Each dishwasher comes with a junction box (with power cord) to be installed in a cabinet next to the dishwasher cutout. It can be installed by an installer, servicer, technician, electrician or other qualified professional and is intended for hard-wired installations.
The receptacle should not be behind the dishwasher. To access it; you would have to remove the dishwasher. Just like the dishwasher drain and water line that go to the sink water valve and drain; the dishwasher electric cord plug should go to a receptacle under the kitchen sink.
Bosch Ascenta, 100, 300, 500, 800 and benchmark Series dishwashers all come with a 3-prong power cord for installation. This junction box cord can also be used for hard-wired installation for all Bosch dishwasher models. Bosch ADA dishwasher models come with this junction box.
Unlike plug-in appliances, a dishwasher must be hardwired and hooked up to the home's plumbing. If you're for the challenge of installing it yourself, you can save a lot of money.
Dishwasher Circuit
When installing a dishwasher, the circuit should be a dedicated 120/125-volt, 15-amp circuit. This 15-amp circuit is fed with a 14/2 NM wire with a ground. You may also elect to feed the dishwasher with a 20-amp circuit using 12/2 NM wire with a ground.
Dishwashers are hardwired. They consume a relatively high amount of power, so it is not advised to use the same method to connect your other household appliances.
Kitchen dishwashers installed in dwelling units require GFCI protection whether hard wired or cord and plug connected. Code Change Summary: A new subsection was added regarding dwelling unit kitchen dishwashers. Now, outlets that supply dwelling unit kitchen dishwashers must have GFCI protection.
In the time it takes to run to the breaker box to turn off the breaker, the dishwasher could deposit an inch or two of water on the floor. A hard-wired connection, on the other hand, avoids the need for an extra receptacle under the sink, where there may not be room for one.
A junction box is an electrical enclosure that houses one or more wiring connections. The box protects the connections, which usually contain vulnerable points such as wire splices, from environmental conditions and accidental contact.
All Bosch dishwashers are compatible. The box cord is used in hard-wired installations. Installation instructions can be found here.
All Bosch dishwashers come with 110v power cord for plugging into wall outlet. If you are hardwiring then you must use the Bosch power cord with junction box accessory.
The receptacle for a built-in dishwasher shall be located in the space adjacent to the space occupied by the dishwasher.
Wiring Dishwasher GFCI NEC Code
Changes have been made to the NEC to include dishwashers in the list of appliances that require GFCI protection. Therefore, if you have a dishwasher, unless your local code says otherwise, you should pair it with GFCI protection.
A utility box can also be called an electrical box and it would be composed of switches, electrical sockets, and also fixtures. The major difference between a junction box and a utility box is that a junction box would house the electrical connections while the utility boxes are used to install switches, fixtures, etc.
Key Difference between a Terminal Box and a Junction Box
Terminal boxes are used for particular connections when there is no room for future extension or where the expansion of connections is not required in the future. On the other hand, a junction box has a small footprint and lots of working area.
A plastic electrical box might be a better choice for your application if: You're using non-metallic sheathed wire (often called Romex wire). Romex wire and plastic junction boxes are frequently used together, but metal enclosures may be acceptable as well (depending on the project).
A hardwired setup to the dishwasher can be converted where a surface mounted outlet box may be mounted for the wiring to be connected to a outlet and cover. An electrical cord rated for your dishwasher, most likely 15 amps 120 volts, would need to be installed in place of the hardwired connection.
Another revision to GFCI protection in the 2020 NEC is to section 422.5(A) dealing with appliances that require GFCI protection. This section was revised to include dishwashers. Yes, dishwashers!
The dishwasher needs a single-pole breaker that has at least 15amps. If you operate the dishwasher on the same circuit breaker as the garbage disposal, you need to use a 20 Amp breaker.
A dishwasher should be on at least a 15 amp circuit. 15 amps is enough for most dishwashers on their own dedicated circuit. A dedicated circuit is a plug used for just one appliance, with nothing else plugged into it. Some dishwashers draw more power than most, and may need to be placed on a 20-circuit breaker.
According to the electrical code, the dishwasher should be on its own circuit. The dedicated dishwasher circuit can't supply any other appliances, lights, fixtures, or outlets. In addition, the circuit that is servicing the dishwasher also needs to have a circuit breaker with at least 15-amps.
Yes a disconnect is required for a dishwasher. It could be the switch on the unit if it is marked with an off position and disconnects all ungrounded conductors. It can also be the circuit breaker if it is within sight of the appliance or has provisions for locking in the off position.
Makes hardwiring easy
Newer Bosch dishwashers use a special power cord that plugs into the back of the unit. It comes with a standard 3-prong cord that works if you have an outlet for power. If you have a hardwired dishwasher, this box allows for an easy-to-wire junction box with a white, black and green terminal.
The dishwasher is designed for an electrical supply of 120V, 60 Hz, AC, connected to a dishwasher-dedicated, properly grounded electrical circuit with a fuse or breaker rated for 15 amps.
No, not all dishwashers are hardwired. Instead, you can purchase dishwashers that come prepared with an electrical cord and a three-prong plug. These units will easily connect to a regular wall socket that you'd have in your household kitchen.