Question about Connecticut Electric 40 Amp 2 Pole Circuit Breaker
I want to put a on and off switch just like a light switch in the wiring for my compressor. It has a 40 amp breaker and is a 220 volt compressor. I have a 30 amp, 600 volt switch and I need to know if this is correct or do I need to use a 40 amp switch. Thanks
First of all, i am not sure if you are knowledgable on electric circuits....your breaker panel is probably a single phase which is nominal so your compressor being a 40 amp 220 volt unit needs a dual breaker at 40 amps meaning that both the black and white wires go to the breaker......then if you want to also add another on-off switch in line with it to control it from another location, you can use a single pole, single throw switch rated for at least 220 volt with contacts that can handle at least 40 amps or higher.....you would connect such a switch by cutting either the black wire and connect both ends of the cut black wire to the 2 contacts of the switch or you can also do the same with the white wire......by using a single pole switch though, one side of the line will always be live even though you shut off the power......you can use a double pole, single throw switch to connect both the white and black wires to, which will completely cut off the power when switched off....if all of this is too much to understand, then just use your existing 40 amp breaker in the panel as your on and off switch........good luck....be careful as 40 amps and 220 volt is extremely LETHAL........good luck
Posted on Jun 28, 2010
NO! Use a switch rated higher in amps and equal to or higher in voltage relative to the breaker rating. Use a 40 or 60 amp switch rated a minimum 220 volts.
Posted on Feb 28, 2009
On the compressor or in the manual it should say the Full Load Current or Full Line Current (FLC). I would go by that to size your switch.
They make motor rated toggle switches which look the same as a light switch. You would need a *blank* amp motor rated 2 pole toggle switch it should have 2 screws on each side excluding the ground. The left side screws should have one circuit on them and the right side should have the other circuit on them. Mount this in a metal box with a "RS switch cover" for inside installs or a "Bell" or ferrous box for outside with a weatherproof switch cover. Make sure you buy a big enough box to fit the switch and room to bend the wires. Also are you planning on just cutting a cord and running to the switch or hard wiring? Make sure to get appropriate connectors and if it is exposed to possible damage consider using flexible mettalic conduit.
FYI in most cases a switch can not be oversized it can be undersized however.
Feel free to write back if this is unclear.
Posted on Mar 31, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Sep 26, 2012 | Square D Qo 200 Amp 40 Circuit Indoor...
Jul 21, 2012 | Rheem R-410A Complete Split System Heat...
Jan 12, 2011 | Ingersoll Rand Single Stage Cast Iron 3 Hp...
Jan 09, 2011 | Ingersoll Rand - Rand Type - 30...
Oct 13, 2010 | Siemens /ite Bq Circuit Breaker Bq3b090 3p...
Mar 12, 2010 | Craftsman 3 gal. Air Compressor, 1.5 hp,...
Dec 16, 2009 | Cutler Hammer Electrical Supplies
Nov 12, 2009 | AO Smith 2 Hp Spl 3450rpm M56 Frame...
May 24, 2009 | Nor-Lake Freezer Walk In Freezer 6ft x...
Feb 26, 2009 | Connecticut Electric 40 Amp 2 Pole Circuit...
Apr 21, 2017 | Electrical Supplies
684 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: