal piece on the Challenger breaker and thinking "that is the contact clip". No, it is not the contact clip. It is the CTL reject feature....
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2 votes

Wiring and breaker sizing help for Large Ventilation Fans

TL;DR: 12/2 on a 20A breaker for the branch circuit, 14/3 for the motor connections, but pay attention to the wiring details to the motors The easy TL;DR for this is that you can use 12/2 for the ...
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2 votes
Accepted

Different vintages breakers in main panel

Top left doesn't look like a Murray. It looks like a GE maybe -- and it's an A/C unit! Alien breakers are most common on A/C units because the contractors don't care and aren't electricians. As far ...
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2 votes

GFCI Test Trips Arc Fault Breaker

The common assumptions is that all GFCIs are receptacles. If an outlet needs to be GFCI protected, and you don't see a funny receptacle with a Test and Reset button, therefore somebody messed up. ...
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1 vote

Challenger Panel: Are there any issues with the breakers we are using?

The NEC says: 110.3(B) Installation and Use. Equipment that is Listed, labeled, or both shall be installed and used in accordance with any instructions included in the listing or labeling. Without ...
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1 vote

no 240 across breaker but 120 separately but dead one side I house

You have a bad phase. From what I can determine it is on your incoming. As for the 120V readings that is correct. For this to happen you need something turned on that is connected to the 220. That ...
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  • 3,051
1 vote

How to Hook Up 120V & 240V On AC Disconnect?

The wiring is fine, and nothing wrong with. Neutral is meant for the current to return so as long as the ungrounded conductors (red and black) are 'interruptible' by the disconnect, it looks good. The ...
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