The switch is rated for 20 amps. So, the 10 amp fuse will protect the circuit from overload.

## How many amps does a 120 watt LED light bar draw?

watts divided by voltage = amps. IE 120 watts divided by 12 volts = 10 amps. you can use this as a good reference for switching and if you need a relay.

## How many amps does a LED light bar use?

55W LED lights are usually in 4-5 amp range. You can also use a high current meter.

## How do you calculate what size fuse you need?

Formula to Calculate the Fuse Rating

V for voltage in volt); I for current in Amps. The fuse rating can be calculated by dividing the power used by the appliance by the voltage going into the appliance. I (Amps) = P (Watts) ÷ V (Voltage).

## Do I need an inline fuse for LED lights?

These LED lights draw less amps than your standard incandescent lights. You should not need a circuit breaker of in line fuse. … However, you can install an inline fuse if you feel that you need one. The 12-Gauge Mini Fuse Holder, # SWC9545, will can wire inline on the power wire from that battery.

## What is a good wattage for a LED light bar?

Lumens vs Watts, which is more important?

Lighting Type | Watts | Efficiency |
---|---|---|

Incandescent Bulb | 60 | Poor |

CFL | 14 | Good |

6″ LED bar | 36 | Excellent |

## What size fuse do I need for LED light bar?

A 10 amp fuse will protect the circuit. The 16 gauge wire will handle 10 amps in the length of wire that you will be using. The switch is rated for 20 amps. So, the 10 amp fuse will protect the circuit from overload.

## Do LED lights draw less amps?

You’ll find out why LED lights draw less from your battery while providing the same amount – or even more — light than the old incandescent ones. … When Dave connects incandescent bulbs to an amp meter, they draw up to 1.6 amps, but when LED lights are used, they only pull about . 26 amps.

## What gauge wire should I use for LED lights?

Most people would likely recommend using a solid core 18-gauge wire for your LED lights. The cost difference between this wire size and a much smaller cable is negligible, and 18-gauge is about as big as you can go if you would like your wires to fit into most holders or terminals.

## Do I need Relay for LED light bar?

A relay is an electrical switch that lets a low current circuit control a high current circuit such as a large LED light bar. … If you are using a light pod that does not have a very large amp draw, you may not need a relay switch, but if you are using a larger LED light bar, they are a must have.

## How do you size a 12v fuse?

Easy Way

- Find the continuous amperage of the device you are trying to power and multiply that number by 1.5, then round up to the nearest fuse size you can find.
- Cross check that fuse size with the maximum fuse size chart below and verify that your fuse size is below the maximum fuse size listed in the chart.

## Can I use a 30 amp fuse instead of 20?

You might put the 30 Amp fuse instead and nothing bad happens. … What can happen if I put a 30-amp fuse replacement for a 20-amp fuse? since the wiring in the circuit was probably sized to the 20 amp fuse you would probably overload the circuit and cause a fire that would burn down the house and kill you as you slept.

## How many watts can a 5 amp fuse take?

Fuse ratings

45 AMP | For circuits of more than 13kw (13000 w) |
---|---|

13 AMP | For appliances between 700 and 3000w (3kw) |

5 AMP | For lighting circuits. The maximum permissible load of a lighting circuit is 1200w or 12* 100 watt lamps |

3 AMP | For appliances up to 700 watts, such as table lamps and alarm clocks |

## How do I know what amp fuse to use?

You’ll usually find the fuse rating on the side of your fuse, which will be given in amps. Fuse rating is the amount of current needed for the fuse to blow or break. When this happens, it stops the electrical power from flowing through the electrical circuit.

## How many volts can a 10 amp fuse handle?

Volts = Watts / Amps

2400 Watts / 20 Amps = 120 Volts. 2400 Watts / 10 Amps = 240 Volts.

## What size fuse should I use for a 1000 watt amp?

most true 1000 wrms amps call for 80a fusing…..but yours may require less..or more, google for the manual and find out.