Tabloul electric este în bucătărie.

Because -l / -ul is the Romanian definite article attached to the end of the noun.

• tablou = a panel / a picture
• tabloul = the panel / the picture

Romanian usually puts the at the end of the noun instead of using a separate word like English does.

So here:

• tabloul electric = the electrical panel

Yes — tablou very often means picture, painting, or image.

But in technical contexts, tablou electric is a set phrase meaning:

• electrical panel
• fuse box
• breaker panel

So this is one of those cases where a word has a more everyday meaning and a specialized meaning.

In Romanian, adjectives usually come after the noun.

So:

• tabloul electric = literally the panel electrical

That is the normal Romanian order. English usually puts adjectives before the noun, but Romanian usually puts them after.

You can sometimes move an adjective before the noun in Romanian, but that is less neutral and often sounds more stylistic or emphatic. In this sentence, tabloul electric is the standard order.

Because tablou is a neuter noun, and in the singular, Romanian neuter nouns take the same adjective form as masculine singular nouns.

So:

• singular: tablou electric
• plural: tablouri electrice

This is a classic Romanian neuter pattern:

• masculine-like in the singular
• feminine-like in the plural

Este means is.

So:

• Tabloul electric este în bucătărie.
• literally: The electrical panel is in the kitchen.

In normal Romanian, you usually keep este in a sentence like this. Leaving it out would sound incomplete in standard speech.

Romanian sometimes omits forms of to be in very informal speech, headlines, notes, or certain special structures, but not in a neutral full sentence like this one.

În means in.

So:

• în bucătărie = in the kitchen

It is a very common Romanian preposition. You will see it all the time in phrases like:

• în casă = in the house
• în cameră = in the room
• în oraș = in town

This is a very common learner question.

Romanian often uses a bare noun after a preposition for familiar places or rooms, where English would naturally say the.

So:

• în bucătărie very naturally means in the kitchen

This is just how Romanian often expresses location.

If you want to specify which kitchen more explicitly, Romanian often adds more information:

• în bucătăria mea = in my kitchen
• în bucătăria apartamentului = in the apartment’s kitchen

So even though English uses the, Romanian does not always need a definite form in the same place.

Bucătărie is a feminine noun.

Some useful forms are:

• o bucătărie = a kitchen
• bucătăria = the kitchen
• bucătării = kitchens
• bucătăriile = the kitchens

In the sentence, you see the base form bucătărie after the preposition în.

These are two important Romanian vowels:

• ă as in bucătărie: a short, neutral sound, similar to the a in sofa
• î as in în: a sound that does not really exist in standard English; it is a close central vowel, said with the tongue high and centered

Very rough pronunciation help:

• în ≈ a tight central ih/uh sound, but not exactly either one
• bucătărie ≈ boo-kuh-tuh-REE-eh

And a rough full-sentence pronunciation:

• Tabloul electric este în bucătărie
• roughly: tah-BLOW-ul eh-LEK-trik YES-teh în boo-kuh-tuh-REE-eh

Yes, Romanian word order is somewhat flexible, but the original sentence is the most neutral.

Neutral:

• Tabloul electric este în bucătărie.

You could also say:

• În bucătărie este tabloul electric.

That version puts more focus on în bucătărie and may sound more marked or context-dependent, as if answering Where is the electrical panel?

So the original version is the best basic model for learners.

The plural would be:

• Tablourile electrice sunt în bucătărie.
• The electrical panels are in the kitchen.

Notice the changes:

• tabloul → tablourile
• electric → electrice
• este → sunt

This shows the normal agreement pattern in Romanian:

• noun changes
• adjective changes
• verb changes

Yes. It is grammatically natural and easy to understand.

The only small note is that tabloul electric is a somewhat practical/technical expression, so you might hear it in contexts such as:

• giving directions in a house
• explaining where the breaker box is
• talking to an electrician
• describing a home

So it is perfectly natural Romanian, just a bit more specific than a very basic beginner sentence like Cartea este pe masă.