What is an EMS for an RV?

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RV owners know that the electrical system is a vital part of their vehicle, and it’s important to keep it in good shape.

Electrical overloads can be dangerous for your RV, as well as expensive. The EMS will help you avoid these problems by providing protection against them. It also provides clean power to all your devices so you don’t have to worry about battery life or damaging the electrical system with a faulty connection.

If you have an RV, then you might be wondering what the “EMS” acronym stands for. What is an EMS?

EMS stands for “electrical management system,” while surge protectors are a more generic term. An EMS provides protection against electrical overloads, as well as providing a clean power source to all your devices. This can save you money on batteries for your equipment, and also ensure that you’re not risking any damage to your RV or its electrical system.

If you’re an RV owner looking for peace of mind when it comes to your electrical system, then this is the perfect solution for you.

This article will give a brief overview of what this type of system does and why it’s important to own one.

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What does an RV EMS do?

An RV EMS is a type of surge protector. Any RV owner knows how important it is to have quality equipment for their expensive devices and appliances. Surge protectors prevent power surges and other electrical problems from damaging your expensive appliances and devices while you’re out on the open road. But what does an RV EMS do?

An RV’s electrical system can’t handle the amount of power being drawn by high-voltage appliances like air conditioners, heaters, and microwaves. The appliance will run fine for a while but as you turn it on again, more current is pulled from your battery until the voltage drops below 12.75 volts, which will shut off the appliance and stop it from working. This is when you need an RV EMS to step in and save your expensive appliances from a power outage.

The other problem with RV’s electrical system is that they can’t handle surges or spikes of electromagnetic energy because the current-carrying wires are too thin for them to withstand the high voltage. This will damage the RV’s electrical system which can cause fires, electric shocks, and even death.

An RV EMS protects your valuable electronics from these problems by providing a direct connection to your battery that is protected on both sides with gas-filled tubes called chokes. The choke filters surge or spikes of electromagnetic energy while protecting the connections.

An RV EMS is an essential piece of equipment that needs to be part of any RV owner’s arsenal. It will prevent power surges and other electrical problems from damaging your expensive appliances and devices while you’re out on the open road.

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Why do I need EMS on my RV?

RVs, like all electrical devices, can suffer from power surges. These small bursts of high energy can burn out or fry the entirety of the device’s wiring. Whether you have a sudden blackout or a simple blown fuse that needs fixing, this surge protector will keep your electronics safe from harm and get you back on the road in no time.

A surge protector helps protect your recreational vehicle from a blast of electricity and other related disasters.

It pays for itself after just two uses if it saves your equipment when there is an electrical-related disaster caused by power spikes.

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Types of EMS Systems Available

There are a variety of different types of surge protectors, all with their own unique advantages and features. Whole-house surge protectors can be installed in the breaker box to provide protection for an entire home’s worth of electrical circuits from any surges that may occur outside your property lines or even when you plug something into one outlet but not another.

Surge protector strips will always give at least some level of power during electricity outages while wall-mounts usually only offer basic circuit breakers without direct connection to the outlets themselves.

Some have battery backup systems, giving users peace of mind knowing that they’ll still have access to electric current whenever needed.

There are 4 main types of hardware, namely:

  1. Active Grounding and Isolation.
  2. Passive Grounding and Isolation.
  3. Standby Power Systems (SPS).
  4. Back-Ups for Critical Equipment.

01. Active Grounding and Isolation

Active grounding is the most common type of protection for electronic equipment. The idea is that even if the power fails, your computer will be safe because it has a surge protector to protect its components from voltage spikes (a sudden increase in electric potential).

This system usually includes an active ground loop and isolation transformer with high voltage input capability. This ensures that all downstream devices are grounded to the earth (ground) and isolated from any power surges.

02. Passive Grounding and Isolation

Passive grounding is the process of installing an earth-ground conductor to all metal structures and connecting it to a grounded utility electrode.

A passive system will help protect against indirect lightning strikes that can compromise sensitive devices through power surges propagating on telephone wires, or by faults in electric utilities such as transformer explosions.

It provides protection for any device without an active ground loop, such as HVAC control systems and other sensitive devices.

Passive grounding can also be used in conjunction with a standby generator system to protect against power surges from events that are not natural disasters or man-made accidents.

This is the most affordable option for protecting equipment on-site without having to rely on utility company power.

03. Standby Power Systems (SPS)

Standby power systems are a form of UPS that provide backup to critical components in the event of an outage. This will prevent any downtime from occurring and minimize lost productivity.

This is often used with servers, which require reliable data transfer at all times or can be shut down otherwise for maintenance purposes only (such as installing software updates).

Standby power systems are usually battery-based and can provide protection from short outages up to hours of time.

Some equipment, such as servers or data centers that require 24/365 uptime, may not be able to rely on standby power for only a limited amount of time unless it is in conjunction with some active grounding system.

04. Back-Ups for Critical Equipment

A backup is a power system that will automatically start when the main supply fails. It can provide emergency lighting and protection from larger scale outages up to hours of time in some cases, but it’s best used for standby purposes rather than as a primary power source.

It’s important to note that any type of surge protector should be installed by a licensed electrician to avoid damage or fire.

In conclusion, when purchasing an EMS (surge protector) system it’s important to know what your needs are before you choose one.

Active grounding is the most common and necessary type for computer equipment while passive grounding can be used in conjunction with a backup generator or standby power system.

Know which protection best suits your specific situation and budget before you make your decision.

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What are the benefits of having an EMS system in your RV?

The benefits of having an EMS system in your RV are:

  • The benefits of having an EMS installed on your vehicle are great you’ll know how much power you have left, and if anything goes wrong with your RV’s electrical system, the EMS will be able to help.
  • Monitors battery levels remotely and gets notifications when they’re running low or fully charged
  • You’ll be able to monitor power usage so you never have to guess whether or not you’ll have enough juice for all the appliances you want to use.
  • If something goes wrong with your RV’s electrical system, such as a power outage, the EMS will still allow for some systems in your RV to work during this temporary event.
  • The decision is big because it could take up space and cost money but there are several advantages including monitoring battery levels more easily and getting notifications if they’re running low.


If you’ve been considering adding an EMS system to your RV, we hope this post has helped you make that decision. After all, it can be a life-saving addition to any vehicle, and having one on your RV is especially important for the safety of yourself as well as those around you! We also hope this article was helpful in answering some questions about what an EMS does exactly, how they work, and why it might be beneficial to have one installed in your RV.

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