According to Nehmo Sergheyev :
- Nehmo -
What might the "required electric equipment" be?

- zxcvbob -
A one-space fuse box, or safety switch with a breaker or fuse in it.
The dryer is a 30A circuit, and the washer needs currect protection at
15A or 20A.

- Nehmo –
Every appliance doesn't need its own circuit breaker or fuse. The washer
can piggyback on one leg of the dryer circuit its breaker (yes, assuming
it won't overload it, and it probably won't).

Actually, there is a decent chance that running the washer and dryer
on the same circuit _will_ blow the breaker. Depends on how close the
breaker limit the heating coil is.

Secondly, there's a good chance that the circuit doesn't have a proper
split ground/neutral, which in some cases can lead to serious hazard.

Code-wise sharing the circuit like this is just plain wrong.
--
Chris Lewis, Una confibula non set est
It's not just anyone who gets a Starship Cruiser class named after them.