220?

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Old 02-03-13, 05:02 PM
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220?

how do I find out if my house has 220 service?
 
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Old 02-03-13, 05:11 PM
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Unless your house is very old with a very small service it most certainly has a 120/240 volt service.
 
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Old 02-03-13, 05:39 PM
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thanks! I just checked the breaker for my dryer and it says 120/240. I just bought a commercial tanning bed and I was trying to make sure my service will support it.
 
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Old 02-03-13, 05:51 PM
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Make sure it is supported by 240 volts. If it is commercial it can be rated differently. You'll need to know the amperage required to run it and install the proper cabling from the panel protected by the proper breaker, and with the right receptacle. Your dryer circuit is only 30 amps, so be aware.
 
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Old 02-03-13, 06:04 PM
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Some tanning beds require 220 volts or the bulbs will be damaged. Your house has 240 volts. Be sure the tanning bed is rated for 240 volts.
 
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Old 02-03-13, 06:27 PM
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the manual says 14 amps @ 240 volts circuit required: 120/240 V, 2 pole 20 amp breaker. Isn't that a sizesmaller (20 instead of 30) breaker an electric dryer takes?
 

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Old 02-03-13, 06:38 PM
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the manual says 14 amps @ 240 volts circuit required: 120/240 V, 2 pole 20 amp breaker. Isn't that a sizesmaller (20 instead of 30) breaker an electric dryer takes?
That's one way of saying it, but I refer to say it's 10 amps less than what is required by the dryer. That doesn't mean you can use the dryer circuit though. You'll need a new 240 volt circuuit (not 220).
 
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Old 02-03-13, 06:39 PM
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I was reading on another site that I should make sure I have at least 220 amp service to support the bed (esp since I have a hot tub that needs wired also) I'm not sure how to figure that out.
 
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Old 02-03-13, 06:46 PM
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I was reading on another site that I should make sure I have at least 220 amp service to support the bed (esp since I have a hot tub that needs wired also) I'm not sure how to figure that out.
Either you misunderstood or the other site was amateurs. You need 120/240 volt service which you have. The tanning bed requires 20 amp 240 volt service according to your earlier post. Most hot tubs require either 50 or 60 amp 120/240 volt service. What you probably need is 200 amp, 120/240 volt service to add these additional loads to your home, but that really all depends on what loads you currently have. It's a reasonable assumption, however, to assume you need 200 amp service.
 
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Old 02-03-13, 06:57 PM
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It might have been an amateur site. Do all houses have 200 amp service? Or is there a way to find out what the amp service in my house is?
 
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Old 02-03-13, 07:01 PM
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the manual says 14 amps @ 240 volts circuit required: 120/240 V, 2 pole 20 amp breaker.
Which just proves how dumb the people who write the manuals are. First they say it require 240 volts then in the same sentence 220 volts, dumb then dumber. No such thing as a "120/240 V, 2 pole 20 amp breaker." What they should have said was a 2pole 240 volt 20 amp breaker.

How many prongs on the tanning bed plug. If it is 3 prong, and I suspect it is, you only need a 240 volt line. If it is four prongs you need a 120/240 volt line. We need to know that before we help you run the new circuit.
 
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Old 02-03-13, 07:09 PM
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Hard wired. No plugs. 4 wires. red- hot, black- hot, green- ground, white- neutral.
 
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Old 02-03-13, 08:02 PM
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You are going to need to do a demand load calculation to see if your service can handle the additional loads. Your service could be 100, 150 or 200 amps. You may be looking at a service upgrade costing over $1500.
 
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Old 02-03-13, 08:36 PM
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OUCH!! guess it's a good thing I'm in line for an electrical apprenticeship Might have to wait till I get on there!! LOL I will do a demand load calculation and hope for the best!
 
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Old 02-03-13, 08:39 PM
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Old 02-03-13, 09:39 PM
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To find the size of your service, look on the main breaker or main fuses. They will have an amp number on them. You may already have a large enough service.
 
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Old 02-04-13, 06:32 PM
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No such thing as a "120/240 V, 2 pole 20 amp breaker." What they should have said was a 2pole 240 volt 20 amp breaker.
Actually, both are available, but the most common is 120/240 volt rated for typical single phase service. In the case of Square D, a 2 pole 20 amp breaker readily available is a QO220 which is rated 120/240 volts. A 2 pole 20 amp 240 volt breaker would be a QO220H and is used on some 3-phase services.

QO220 Product Detail - Schneider Electric

QO220H Product Detail - Schneider Electric
 
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