I am looking to install an 18" under counter dishwasher in a 1922 built
home that has never had a dishwasher. The previous owner had installed
a garbage disposal. Unfortunately, instead of installing a double
outlet, the disposal was hard wired. The home has newer wiring but is
still running off of a fuse box. It looks as though there is a 20 amp
fuse connected to the existing hardwired disposal.
My questions are:
1) What do I need to do to get power to the dishwasher? Add a new fuse
to the box? Can I pull power from the exsiting wiring for the disposal?
2) If I power the DW from the existing disposal wiring do I have to add
a power swithch to allow for power to the DW to be turned off? I
realize differrent cities and counties have differrent codes.
Unless local codes prohibit, I see no problem running the DW off the
Disposal circuit. You say the disposal is hard wired, most are, but you
also have a wall switch to turn the disposal on & off.
If I was doing this, I turn the power off, in your case, remove the fuse.
I'd cut the Disposal wire near where it goes into the wall.
Mount an external wall box.
Install an outlet.
Use the outlet for both Disposal & DW.
I would FIRST upgrade the main electrical service to 200 amps with
Look every time you decide to add something o your vintage home you
will trying to work around the power issue:(
patch here patch there.
better to spend the bucks once and be done with the power troubles.
dishwashers are great convenience items.
but everyone must have a dependable power source.
while your redoing the ktchen intall 2 20 amp convenience circuits with
GFCIs, seperate breaker for dishwasher, seperate for fridge, etc etc.
if your redoing the kitchen do it right do it once and relax then and
enjoy your home.
replacing the service makes it worth more at resale time:)