Wiring a Tanning bed

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Old 01-13-09, 10:49 AM
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Wiring a Tanning bed

My wife purchased a used tanning bed. The bed calls for a 240v and 20 amp. I purchased a 20amp plug. I ran a 10/3 wire from a 20amp doubple pull breaker. I used the red, black and ground wires to complete the circuit. The issue I have is when I place the new plug on the the tanning bed I have black white and green. If I turn the bed on it runs for maybe 10sec then trips the breaker. It appears to me that the neutral (white) wire isnt used. I have gotten advice to hook the white wire in the box up to the group pole on the new plug and ground the 10/3 wire to the box. Does that sound right to anyone?
 
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Old 01-13-09, 11:18 AM
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The bed calls for a 240v and 20 amp... I ran a 10/3 wire from a 20amp doubple pull breaker.
Should have been 12-2 or 10-2 with ground. Cap the white wire and do not use. Use only red and black from breaker and ground. White and black of the cord set go to L1 and L2 on the tanning bed. Red and black of the supply cable go to x and y on the receptacle. Ground to green or g.

What is the amp rating of the tanning bed? Did you use a 20amp 3 prong 240v receptacle and plug? The fact that you used #10-3 wire causes me wonder.
 
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Old 01-13-09, 01:32 PM
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Tanning bed

Ray, I used a 20amp 250v plug and receptacle. The bed will turn on for maybe 10sec then trip the breaker.
 
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Old 01-13-09, 01:43 PM
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Are all the bulbs burning when it does start? Tanning beds are just a huge fluorescent fixture with about 16 ballasts or more, and of course a fan or fans to keep those cool.

I'd check to see if all the bulbs are burning and if all the fans are running.

If you're sure you're wired correctly chances are you have a bad/shorted ballast thats causing your OCP to trip
 
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Old 01-13-09, 02:11 PM
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No electrical guy...but does the spec plate on the bed say 20 amps...or do the install instructions call for a 20 amp breaker?
 
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Old 01-13-09, 02:15 PM
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Originally Posted by Gunguy45 View Post
No electrical guy...but does the spec plate on the bed say 20 amps...or do the install instructions call for a 20 amp breaker?
Good point, my mom's shop has some beds that are 20's, 30, a couple 50's and 60's.
 
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Old 01-13-09, 02:35 PM
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Also are you sure it is 240v not 277v? You said you bought it used. From an individual home user or a commercial establishment? What does the name plate say?
 
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Old 01-13-09, 05:08 PM
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Double check the nameplate on tanning bed and the connection at the ballast area I have a hunch that some tanning bed do run on 3 power { 3 phase } supply either 240 v or 208 v supply

I allready ran into some tanning bed use on 3 phase supply.

However if your breaker trip in 10 seconds that mean one of the ballast is going bad that will take time to find the bad ballast unless you got lucky in first place.

Merci,Marc
 
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Old 01-15-09, 11:58 AM
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Check the plate again

says
240 volt 10

I keep getting info that I need a neuatral. I dont get it. Is the ground coming from the bed suppose to be wired to the neuatral in the recepticale? and the recptical is just ground to the box?
 

Last edited by ga86475us; 01-15-09 at 12:36 PM.
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Old 01-15-09, 12:43 PM
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Originally Posted by ga86475us View Post
I keep getting info that I need a neuatral. I dont get it.
That info is wrong. A single-phase 240V circuit (in North America) does not use a neutral wire. If this unit was designed for use in Europe or some parts of Asia there are 240V systems with neutral wires so perhaps that is where the confusion is coming from.

Is the ground coming from the bed suppose to be wired to the neuatral in the recepticale?
No. The NEMA 6-20R receptacle does not have a neutral; only two hots and a ground. The white wire in your cable should be capped off at both ends and left unused. Red and black go to the two blades (doesn't matter which) and green/bare goes to the round post.



and the recptical is just ground to the box?
If the box is metal, then the receptacle and the bare ground wire from your cable must ground to the box via a green ground screw.

If you think that you have the circuit right, and the breaker still trips you could simply have a defective tanning bed. Perhaps the original owner sold it because it was broken?
 
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Old 01-15-09, 01:17 PM
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Could the problem be the double pull breaker? Should I wire it up to 2 single pull breakers on opisite sides in the breaker box?
 
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Old 01-15-09, 01:24 PM
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Originally Posted by ga86475us View Post
Could the problem be the double pull breaker? Should I wire it up to 2 single pull breakers on opisite sides in the breaker box?
It must be a 2 pole 240n breaker. No such thing as a 2 pull breaker. Is it possible you used a tandem (half size) 120v breaker instead of a 240v breaker? What is the voltage at the receptacle. Are the handles of the breaker you used tied together? Is this a GE breaker box?
 
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Old 01-15-09, 01:47 PM
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yes they are tied togather its a dsquare or square d
 
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Old 01-15-09, 03:42 PM
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While I'm reasonably sure from what you wrote you have 240v at the receptacle you might measure it to be sure.
Should I wire it up to 2 single pull breakers on opisite sides in the breaker box?
No you would never do that.
 
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Old 01-16-09, 12:32 AM
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Originally Posted by ga86475us View Post
says
240 volt 10

I keep getting info that I need a neuatral. I dont get it. Is the ground coming from the bed suppose to be wired to the neuatral in the recepticale? and the recptical is just ground to the box?
240volt 10 it it really mean 240 volt 1 { single phase }

Can you get the model number off this tanning bed somehow one of us can able indentify if that wiring is confreaged to either North America or European conferagtion as Ibpooks mention there is big diffrence between the two.

Even thru both use the same voltage however a nice gotcha is the Line - Netural { European } or Line to Line { NorthAmerican } and the other issue is the ballast connections that will affect it as well.

Merci,Marc
 
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Old 01-16-09, 08:35 AM
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Its a sundash r-18n any help you can offer would be great.
 
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Old 01-16-09, 09:03 AM
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Site for the manufacturer isn't very helpful but it appears it is intended for use in the USA. Time to open it and do a visual check. Do any of the ballasts seem to be leaking a black tar like substance?
 
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