We just bought a new Bosch clothes washer that will require a 220v service rather than the 110V one that the older one used. It was designed to be plugged into the receptacle in the matching dryer which would then be plugged into the 220V receptacle that exists for that purpose already. Unfortunately, at over a $1000 a piece, we only bought the one. May one extend the line form that existing fixture a few feet for a second receptacle for the washer or do I need to get an electrician in to run a new line from the service box from one of the unused circuits (which I know would be the ideal.)

Hello RoninGC

I hope I understand the situation properly : you have a 220 Volt outlet and a 110 Volt outlet there.

Extending a 220 V line to another outlet is allowed, if done accordingly to the NEC rules.
But you have to check the fuse at the Main fuse panel, as that one will now be used by both washer and dryer.
The average dryer will have an up to 12 Amp current draw, and the washer also an up to 12 Amp current draw.
Add to that some extra for one of the motors starting (impulse current) and you need at least a 25 or 30 Amp fuse.

Note : let me know if I misunderstand the current configuration, so that I can advice accordingly !

Success !

:)

You should have an electrician run a new circuit. That circuit should be sized based on the requirements of the washer. Presumably the dryer would have the internal fusing to reduce from the 30 amp requirements of the dryer to the probably less than 15 amps requirements of the washer. Without that internal fusing you cannot just tap off the 30 amp line.

What Harold said.

DO NOT plug this into a 120/240v 30A US style electric dryer receptacle, and DO NOT extend this 30A line for your washer.

Either buy the correct dryer for your application or have a new line run.

Yes there is both 110 and 220 service. But reading the last two responses, I think that either running a new line or digging a little deeper and buying the matching dryer are the two solutions. Thank you all so much for the quick response.

Actually if the washer receptacle is a dedicated line and receptacle you can easily convert that to a straight 240v circuit.

Is that one box/receptacle all by itself?

I agree with Stan, If washer is on a dedicated circuit, reidentify, and connect to 2 pole breaker. A washer at 240 volts shouldn't draw more than 20 Amps, Verify.