Using a 30 Amp RV Surge Protector with 50 Amp Service

Updated 03/19/2026 | Published 02/15/2022

Products Featured in This Question

Power Watchdog Surge Protector with Bluetooth - Portable - 30 Amp

(741)

$139.99

Mighty Cord RV Power Cord Adapter - 30 Amp Female to 50 Amp Male - 12" Long

(1353)

$31.54

Question:

What do i do when in a 50 amp only available camping spot but my travel trailer is only 30 amp and I want to use my surge protector?

asked by: Jonas G

Helpful Expert Reply:

You will always use a surge protector matched to the TT's rating of 30 amps. I recommend the Power Watchdog the 30 amp Surge Protector with Bluetooth # HU97FR. You can use the free smartphone app to monitor your system and get notified if low or high voltage is detected. If you aren't using a surge protector, you're taking a big risk. While spikes caused by lightning can damage your electrical system and appliances, there are common electrical issues that can be just as dangerous.

If you are at a 50 amp service only site, you will need plug your RV's power cord into the surge protector and then plug the surge protector into a 30 amp to 50 amp adapter cord like the Mighty Cord RV Power Cord Adapter # A10-5030FHVP.

expert reply by: Michael R

Dee

5/21/2025

I have a 50 amp camper plugged into a 30 amp site with an adapter. What surge protecter should I purchase.

Jameson C.

5/21/2025

@Dee You'd want to go with 30 amp to protect the electronics of your RV. The surge protector is designed to protect your RV's electronics so capping the amp draw to the rating of the RV is what you'd want to do. The part # HU97FR is the 30 amp protector.

Carlos

3/19/2026

@JamesonC I currently have a 30 amp RV with a 30 amp watchdog search protector could I use the same search protector (30 amp) on my 50 amp RV? And if so, how would I need to connect it?