An electrician would install a 30-amp 240-volt circuit to serve such a water heater. How many 50 amp RV sites can a 200 amp meter service handle? What size amp circuit breaker would protect a 12kW boiler? I carry two different 50 amp breakers in case I run into this. Is it 50 amps per leg or 25 amps per leg? I am installing a 50 AMP 2 pole breaker for my RV. 10 Winter Camping Items You Shouldn’t Travel... 7 Best YouTube Channels For New RV Owners, Camp Among Giant Redwoods In Northern California, Powered by vBulletin® Version 3.8.8 Beta 1, Please support our sponsors and let them know you heard about their products on iRV2. No! Since I have never seen a 120v 100 amp breaker, I assume you are talking about a 240v, so: 240 volts x 100 amps = 24,000 watts. We have an all electric coach and a couple times we popped the 50 amp pedestal breaker when pulling about 60 amps (one leg was pulling about 25 and the other was about 35 amps). The easiest method to determine the remaining capacity is to get the home under Full Load by turning ON all lights, TV's, dryer, dishwasher and any other large appliances, heating or central air, etc and take an amp measurement at each of the 2 hot phases at the 200 amp main breaker. Can a 12-Gauge Wire Handle 25 Amps? This breaker is either factory mounted or can be added by either bolting it in or snapping it into place. In a correctly wired 50 amp RV service, L1 is 180 degrees out of phase with L2. Well, that does equal 50 doesn't it? Installing a double-pole 50-amp breaker is normally a job for an electrician, but a competent homeowner can do it. The extra prong carries the second 120 volt connection to get 240 volts total. Thanks! Only a 10-gauge copper wire with either a 75 ℃ or 167 ℉ or 90 ℃ or 194 ℉ ambient temperature rating, as well as a 10-gauge aluminum wire with an ambient temperature rating of 90 ℃ or 194 ℉ can handle 35 Amps. The issue is with the wording of the question. At 220 volts, this is 50 amps! Specific appliances may need dedicated, high-load circuits for 30 or 50 amps. The main breaker is marked with the value of protection (like 100 amps) on the breaker handle. At 50 amps the breaker should trip very quickly (I can't remember the specified time). 5 Ways Smartphones Can Improve Your RV Trips. Here is the dirty little secret about 50 amp RV plugs. ... All 15 @ 50 amps 2. That means 40 amps per line on a two pole 50 amp circut. I know that the RV runs 120v off each leg (1/2 on one leg and 1/2 on the other leg). This rating is labeled on the breaker itself. A double pole circuit breaker provides an appliance with 2, 30 amp, 120 volt services, for a maximum draw of 30 amps at 240 volts. Do You Need A Portable Air Compressor For Your RV? You should be able to draw a constant 80% of the rated circut. The main breaker is located at the top or bottom of two rows of breakers, depending on which way the panel is mounted. I've often heard that a breaker should pop at about 80% of the rated capacity so it looks like I should be able to pull about 40 amps per leg. You should not exceed the capacity of the circuit through the usage of high ampere requiring machinery. No matter where you fit in you'll find that iRV2 is a great community to join. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more! This is due to the 8 AWG cable connecting the two panels. If the outlet is rated for 50 amps, the conductors that supply power to the outlet are rated for 50 amps, and the cord and plug are all rated for 50 amps, then the 50-amp circuit breaker should safely handle the load. Do you need advice on what products to buy? They are sized for 50 because 50 is the max they will carry. Depending on what you are trying to calculate you would have to measure exact voltage under load to determine your utility supply. Similarly, can 10 gauge wire handle 35 amps? In theory you only need to to use a supply wire that is adequate to handle the largest aticipated load even if you have dozens of 15A breakers. At the power post, they are wired for 240 volts and split into two 50 amp breakers. As you have mentioned a “30 Amp“ breaker can withstand a max of 30 Amp after which it will trip if the design is good (or else burn). A water heater though, uses a 30 amp breaker. And yes, that is per leg, But each leg is different so it's not 45+45 = 90 If you are drawing 49 on ONE leg, … US State License Plate Mottos Quiz: Where Are We? If the appliance draws 30 amps, you need a different type of … They aren’t exactly 50 amps. You are currently viewing our boards as a guest so you have limited access to our community. He claimed that his breakers were fine and said the most I can pull is 25 amps per leg. Can I put a 50 Amps plug on a 30 Amp breaker? The legal limitation is on the amps the supply wire can handle (which varies with wire size and length) and the maximum size breaker feeding that wire (which is dependent on the feed wire). Without a fuse to disrupt the flow of power when too many amps are pushed through a circuit, wires overheat, wire insulation melts and fires break out. If you're wiring a 220v, 20-amp outlet to run power tools, you can use the same 12-gauge wire you would use for a 110-volt, 20-amp circuit. By using The Spruce, you accept our, Calculating Electrical Load Capacity for a Home, The Basics of 240/250-Volt Air Conditioner Circuits, Learn What Happens When an Electrical Circuit Overloads, Sizing Electrical Wire for Underground Circuit Cable, What You Need to Know About Kitchen Electrical Code, Safety Rules for Using a Portable Generator, Electrical Circuit Requirements for Kitchens, How to Avoid Overloaded Circuits With Christmas Lights, How to Replace a Standard 120-Volt Outlet Receptacle, The Electrical Circuits Needed When Remodeling a Kitchen. Every circuit breaker has a specified amperage (amount of current). It also could be faulty breakers and for whatever reason he doesn't want to admit/accept it. You are correct in that 50A per leg is what to expect. When used in home wiring a double pole breaker is used when a 240 volt service is needed (for a high draw appliance like a range or dryer). Introducing "One Thing": A New Video Series. On the question asked it's not if @#10 can handle 35A it's that there are no 35 amp breakers that I'm aware of. The breaker protects the wiring not the boiler. Can I use a 50 amp breaker for a 40 Amp hot tub? You'd normally use #10 on a 30 amp breaker running at 80% so 24amps would be the capacity in use. 8 AWG may carry a maximum of 70 Amps in free air, or 50 Amps as part of a 3 conductor cable. An important note to remember is that circuit breakers can only handle about 80% of their overall amperage. assume the last 50 amp space is 260 feet from the meter. Each circuit breaker should have its amperage marked on the handle. iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? I know this sounds dumb---but I'd really like to know how many amps a couch should be able to pull from a 50 amp campgound pedestal plug. Of course, all of this requires adequate internal protection of the spa. 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