15 amp RV plugged into 30 amps

[cavie]

Originally Posted by Old-Biscuit

Surge 'guard'.......high voltage spikes
Surge 'protector'......EMS


Nomenclature can be descriptive/specific OR generic


Surge Protector is commonly used to mean a device that not only protects from Voltage Surges but also test voltage source, test ground/neutral, reverse polarity and trip on hi/lo voltage

"Surge Guard" is a company product name. "Surge Protector" is a many years old name (50 years of my personal knowledge and use) for an electric device designed to clamp down high voltage spikes. A Surge Protector is a sacrificial device designed to destroy itself while stopping the high voltage from entering your service equipment. Use once and done.

The ""Surge Guard" name appears on surge protectors and EMS units. Be sure of which you are buying.

[cavie]

Surge Protector Definition

The terms surge protection device (SPD) and transient voltage surge suppressor (TVSS) are used to describe electrical devices typically installed in power distribution panels, communications systems, and other heavy-duty industrial systems, for the purpose of protecting against electrical surges and spikes, including those caused by Lightnjing. Scaled-down versions of these devices are sometimes installed in residential service entrance electrical panels, to protect equipment in a household and RV's from similar hazards.[2]

Short version. It protects from large spikes only. NOT low voltage. Some are made to show Voltage, Proper wire connections, check for proper grounding. Check for proper neutral and Ground connections. But that is all they do is show. They protect from High Voltage spikes only.

An “Electrical Management System”, EMS, will conleg voltage, current and frequency, and any error condition.>

High voltage protection.* The EMS will disconnect park power from the RV if the line voltage goes over 132 volts.* High voltage can burn out electronic devices.

Low voltage protection.* The EMS will disconnect park power from the RV if the line voltage drops below 104 volts.* Low voltage can burn out motor devices like your air conditioner compressors.* Electrical devices really consume power (watts), the product of voltage (volts) and current (amps).* If the voltage goes down, then the current used will rise to maintain the same power.* This extra current draw is what burns out devices.

Surge protection. The EMS will protect your RV and devices from voltage spikes.* Spikes generally occur from lightening; but there are other sources of spikes.

Wiring error protection.* If the EMS senses that the park wiring is reversed, it will not turn on park power to your RV.

Open neutral protection.* If the EMS does not find Neutral continuity, it will not turn on park power to your RV.

Open Ground protection.* If the EMS does not find Ground continuity, it will not turn on park power to your RV.

AC frequency protection.* If the AC frequency drops below 51 Hz or goes over 69 Hz (60 Hz +/- 9Hz), the EMS will disconnect your RV from park power.* AC frequency errors can harm motors.

Be sure you know wich one you are buying.

https://www.progressiveindustries.net/our-products
Has 4 Surge Protectors a 2 EMS

[NRR]

RV Vagabond (OP)

You are and older member. Please respond to the good suggestions.

[RV Vagabond]

Originally Posted by NRR

RV Vagabond (OP)

You are and older member. Please respond to the good suggestions.

I think the general concensus is that it is up to me to make sure I do not attempt to use more than 20 amps at one time and that a surge protector will not automatically prevent more than 20 amps from coming through.

[A32Deuce]

You can't use more then 20 amps. If you did, your units main breaker would trip!