Is a permanent power outlet necessary?

For lighting, lawn tools used on a regular basis, or power needs for outbuildings, you need a permanent power solution for safety. This can involve an outdoor outlet addition to your home's main structure, or wiring run remotely to an outbuilding.

What if my power supply is 50% efficient?

If we assume, conservatively, that your power supply is 50% efficient, you'd still only be drawing 100W at the input side, not 300. Also of note is the fact that if your power supply were outputting a whole 300 watts, the input would be even more than 300W.

Do I need a GFCI outlet if I run power outside?

When running power outside, a GFCI-equipped outlet is required by code in all areas exposed to moisture, such as the outdoors, and ensures safety. When adding an outdoor outlet, be sure to choose an outdoor-rated, weatherproof model with built-in, high-sensitivity GFCI.

Is a permanent power solution necessary?

For lighting, lawn tools used regularly, or power needs in outbuildings, a permanent power solution is necessary for safety. This can involve adding an outdoor outlet to your home's main structure or running wiring remotely to an outbuilding. For power lines not connected to your house, cable must be wired to a separate GFCI indoors.

What does the 300 watt rating on a power supply mean?

The 300 watt rating on the power supply just means that that's what it can output, not that it always outputs that. If you attached 5 more light bulbs, all in parallel, then it would produce the whole 300 watts. The only trick is that we have checked how much power the power supply is outputting.

How do I choose an outdoor outlet?

When choosing an outdoor outlet, be sure to select an outdoor-rated and weatherproof model with built-in, high-sensitivity GFCI\. All exterior outlets should have spring-loaded covers to protect them from weather, pests, and most importantly, moisture.