That means you will need a 1 AWG wire for 100 amps since it has 130A ampacity. How to calculate What Gauge Wire is Best for Speakers There is no definitive answer to this question as the best gauge of wire for speakers depends on a number of factors, including the power output of your amplifier, the length of the wire run, and the impedance of your speakers. Example: For 100 amp service, you will a wire with at least 125A ampacity. However, for longer speaker wire runs (to another room, for example), it is better to use a thicker, lower-gauge wire. This DC wire size calculator will help you calculate the wire gauge automatically. Generally, for short speaker wire runs, a 16-gauge wire is sufficient. When determining which wire gauge to use, consider how far away the speakers are from your amplifier or A/V receiver. Speaker wires with lower-gauge numbers are better at carrying an amplified audio signal. Speaker Wire Gauge The thickness of the wire is represented by its gauge or referring to the American Wire Ga uge (AWG). A lower-gauge number indicates a thicker wire, while a higher-gauge number indicates a thinner wire. Speaker wires that are anywhere between 12 to 16 gauge are most commonly used for connecting speakers to an amplifier or an Audio/Video (A/V) receiver. In these cases, using separately purchased speaker wire is not possible, we recommend contacting the Sony parts and accessories department for assistance in ordering speaker wire with the correct plug-in connection for your home theater system. The best connector is bare wire - strip the plastic, twist, stick it in and lock it down. Its all about distance which determines speaker wire gauge. Heck, you can even help your friends out next time. Speaker wire has nothing to do with how many watts your amp puts out, or how much your speaker is rated for. With a little help, you can end up with a pretty formidable understanding of the entire concept. Determining how many smaller wires are required to replace a single larger wire. Februby Motorist Care Choosing the right wire gauge for your car’s audio speaker might be a daunting task. IMPORTANT: Some home theater surround sound systems use non-standard plug-in connections. For example, to see the effective gauge of a cable made from x10 20-gauge wires, select 20 gauge from the drop list, then type 10 into the number of wires field and press the Tab the combination is equivalent to a single 10 AWG gauge. This wire gauge calculator computes the diameter, cross-sectional area, and resistance per unit length of a wire once given a wire gauge number in either.
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