Despite how dangerous and mysterious electrical work might appear, it is often one of the simpler aspects of home remodeling. Essentially, an electrical system is just a whole lot of wires snaking throughout the home's structure, linking at one end to fittings, receptacles (outlets) and switches and in the other end to the breaker box. And unlike pipes drains and structural assemblies such as roofs and walls, a wiring is elastic, in more ways than simply being bendy. 1 thing about electrical installation that is not flexible is your local building code. It has to be followed to the letter, whether you are adding a socket to your own workshop or fully renovating your kitchen.
The principal difference is that with a new job the framing is exposed, so it is a lot simpler to install things like wiring and boxes, while old work demands surgical cuts in drywall and drilling through framing with specific bits to decrease the amount of patching required.
In your local home center, you will find"new job" and"old work" electrical boxes. The latter have intelligent features like small clamping ears that permit you to mount the box only the to drywall; you do not need to fasten it to the framing (although this is subject to weight maximums and other requirements). Old work devices are incredibly handy for small DIY tasks like including a light fixture, but experts use them, also, to minimize disturbance of the existing wall and ceiling finishes.
The question of whether you should rewire a part of all your electrical system in a remodel is a huge one that surely can't be answered here. But there are some basic factors that are certain to come up. The important thing to check is the condition and capacity of your present system. In case you've got a fuse box (instead of a contemporary breaker system) or your household electrical support is anything less than 100 amps, then you should update to a new service panel (breaker box) with 150- or 200-amp support. This doesn't mean that you must rewire the entire house, nor does it mean you will use more electricity. It means you will have a safer system which can accommodate the additional requirements of your remodeled space and make it a lot simpler and safer to include circuits or rewire any component of your previous system later on.
Old circuit cables which don't include a ground conductor do pose some security risks, especially if the initial installation of the cabling or electrical devices was less than ideal. If you're not prepared for a whole-house rewire, it is possible to upgrade older circuits a la carte (in other words, rewire some and not others), according to their condition and their intended use; this is something to talk about with your plumber, general contractor or construction inspector. Whatever the case, bear in mind that all new electrical installations have to be completely current, as prescribed by local code.
After Code = Safe Abode
That's all that should be said about electrical safety; you have heard it already. Most local code authorities will allow you to replace an existing light fixture, receptacle or change without filing a license, but that is about it. Adding a new circuit or even expanding (tapping into) an current circuit probably requires a license and inspection.
By way of instance, an old toilet may have one or two standard outlets into which you plug in a curling iron, hair dryer, shaver charger and night-light. If you are using the hair dryer and it shorts out, your hair may dry into a crispy frizz, or you may get electrocuted and won't need to care what your hair looks like. A remodeled bathroom is going to have a fine, new 20-amp circuit to offer loads of power for your beauty needs, and each of the outlets will be GFCI (ground-fault circuit interrupter) shielded, to assist in preventing short-circuiting your life.
As stated previously, electrical systems are rather flexible, and electricians have a variety of tricks and techniques for conducting new wiring and adding devices without tearing up your home. So don't be afraid to tackle the wiring questions. And don't believe that cutting corners will save you a lot of money. Proper electrical installations do not necessarily require significantly longer or cost more than shoddy work. Where you pay extra with the latter is in lack of reassurance, compromised security and performance and, perhaps, legal issues in the future.