Re: Need help wiring up 240VAC.
Can that be installed on an entire breaker panel or would we need one for each device (receptacles, etc)? In the USA, all fifty states must follow the National Electric Code. It's a very large set of standards setup in place that say things like if you're using a 15-amp breaker, you cannot use anything smaller than 14 gauge wire. Or if you're using a 20-amp breaker, you can't use anything less than 12-gauge. Or if you're going to bury the wire, it needs to be a certain type. There's different NEC's for Commercial. They're held to a bit higher standard.
Local Jurisdictions can add to the NEC but they cannot remove from it (to my knowledge). For example, in my area, I believe our county added that any new construction must have arc-fault breakers, not gfci breakers or normal breakers.
The NEC is updated every 3 years I think? The current NEC is 2017. You can setup a free account and view the entire NEC on one of the government webpages. It's huge. In cities, especially like mine, anytime any electrical work is done, we're supposed to get a permit (by sketching up what we're planning on doing), and once it's approved, we start work. Throughout the process, depending on what you're doing, the local code inspector will come and inspect the work. If you're adding a new addition to the house, there'd be four phases for the inspect. They'd come up once the foundation was laid to inspect it. They'd come up when the frame was up, to inspect it. They'd come up once the electrical was ran to inspect it, and finally, once it was all done they'd come in for their final inspection.
In some states though, or depending on what you're doing, you, as a regular Joe, might not be able to submit a sketch of what you're doing. You might need a real engineer to sign off on real blueprints or something before work can begin. If we want a walk-around balcony, we'd need a real engineer to sign off on the blue-prints, stating exactly how many people it could support, the maximum weight, etc.
That way, we don't have idiots that think they know how to wire up a house try wiring up a house and causing a fire that spreads and catches all the other houses on fire.
Originally posted by stj
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Local Jurisdictions can add to the NEC but they cannot remove from it (to my knowledge). For example, in my area, I believe our county added that any new construction must have arc-fault breakers, not gfci breakers or normal breakers.
The NEC is updated every 3 years I think? The current NEC is 2017. You can setup a free account and view the entire NEC on one of the government webpages. It's huge. In cities, especially like mine, anytime any electrical work is done, we're supposed to get a permit (by sketching up what we're planning on doing), and once it's approved, we start work. Throughout the process, depending on what you're doing, the local code inspector will come and inspect the work. If you're adding a new addition to the house, there'd be four phases for the inspect. They'd come up once the foundation was laid to inspect it. They'd come up when the frame was up, to inspect it. They'd come up once the electrical was ran to inspect it, and finally, once it was all done they'd come in for their final inspection.
In some states though, or depending on what you're doing, you, as a regular Joe, might not be able to submit a sketch of what you're doing. You might need a real engineer to sign off on real blueprints or something before work can begin. If we want a walk-around balcony, we'd need a real engineer to sign off on the blue-prints, stating exactly how many people it could support, the maximum weight, etc.
That way, we don't have idiots that think they know how to wire up a house try wiring up a house and causing a fire that spreads and catches all the other houses on fire.
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