Whether or not you can use 10ga wire for something that is 160 away is another issue relating to whats called 'voltage drop' and is caused by the natural resistance of the wire based on the actual load at the other end. You cannot use 12ga wire on a 30A breaker, 10ga is the minimum size. If the new dryer has a 30-amp plug on it already I would change the plug rather than the cord. A 40-amp breaker needs an 8-gauge wire size. A 30-amp breaker needs a 10-gauge wire size. A 25-amp breaker needs a 12-gauge wire size. A 20-amp breaker needs a 12-gauge wire size. However, its usually easier (and often cheaper) to change a wall plug than open up the new dryer. The amperage drawn by the heater determines the wire gauge size. So you won't need the aforementioned subpanel because the 30 amp circuit needs to be dedicated to the light controller. As the gauge number goes up, the size goes DOWN. Youll have to replace the breaker, the wiring from the breaker to the receptacle, and the receptacle. Wiring installation on new construction Show more. That said, I use 6 ga wire with a 50 amp breaker and either a NEMA 6-50 or 14-50 receptacle for all of my single phase small to medium size welders and plasma cutters. So, I guess you could use 10 ga wire with a 60 amp breaker if it was only used for a welder with 50 or less duty cycle. Such a subpanel might be portable and resemble a power strip with "switches" (breakers) for each receptacle.Ī device such a dryer that takes a 30 amp circuit uses most of the 30 amps and it is good taste (if not required by code ) that no other device share that circuit. How to wire a double pole 30 amp breaker on new construction. The receptacles do have to be marked For Welder Use Only. In order to use a 30 amp feed to supply a variety of 120 volt ordinary devices "directly" you need a subpanel that had 15 and/or 20 amp breakers to protect the various "subbranch" circuits feeding the receptacles. It is preferable to use two or more 15 amp or 20 amp 120 volt feeds (or branch circuits) to supply a variety of ordinary 120 volt receptacles. You must use 10 AWG three-conductor cable to make this connection. Does your light controller take (according to its instructions) a 30 amp circuit or feed? If so then it contains the necessary parts for distributing the power to 120 volt internal components and perhaps one or two ordinary receptacles on its outside for you to plug in other small things of your choice. When installing a 30-amp subpanel, you connect it to the main panel via a 30-amp, double-pole breaker.
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