Electrical Wiring in the Home/pull out fuse block

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Question
i have a cutler hammer fuse box with two small pullout block below the plug fuses. the small block on the right . when tested with a multimeter read 120 volts on three end plugs the fourth one the one on the bottom left reads 21 volts why. my dish washer and my in wall air conditioner with a 240 volt pugs won't work the ac keeps blowing the fuses and the dishwasher won't power up why?

Answer
Blown fuse.
If the air conditioner keeps blowing the fuse, does the dishwasher work if you disconnect the air conditioner?
Sounds like you may have a bad air conditioner.
It would not be a bad idea to replace the service. Must be 50 years old, anyway.
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Electrical Wiring in the Home

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Robert Wilber

Expertise

Licensed Philadelphia electrician serving Delaware, Chester, Montgomery and Philadelphia County in Pennsylvania. I install and repair residential, commercial and industrial wiring and lighting. Troubleshooting and repair of problems that stump other people is my favorite. I am willing to help people figure out why things don`t work. I understand motor controls, transformers and machine wiring. I do not teach basics to novices or do free design work.

Experience

Experience in the area I have 44 years experience in residential, commercial and industrial electrical construction and repair, 480 volts and below. This is not to be confused with one week repeated two thousand times.

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44 years experience in residential, commercial and industrial electrical construction and repair

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