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-   -   Voltage reading off on 220 fuse box (http://www.diychatroom.com/f18/voltage-reading-off-220-fuse-box-19617/)

robert7361 04-07-2008 05:12 PM

Voltage reading off on 220 fuse box
 
The power supply at the fuse box that feeds the dryer in my house is reading 57 on one leg and 58 on the other. Any suggestions?

Silk 04-07-2008 05:17 PM

Yes, throw away your DMM and buy a Wiggy.

nap 04-07-2008 05:17 PM

what are you reading it to (ground, neutral, wall, screw on the junction box)?

have you taken a reading at your main panel and any subpanels if applicable?

joed 04-07-2008 05:40 PM

You need to tell us two points of reference. Also measure across both hots. Sounds like you are using a digital meter and getting a false or phantom reading. Probably the real reading is zero.

robert7361 04-07-2008 05:47 PM

I was measuring at the panel box from both sides where the fuse plugs in. I checked the 220 fuse for the stove and got 115 on each side for each fuse.

nap 04-07-2008 05:51 PM

as silk said, a DMM can be misleading if you do not understand what it tells you.

Are youusing a DMM?

also, tell us what you are placing the probes on. Need to know what you are measuring to.

Check from one side of the fuse to the neutral bar and then from the other side of the fuse to the neuitral bar.

do this for each fuse of the circuit.

robert7361 04-07-2008 06:00 PM

Yes I am using a DMM. I just didn't understand why I was getting a correct voltage reading on the 220 stove circuit, but not on the dryer circuit.

Speedy Petey 04-07-2008 06:18 PM

Quote:

Originally Posted by robert7361 (Post 114531)
I was measuring at the panel box from both sides where the fuse plugs in. I checked the 220 fuse for the stove and got 115 on each side for each fuse.

Did you get an actual (or close to) 240v on both the dryer and the range?
Also, did you test them with the appliances plugged in?

You may have a blown fuse. With the appliance plugged in you can get a reading through the load and can get the correct 120V on each leg, but you will not get 240v across the hots.


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