Use these simple circuit breakers to replace large fuses when installing new circuits in our RV. No backups to buy and stock up on. They use a colored lever to indicate when they have been triggered, so all you have to do is fix the problem and move the lever back to the "on" position. It's easy to tell which ones worked just by looking! No disadvantages. The terminals on the largest of them take wire the size of a battery cable and screw it into place. The jackhammer is not waterproof, but it is waterproof so it does not need to be mounted in a waterproof case unless exposed to spray from wheels and other water sources.
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