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electrical:shore_power [2022/07/12 13:00] frater_secessus [15A/20A shore power] |
electrical:shore_power [2023/10/30 15:00] frater_secessus [30A shore power] |
**15A** power receptacles are the familiar ones found in a residence.((NEMA 5-15, https://en.wikipedia.org/wiki/NEMA_connector#NEMA_5)) They can carry 1800W((http://rvservices.koa.com/rvinformation/rvmaintenance/rv-electrical-101.asp)) and are the type of shore power many DIY RVs and vans are built around.((assuming they have shore power receptacles at all)). | **15A** power receptacles are the familiar ones found in a residence.((NEMA 5-15, https://en.wikipedia.org/wiki/NEMA_connector#NEMA_5)) They can carry 1800W((http://rvservices.koa.com/rvinformation/rvmaintenance/rv-electrical-101.asp)) and are the type of shore power many DIY RVs and vans are built around.((assuming they have shore power receptacles at all)). |
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**20A** power receptacles are similar but the "hot" leg has an additional spur.((NEMA 5-20, https://en.wikipedia.org/wiki/NEMA_connector#NEMA_5)) This arrangement **allows 15A plugs to go into 20A receptacles** but **prevents the heavier duty 20A plugs from being used in a 15A circuit**. | **20A** power receptacles are rated for 2400W((http://rvservices.koa.com/rvinformation/rvmaintenance/rv-electrical-101.asp)). They look like 15A outlets but the "hot" leg has an additional spur.((NEMA 5-20, https://en.wikipedia.org/wiki/NEMA_connector#NEMA_5)) This arrangement **allows 15A plugs to go into 20A receptacles** but **prevents the heavier duty 20A plugs from being used in a less-powerful 15A circuit**.((which might overload the 15A circuit)) |
Because of the backward-compatible 20A socket folks folks can plug in their 15A rigs at both 15A and 20A hookups. | Because of the backward-compatible 20A socket **folks with 15A rigs can safely plug in at both 15A and 20A hookups**. |
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The 20A outlet is rated for 2400W.((http://rvservices.koa.com/rvinformation/rvmaintenance/rv-electrical-101.asp)) | |
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Note: using a 10A circuit breaker on the RVs AC breaker box will prevent tripping a residential circuit breaker when the RVer might not have access to reset it. A 15A breaker might or might not, depending on whether the RV or residential breaker trips first. | Note: If "driveway surfing" on an extension cord, using a 10A circuit breaker on the RVs AC breaker box will prevent tripping a residential circuit breaker when the RVer might not have access to reset it. A 15A breaker might or might not, depending on whether the RV or residential breaker trips first. |
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A 'dweller can safely power a 15A RV from a 30A outlet with [[http://amzn.to/2irQhRV|an adapter]]. | A 'dweller can safely power a 15A RV from a 30A outlet with [[http://amzn.to/2irQhRV|an adapter]]. |
===== 30A shore power ===== | ===== 30A shore power ===== |
{{ http://www.generatorsforhomeuse.us/wp-content/uploads/tt-30r.png?200}} | {{ http://www.generatorsforhomeuse.us/wp-content/uploads/tt-30r.png?200}} |
30A is the standard setup for small-to-medium RVs.((NEMA TT-30, https://en.wikipedia.org/wiki/NEMA_connector#Nomenclature)) It can supply 3600W,((http://rvservices.koa.com/rvinformation/rvmaintenance/rv-electrical-101.asp)) ypically sufficient to run an air conditioner and other items in the RV. | 30A is the standard setup for small-to-medium RVs.((NEMA TT-30, https://en.wikipedia.org/wiki/NEMA_connector#Nomenclature)) It can supply 3600W,((http://rvservices.koa.com/rvinformation/rvmaintenance/rv-electrical-101.asp)) typically sufficient to run an air conditioner and other items in the RV. The [[https://amzn.to/3U8HhCQ|NEMA TT-30R plug]] is common. There is also a [[https://amzn.to/3QFlMGM|L5-30R twist-lock]] style. |
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If the 30A circuit on a 30A/50A pedestal is broken or malfunctioning the camper can use [[http://amzn.to/2hGJNzH|an adapter]] to get power from the 50A circuit.((http://rvbasics.com/techtips/50-to-30-amp-adapter.html)) Note this may incur a price increase from the park. | If the 30A circuit on a 30A/50A pedestal is broken or malfunctioning the camper can use [[http://amzn.to/2hGJNzH|an adapter]] to get power from the 50A circuit.((http://rvbasics.com/techtips/50-to-30-amp-adapter.html)) Note this may incur a price increase from the park. |
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The RV can also run off a 15A/20A outlet with an adapter but would have to be careful about loads (heavy loads like a single A/C unit, electric cooktop, or microwave would have to be run one at a time). | The 30A-equipped RV can also run off a 15A/20A outlet with an adapter but would have to be careful not to exceed the 15A/20A limit. |
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===== 50A shore power ===== | ===== 50A shore power ===== |
{{ https://greentransportation.info/ev-charging/range-confidence/chap8-tech/img/nema-14-50-wiring-diagram.png?200}} 50A systems are most common in large, luxury RVs with two or more A/C units.((NEMA 14-50, http://www.rv-project.com/resources/nemaconn.php)) The 50A RV power pedestal has //two// 50A 120V legs((http://www.myrv.us/electric/Pg/50amp_Service.htm)) ([[https://en.wikipedia.org/wiki/Split-phase_electric_power|split-phase]]) and can deliver 6,000W of power on each leg.((http://www.myrv.us/electric/Pg/50amp_Service.htm)) | {{ https://greentransportation.info/ev-charging/range-confidence/chap8-tech/img/nema-14-50-wiring-diagram.png?200}} 50A systems are most common in large, luxury RVs with two or more A/C units.((NEMA 14-50, http://www.rv-project.com/resources/nemaconn.php)) The 50A RV power pedestal has //two// 50A 120V legs((http://www.myrv.us/electric/Pg/50amp_Service.htm)) ([[https://en.wikipedia.org/wiki/Split-phase_electric_power|split-phase]]) and can deliver 6,000W of power on each leg.((http://www.myrv.us/electric/Pg/50amp_Service.htm)) |
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50A to 30A adapters will use one leg of the outlet to feed the RV with 50A. | 50A to 30A adapters will use one leg of the outlet to feed the RV with 50A. |
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| ===== constant-duty rating ===== |
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| The constant-duty((continuous load)) rating of each is 0.8 of the normal rating: |
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| * 50A is rated to 6,000w on each leg (4,800w constant duty) |
| * 30A is rated to 3,600w (2,880w constant duty) |
| * 20A is rated to 2,400w (1,920w constant duty) |
| * 15A is rated to 1,800w (1,440w constant duty) |
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- sand the edges to remove sharp edges | - sand the edges to remove sharp edges |
- treat edges with paint, primer, rust preventive, etc to prevent rust. The edges will not be visible once the port is installed | - treat edges with paint, primer, rust preventive, etc to prevent rust. The edges will not be visible once the port is installed |
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===== power testers ===== | ===== power testers ===== |
Before plugging into shore power the RVer may want to test the receptacle for "good ground, open circuits, reversed polarity and safe voltage."((http://50amppowerpal.com/pages/faq)) | Before plugging into shore power the RVer may want to test the receptacle for "good ground, open circuits, reversed polarity and safe voltage."((http://50amppowerpal.com/pages/faq)) |